82V2048DA

OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT IDT82V2048 FEATURES         Fully integrated octal T1/E1 short haul line interface which supports 100  T1 twisted pair, 120  E1 twisted pair and 75  E1 coaxial applications Selectable Single Rail mode or Dual Rail mode and AMI or B8ZS/HDB3 encoder/decoder Built-in transmit pre-equalization meets G.703 & T1.102 Selectable transmit/receive jitter attenuator meets ETSI CTR12/ 13, ITU G.736, G.742, G.823 and AT&T Pub 62411 specifications SONET/SDH optimized jitter attenuator meets ITU G.783 mapping jitter specification Digital/Analog LOS detector meets ITU G.775, ETS 300 233 and T1.231 ITU G.772 non-intrusive monitoring for in-service testing for any one of channel 1 to channel 7         Low impedance transmit drivers with high-Z Selectable hardware and parallel/serial host interface Local, Remote and Inband Loopback test functions Hitless Protection Switching (HPS) for 1 to 1 protection without relays JTAG boundary scan for board test 3.3 V supply with 5 V tolerant I/O Low power consumption Operating temperature range: -40°C to +85°C Available in 144-pin Thin Quad Flat Pack (TQFP) and 160-pin Plastic Ball Grid Array (PBGA) packages Green package options available FUNCTIONAL BLOCK DIAGRAM One of Eight Identical Channels LOS Detector RTIPn Slicer RRINGn Analog Loopback Peak Detector TTIPn CLK&Data Recovery (DPLL) Jitter Attenuator Jitter Attenuator Waveform Shaper B8ZS/ HDB3/AMI Decoder Remote Loopback Digital Loopback Line Driver TRINGn LOSn IBLC Detector AIS Detector B8ZS/ HDB3/AMI Encoder TCLKn TDn/TDPn BPVIn/TDNn IBLC Generator Transmit All Ones JTAG TAP VDDIO VDDT VDDD VDDA TRST TCK TMS TDI TDO Control Interface OE CLKE MODE[2:0] CS/JAS TS2/SCLK/ALE/AS TS1/RD/R/W TS0/SDI/WR/DS SDO/RDY/ACK INT LP[7:0]/D[7:0]/AD[7:0] MC[3:0]/A[4:0] Register File Clock Generator MCLK G.772 Monitor RCLKn RDn/RDPn CVn/RDNn Figure-1 Block Diagram November 14, 2012 IDT and the IDT logo are trademarks of Integrated Device Technology, Inc. 1  2010- Integrated Device Technology, Inc. DSC-6037/19 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES DESCRIPTION The IDT82V2048 offers hardware control mode and software control mode. Software control mode works with either serial host interface or parallel host interface. The latter works via an Intel/Motorola compatible 8-bit parallel interface for both multiplexed or non-multiplexed applications. Hardware control mode uses multiplexed pins to select different operation modes when the host interface is not available to the device. The IDT82V2048 is a single chip, 8-channel T1/E1 short haul PCM transceiver with a reference clock of 1.544 MHz (T1) or 2.048 MHz (E1). The IDT82V2048 contains 8 transmitters and 8 receivers. All the receivers and transmitters can be programmed to work either in Single Rail mode or Dual Rail mode. B8ZS/HDB3 or AMI encoder/ decoder is selectable in Single Rail mode. Pre-encoded transmit data in NRZ format can be accepted when the device is configured in Dual Rail mode. The receivers perform clock and data recovery by using integrated digital phase-locked loop. As an option, the raw sliced data (no retiming) can be output on the receive data pins. Transmit equalization is implemented with low-impedance output drivers that provide shaped waveforms to the transformer, guaranteeing template conformance. The IDT82V2048 also provides loopback and JTAG boundary scan testing functions. Using the integrated monitoring function, the IDT82V2048 can be configured as a 7-channel transceiver with nonintrusive protected monitoring points. The IDT82V2048 can be used for SDH/SONET multiplexers, central office or PBX, digital access cross connects, digital radio base stations, remote wireless modules and microwave transmission systems. A jitter attenuator is integrated in the IDT82V2048 and can be switched into either the transmit path or the receive path for all channels. The jitter attenuation performance meets ETSI CTR12/13, ITU G.736, G.742, G.823, and AT&T Pub 62411 specifications. IDT82V2048 (Top View) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 TD7/TDP7 TCLK7 LOS6 CV6/RDN6 RD6/RDP6 RCLK6 BPVI6/TDN6 TD6/TDP6 TCLK6 MCLK MODE2 A4 MC3/A3 MC2/A2 MC1/A1 MC0/A0 VDDIO GNDIO VDDD GNDD LP0/D0/AD0 LP1/D1/AD1 LP2/D2/AD2 LP3/D3/AD3 LP4/D4/AD4 LP5/D5/AD5 LP6/D6/AD6 LP7/D7/AD7 TCLK1 TD1/TDP1 BPVI1/TDN1 RCLK1 RD1/RDP1 CV1/RDN1 LOS1 TCLK0 BPVI4/TDN4 RCLK4 RD4/RDP4 CV4/RDN4 LOS4 OE CLKE VDDT4 TTIP4 TRING4 GNDT4 RTIP4 RRING4 GNDT5 TRING5 TTIP5 VDDT5 RRING5 RTIP5 VDDT6 TTIP6 TRING6 GNDT6 RTIP6 RRING6 GNDT7 TRING7 TTIP7 VDDT7 RRING7 RTIP7 LOS7 CV7/RDN7 RD7/RDP7 RCLK7 BPVI7/TDN7 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 TD4/TDP4 TCLK4 LOS5 CV5/RDN5 RD5/RDP5 RCLK5 BPVI5/TDN5 TD5/TDP5 TCLK5 TDI TDO TCK TMS TRST IC IC VDDIO GNDIO VDDA GNDA MODE0/CODE CS/JAS TS2/SCLK/ALE/AS TS1/RD/R/W TS0/SDI/WR/DS SDO/RDY/ACK INT TCLK2 TD2/TDP2 BPVI2/TDN2 RCLK2 RD2/RDP2 CV2/RDN2 LOS2 TCLK3 TD3/TDP3 PIN CONFIGURATIONS Figure-2 TQFP144 Package Pin Assignment 2 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 BPVI3/TDN3 RCLK3 RD3/RDP3 CV3/RDN3 LOS3 RTIP3 RRING3 VDDT3 TTIP3 TRING3 GNDT3 RRING2 RTIP2 GNDT2 TRING2 TTIP2 VDDT2 RTIP1 RRING1 VDDT1 TTIP1 TRING1 GNDT1 RRING0 RTIP0 GNDT0 TRING0 TTIP0 VDDT0 MODE1 LOS0 CV0/RDN0 RD0/RDP0 RCLK0 BPVI0/TDN0 TD0/TDP0 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT D E F G INDUSTRIAL TEMPERATURE RANGES A B C H J K L M N P 1 RCLK 7 TCLK 7 RCLK 6 TCLK MCLK 6 MC 1 LP 6 LP 7 TCLK 1 RCLK 1 TCLK 0 RCLK 0 1 2 RDP 7 TDP 7 RDP 6 TDP 6 MODE 2 MC 2 LP 0 LP 2 LP 5 MODE 1 TDP 1 RDP 1 TDP 0 RDP 0 2 3 RDN 7 TDN 7 RDN 6 TDN 6 LOS 6 MC 3 MC 0 LP 1 LP 4 LOS 1 TDN 1 RDN 1 TDN 0 RDN 0 3 4 VDDT 7 VDDT 7 VDDT 6 VDDT 6 LOS 7 A4 LP 3 LOS 0 VDDT 1 VDDT 1 VDDT 0 VDDT 0 4 5 TRING 7 TTIP 7 TRING 6 TTIP 6 TTIP 1 TRING 1 TTIP 0 TRING 0 5 6 GNDT GNDT GNDT GNDT 7 7 6 6 GNDT GNDT GNDT GNDT 1 1 0 0 6 7 RTIP 7 RRING 7 RTIP 6 RRING 6 RRING 1 RTIP 1 RRING 0 RTIP 0 7 8 RTIP 4 RRING 4 RTIP 5 RRING 5 RRING 2 RTIP 2 RRING 3 RTIP 3 8 9 GNDT GNDT GNDT GNDT 4 4 5 5 GNDT GNDT GNDT GNDT 2 2 3 3 9 10 TRING 4 TTIP 4 TRING 5 TTIP 5 TTIP 2 TRING 2 TTIP 3 TRING 3 10 11 VDDT 4 VDDT 4 VDDT 5 VDDT 5 LOS 4 TMS GNDIO GNDA CS LOS 3 VDDT 2 VDDT 2 VDDT 3 VDDT 3 11 12 RDN 4 TDN 4 RDN 5 TDN 5 LOS 5 TDI TRST MODE 0 TS 2 LOS 2 TDN 2 RDN 2 TDN 3 RDN 3 12 13 RDP 4 TDP 4 RDP 5 TDP 5 CLKE TDO IC IC TS 1 INT TDP 2 RDP 2 TDP 3 RDP 3 13 14 RCLK 4 TCLK 4 RCLK 5 TCLK 5 OE TCK TS 0 SDO TCLK 2 RCLK 2 TCLK 3 RCLK 3 14 A B C D E F J K L M N P VDDIO VDDD GNDIO GNDD IDT82V2048 (Bottom View) VDDIO VDDA G H Figure-3 PBGA160 Package Pin Assignment 3 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT 1 INDUSTRIAL TEMPERATURE RANGES PIN DESCRIPTION Table-1 Pin Description Name Type Pin No. TQFP144 Description PBGA160 Transmit and Receive Line Interface TTIP0 TTIP1 TTIP2 TTIP3 TTIP4 TTIP5 TTIP6 TTIP7 TRING0 TRING1 TRING2 TRING3 TRING4 TRING5 TRING6 TRING7 RTIP0 RTIP1 RTIP2 RTIP3 RTIP4 RTIP5 RTIP6 RTIP7 RRING0 RRING1 RRING2 RRING3 RRING4 RRING5 RRING6 RRING7 Analog Output Analog Input 45 52 57 64 117 124 129 136 N5 L5 L10 N10 B10 D10 D5 B5 46 51 58 63 118 123 130 135 P5 M5 M10 P10 A10 C10 C5 A5 48 55 60 67 120 127 132 139 P7 M7 M8 P8 A8 C8 C7 A7 49 54 61 66 121 126 133 138 N7 L7 L8 N8 B8 D8 D7 B7 TTIPn/TRINGn: Transmit Bipolar Tip/Ring for Channel 0~7 These pins are the differential line driver outputs. They will be in high-Z if pin OE is low or the corresponding pin TCLKn is low (pin OE is global control, while pin TCLKn is per-channel control). In host mode, each pin can be in high-Z by programming a ‘1’ to the corresponding bit in register OE(1). RTIPn/RRINGn: Receive Bipolar Tip/Ring for Channel 0~7 These pins are the differential line receiver inputs. 1. Register name is indicated by bold capital letter. For example, OE indicates Output Enable Register. 4 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES Table-1 Pin Description (Continued) Name Type Pin No. TQFP144 Description PBGA160 Transmit and Receive Digital Data Interface TD0/TDP0 TD1/TDP1 TD2/TDP2 TD3/TDP3 TD4/TDP4 TD5/TDP5 TD6/TDP6 TD7/TDP7 37 30 80 73 108 101 8 1 N2 L2 L13 N13 B13 D13 D2 B2 38 31 79 72 109 102 7 144 N3 L3 L12 N12 B12 D12 D3 B3 I BPVI0/TDN0 BPVI1/TDN1 BPVI2/TDN2 BPVI3/TDN3 BPVI4/TDN4 BPVI5/TDN5 BPVI6/TDN6 BPVI7/TDN7 TDn: Transmit Data for Channel 0~7 When the device is in Single Rail mode, the NRZ data to be transmitted is input on this pin. Data on TDn is sampled into the device on the falling edges of TCLKn, and encoded by AMI or B8ZS/HDB3 line code rules before being transmitted to the line. BPVIn: Bipolar Violation Insertion for Channel 0~7 Bipolar violation insertion is available in Single Rail mode 2 (see Table-2 on page 13 and Table-3 on page 14) with AMI enabled. A low-to-high transition on this pin will make the next logic one to be transmitted on TDn the same polarity as the previous pulse, and violate the AMI rule. This is for testing. TDPn/TDNn: Positive/Negative Transmit Data for Channel 0~7 When the device is in Dual Rail Mode, the NRZ data to be transmitted for positive/negative pulse is input on this pin. Data on TDPn/TDNn are sampled on the falling edges of TCLKn. The line code in dual rail mode is as the follow: TDPn 0 0 1 1 TDNn 0 1 0 1 Output Pulse Space Negative Pulse Positive Pulse Space Pulling pin TDNn high for more than 16 consecutive TCLK clock cycles will configure the corresponding channel into Single Rail mode 1 (see Table-2 on page 13 and Table-3 on page 14). TCLK0 TCLK1 TCLK2 TCLK3 TCLK4 TCLK5 TCLK6 TCLK7 I 36 29 81 74 107 100 9 2 N1 L1 L14 N14 B14 D14 D1 B1 TCLKn: Transmit Clock for Channel 0~7 The clock of 1.544 MHz (for T1 mode) or 2.048 MHz (for E1 mode) for transmit is input on this pin. The transmit data at TDn/TDPn or TDNn is sampled into the device on the falling edges of TCLKn. Pulling TCLKn high for more than 16 MCLK cycles, the corresponding transmitter is set in Transmit All Ones (TAOS) state (when MCLK is clocked). In TAOS state, the TAOS generator adopts MCLK as the clock reference. If TCLKn is low, the corresponding transmit channel is set into power down state, while driver output ports become high-Z. Different combinations of TCLKn and MCLK result in different transmit mode. It is summarized as the follows: MCLK Clocked Clocked Clocked High/Low High/Low TCLKn Clocked Transmit Mode Normal operation Transmit All Ones (TAOS) signals to the line side in the corresponding High ( 16 MCLK) transmit channel. Low ( 64 MCLK) The corresponding transmit channel is set into power down state. TCLKn is clocked Normal operation Transmit All Ones (TAOS) signals to the line side TCLKn is high in the corresponding transmit channel. ( 16 TCLK1) Corresponding transmit channel is set into power TCLKn is low TCLK1 is clocked down state. ( 64 TCLK1) The receive path is not affected by the status of TCLK1. When MCLK is high, all receive paths just slice the incoming data stream. When MCLK is low, all the receive paths are powered down. TCLK1 is unavailAll eight transmitters (TTIPn & TRINGn) will be in high-Z. able. 5 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES Table-1 Pin Description (Continued) Name RD0/RDP0 RD1/RDP1 RD2/RDP2 RD3/RDP3 RD4/RDP4 RD5/RDP5 RD6/RDP6 RD7/RDP7 CV0/RDN0 CV1/RDN1 CV2/RDN2 CV3/RDN3 CV4/RDN4 CV5/RDN5 CV6/RDN6 CV7/RDN7 RCLK0 RCLK1 RCLK2 RCLK3 RCLK4 RCLK5 RCLK6 RCLK7 MCLK LOS0 LOS1 LOS2 LOS3 LOS4 LOS5 LOS6 LOS7 Type O High-Z O High-Z Pin No. TQFP144 Description PBGA160 RDn: Receive Data for Channel 0~7 In Single Rail mode, the received NRZ data is output on this pin. The data is decoded by AMI or B8ZS/ HDB3 line code rule. 40 33 77 70 111 104 5 142 P2 M2 M13 P13 A13 C13 C2 A2 41 34 76 69 112 105 4 141 P3 M3 M12 P12 A12 C12 C3 A3 39 32 78 71 110 103 6 143 P1 M1 M14 P14 A14 C14 C1 A1 RCLKn: Receive Clock for Channel 0~7 In clock recovery mode, this pin outputs the recovered clock from signal received on RTIPn/RRINGn. The received data are clocked out of the device on the rising edges of RCLKn if pin CLKE is high, or on falling edges of RCLKn if pin CLKE is low. In data recovery mode, RCLKn is the output of an internal exclusive OR (XOR) which is connected with RDPn and RDNn. The clock is recovered from the signal on RCLKn. If Receiver n is powered down, the corresponding RCLKn is in high-Z. MCLK: Master Clock This is an independent, free running reference clock. A clock of 1.544 MHz (for T1 mode) or 2.048 MHz (for E1 mode) is supplied to this pin as the clock reference of the device for normal operation. In receive path, when MCLK is high, the device slices the incoming bipolar line signal into RZ pulse (Data Recovery mode). When MCLK is low, all the receivers are powered down, and the output pins RCLKn, RDPn and RDNn are switched to high-Z. In transmit path, the operation mode is decided by the combination of MCLK and TCLKn (see TCLKn pin description for details). NOTE: Wait state generation via RDY/ACK is not available if MCLK is not provided. I 10 E1 O 42 35 75 68 113 106 3 140 K4 K3 K12 K11 E11 E12 E3 E4 CVn: Code Violation for Channel 0~7 In Single Rail mode, the bipolar violation, code violation and excessive zeros will be reported by driving pin CVn high for a full clock cycle. However, only bipolar violation is indicated when AMI decoder is selected. RDPn/RDNn: Positive/Negative Receive Data for Channel 0~7 In Dual Rail Mode with clock recovery, these pins output the NRZ data. A high signal on RDPn indicates the receipt of a positive pulse on RTIPn/RRINGn while a high signal on RDNn indicates the receipt of a negative pulse on RTIPn/RRINGn. The output data at RDn or RDPn/RDNn are clocked out on the falling edges of RCLK when the CLKE input is low, or are clocked out on the rising edges of RCLK when CLKE is high. In Dual Rail Mode without clock recovery, these pins output the raw RZ sliced data. In this data recovery mode, the active polarity of RDPn/RDNn is determined by pin CLKE. When pin CLKE is low, RDPn/RDNn is active low. When pin CLKE is high, RDPn/RDNn is active high. In hardware mode, RDn or RDPn/RDNn will remain active during LOS. In host mode, these pins will either remain active or insert alarm indication signal (AIS) into the receive path, determined by bit AISE in register GCF. RDn or RDPn/RDNn is set into high-Z when the corresponding receiver is powered down. LOSn: Loss of Signal Output for Channel 0~7 A high level on this pin indicates the loss of signal when there is no transition over a specified period of time or no enough ones density in the received signal. The transition will return to low automatically when there is enough transitions over a specified period of time with a certain ones density in the received signal. The LOS assertion and desertion criteria are described in 2.4.4 Loss of Signal (LOS) Detection. 6 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES Table-1 Pin Description (Continued) Name Type Pin No. TQFP144 Description PBGA160 Hardware/Host Control Interface MODE2: Control Mode Select 2 The signal on this pin determines which control mode is selected to control the device: MODE2 Low VDDIO/2 High I MODE2 (Pulled to VDDIO/2) 11 E2 Control Interface Hardware Mode Serial Host Interface Parallel Host Interface Hardware control pins include MODE[2:0], TS[2:0], LP[7:0], CODE, CLKE, JAS and OE. Serial host Interface pins include CS, SCLK, SDI, SDO and INT. Parallel host Interface pins include CS, A[4:0], D[7:0], WR/DS, RD/R/W, ALE/AS, INT and RDY/ACK. The device supports multiple parallel host interface as follows (refer to MODE1 and MODE0 pin descriptions below for details): MODE[2:0] 100 101 110 111 MODE1 I 43 K2 Host Interface Non-multiplexed Motorola Mode Interface Non-multiplexed Intel Mode Interface Multiplexed Motorola Mode Interface Multiplexed Intel Mode Interface MODE1: Control Mode Select 1 In parallel host mode, the parallel interface operates with separate address bus and data bus when this pin is low, and operates with multiplexed address and data bus when this pin is high. In serial host mode or hardware mode, this pin should be grounded. MODE0: Control Mode Select 0 In parallel host mode, the parallel host interface is configured for Motorola compatible hosts when this pin is low, or for Intel compatible hosts when this pin is high. MODE0/CODE I 88 H12 CODE: Line Code Rule Select In hardware control mode, the B8ZS (for T1 mode)/HDB3 (for E1 mode) encoder/decoder is enabled when this pin is low, and AMI encoder/decoder is enabled when this pin is high. The selections affect all the channels. In serial host mode, this pin should be grounded. CS: Chip Select (Active Low) In host mode, this pin is asserted low by the host to enable host interface. A high to low transition must occur on this pin for each read/write operation and the level must not return to high until the operation is over. I CS/JAS (Pulled to VDDIO/2) 87 J11 JAS: Jitter Attenuator Select In hardware control mode, this pin globally determines the Jitter Attenuator position: JAS Low VDDIO/2 High Jitter Attenuator (JA) Configuration JA in transmit path JA not used JA in receive path 7 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES Table-1 Pin Description (Continued) Name Type Pin No. TQFP144 Description PBGA160 TS2: Template Select 2 In hardware control mode, the signal on this pin is the most significant bit for the transmit template select. Refer to 2.5.1 Waveform Shaper for details. TS2/SCLK/ ALE/AS I 86 J12 SCLK: Shift Clock In serial host mode, the signal on this pin is the shift clock for the serial interface. Data on pin SDO is clocked out on falling edges of SCLK if pin CLKE is high, or on rising edges of SCLK if pin CLKE is low. Data on pin SDI is always sampled on rising edges of SCLK. ALE: Address Latch Enable In parallel Intel multiplexed host mode, the address on AD[4:0] is sampled into the device on the falling edges of ALE (signals on AD[7:5] are ignored). In non-multiplexed host mode, ALE should be pulled high. AS: Address Strobe (Active Low) In parallel Motorola multiplexed host mode, the address on AD[4:0] is latched into the device on the falling edges of AS (signals on AD[7:5] are ignored). In non-multiplexed host mode, AS should be pulled high. TS1: Template Select 1 In hardware control mode, the signal on this pin is the second most significant bit for the transmit template select. Refer to 2.5.1 Waveform Shaper for details. TS1/RD/R/W I 85 J13 RD: Read Strobe (Active Low) In parallel Intel multiplexed or non-multiplexed host mode, this pin is active low for read operation. R/W: Read/Write Select In parallel Motorola multiplexed or non-multiplexed host mode, the pin is active low for write operation and high for read operation. TS0: Template Select 0 In hardware control mode, the signal on this pin is the least significant bit for the transmit template select. Refer to 2.5.1 Waveform Shaper for details. SDI: Serial Data Input In serial host mode, this pin input the data to the serial interface. Data on this pin is sampled on the rising edges of SCLK. TS0/SDI/WR/ DS I 84 J14 WR: Write Strobe (Active Low) In parallel Intel host mode, this pin is active low during write operation. The data on D[7:0] (in non-multiplexed mode) or AD[7:0] (in multiplexed mode) is sampled into the device on the rising edges of WR. DS: Data Strobe (Active Low) In parallel Motorola host mode, this pin is active low. During a write operation (R/W = 0), the data on D[7:0] (in non-multiplexed mode) or AD[7:0] (in multiplexed mode) is sampled into the device on the rising edges of DS. During a read operation (R/W = 1), the data is driven to D[7:0] (in non-multiplexed mode) or AD[7:0] (in multiplexed mode) by the device on the rising edges of DS. In parallel Motorola non-multiplexed host mode, the address information on the 5 bits of address bus A[4:0] are latched into the device on the falling edges of DS. 8 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES Table-1 Pin Description (Continued) Name Type Pin No. TQFP144 Description PBGA160 SDO: Serial Data Output In serial host mode, the data is output on this pin. In serial write operation, SDO is in high impedance for the first 8 SCLK clock cycles and driven low for the remaining 8 SCLK clock cycles. In serial read operation, SDO is in high-Z only when SDI is in address/command byte. Data on pin SDO is clocked out of the device on the falling edges of SCLK if pin CLKE is high, or on the rising edges of SCLK if pin CLKE is low. SDO/RDY/ACK O 83 K14 RDY: Ready Output In parallel Intel host mode, the high level of this pin reports to the host that bus cycle can be completed, while low reports the host must insert wait states. ACK: Acknowledge Output (Active Low) In parallel Motorola host mode, the low level of this pin indicates that valid information on the data bus is ready for a read operation or acknowledges the acceptance of the written data during a write operation. INT O Open Drain 82 K13 INT: Interrupt (Active Low) This is an open drain, active low interrupt output. Four sources may cause the interrupt . Refer to 2.19 Interrupt Handling for details. LPn: Loopback Select 7~0 In hardware control mode, pin LPn configures the corresponding channel in different loopback mode, as follows: LP7/D7/AD7 LP6/D6/AD6 LP5/D5/AD5 LP4/D4/AD4 LP3/D3/AD3 LP2/D2/AD2 LP1/D1/AD1 LP0/D0/AD0 I/O High-Z 28 27 26 25 24 23 22 21 K1 J1 J2 J3 J4 H2 H3 G2 LPn Low VDDIO/2 High Loopback Configuration Remote Loopback No loopback Analog Loopback Refer to 2.17 Loopback Mode for details. Dn: Data Bus 7~0 In non-multiplexed host mode, these pins are the bi-directional data bus. ADn: Address/Data Bus 7~0 In multiplexed host mode, these pins are the multiplexed bi-directional address/data bus. In serial host mode, these pins should be grounded. 9 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES Table-1 Pin Description (Continued) Name Type Pin No. TQFP144 Description PBGA160 MCn: Performance Monitor Configuration 3~0 In hardware control mode, A4 must be connected to GND. MC[3:0] are used to select one transmitter or receiver of channel 1 to 7 for non-intrusive monitoring. Channel 0 is used as the monitoring channel. If a transmitter is monitored, signals on the corresponding pins TTIPn and TRINGn are internally transmitted to RTIP0 and RRING0. If a receiver is monitored, signals on the corresponding pins RTIPn and RRINGn are internally transmitted to RTIP0 and RRING0. The monitored is then output to RDP0 and RDN0 pins. In host mode operation, the signals monitored by channel 0 can be routed to TTIP0/RING0 by activating the remote loopback in this channel. Refer to 2.20 G.772 Monitoring for more details. A4 MC3/A3 MC2/A2 MC1/A1 MC0/A0 I 12 13 14 15 16 F4 F3 F2 F1 G3 Performance Monitor Configuration determined by MC[3:0] is shown below. Note that if MC[2:0] = 000, the device is in normal operation of all the channels. MC[3:0] Monitoring Configuration 0000 Normal operation without monitoring 0001 Monitor Receiver 1 0010 Monitor Receiver 2 0011 Monitor Receiver 3 0100 Monitor Receiver 4 0101 Monitor Receiver 5 0110 Monitor Receiver 6 0111 Monitor Receiver 7 1000 Normal operation without monitoring 1001 Monitor Transmitter 1 1010 Monitor Transmitter 2 1011 Monitor Transmitter 3 1100 Monitor Transmitter 4 1101 Monitor Transmitter 5 1110 Monitor Transmitter 6 Monitor Transmitter 7 1111 An: Address Bus 4~0 When pin MODE1 is low, the parallel host interface operates with separate address and data bus. In this mode, the signal on this pin is the address bus of the host interface. OE CLKE I I 114 115 E14 OE: Output Driver Enable Pulling this pin low can drive all driver output into high-Z for redundancy application without external mechanical relays. In this condition, all other internal circuits remain active. E13 CLKE: Clock Edge Select The signal on this pin determines the active edge of RCLKn and SCLK in clock recovery mode, or determines the active level of RDPn and RDNn in the data recovery mode. See 2.3 Clock Edges on page 14 for details. JTAG Signals I TRST 95 G12 TRST: JTAG Test Port Reset (Active Low) This is the active low asynchronous reset to the JTAG Test Port. This pin has an internal pull-up resistor and it can be left open. 96 F11 TMS: JTAG Test Mode Select The signal on this pin controls the JTAG test performance and is clocked into the device on the rising edges of TCK. This pin has an internal pull-up resistor and it can be left open. F14 TCK: JTAG Test Clock This pin input the clock of the JTAG Test. The data on TDI and TMS are clocked into the device on the rising edges of TCK, while the data on TDO is clocked out of the device on the falling edges of TCK. This pin should be connected to GNDIO or VDDIO pin when unused. Pull-up I TMS Pull-up TCK I 97 10 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES Table-1 Pin Description (Continued) Name Type Pin No. TQFP144 98 F13 TDO: JTAG Test Data Output This pin output the serial data of the JTAG Test. The data on TDO is clocked out of the device on the falling edges of TCK. TDO is a high-Z output signal. It is active only when scanning of data is out. This pin should be left float when unused. 99 F12 TDI: JTAG Test Data Input This pin input the serial data of the JTAG Test. The data on TDI is clocked into the device on the rising edges of TCK. This pin has an internal pull-up resistor and it can be left open. O TDO High-Z I TDI Description PBGA160 Pull-up Power Supplies and Grounds VDDIO - 17 92 G1 G14 3.3 V I/O Power Supply GNDIO - 18 91 G4 G11 I/O GND - 44 53 56 65 116 125 128 137 N4, P4 L4, M4 L11, M11 N11, P11 A11, B11 C11, D11 C4, D4 A4, B4 GNDT0 GNDT1 GNDT2 GNDT3 GNDT4 GNDT5 GNDT6 GNDT7 - 47 50 59 62 119 122 131 134 N6, P6 L6, M6 L9, M9 N9, P9 A9, B9 C9, D9 C6, D6 A6, B6 VDDD VDDA - 19 90 H1 H14 3.3 V Digital/Analog Core Power Supply GNDD GNDA - 20 89 H4 H11 Digital/Analog Core GND VDDT0 VDDT1 VDDT2 VDDT3 VDDT4 VDDT5 VDDT6 VDDT7 3.3 V/5 V Power Supply for Transmitter Driver All VDDT pins must be connected to 3.3 V or all VDDT must be connected to 5 V. It is not allowed to leave any of the VDDT pins open (not-connected) even if the channel is not used. T1 is only 5V VDDT. Analog GND for Transmitter Driver Others IC O 93 94 G13 H13 IC: Internal Connection Internal use. Leave it float for normal operation. 11 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT 2 FUNCTIONAL DESCRIPTION 2.1 OVERVIEW The Dual Rail interface consists of TDPn1, TDNn, TCLKn, RDPn, RDNn and RCLKn. Data transmitted from TDPn and TDNn appears on TTIPn and TRINGn at the line interface; data received from the RTIPn and RRINGn at the line interface are transferred to RDPn and RDNn while the recovered clock extracting from the received data stream outputs on RCLKn. In Dual Rail operation, the clock/data recovery mode is selectable. Dual Rail interface with clock recovery shown in Figure-4 is a default configuration mode. Dual Rail interface with data recovery is shown in Figure-5. Pin RDPn and RDNn, are raw RZ slice outputs and internally connected to an EXOR which is fed to the RCLKn output for external clock recovery applications. The IDT82V2048 is a fully integrated octal short-haul line interface unit, which contains eight transmit and receive channels for use in either T1 or E1 applications. The receiver performs clock and data recovery. As an option, the raw sliced data (no retiming) can be output to the system. Transmit equalization is implemented with low-impedance output drivers that provide shaped waveforms to the transformer, guaranteeing template conformance. A selectable jitter attenuator may be placed in the receive path or the transmit path. Moreover, multiple testing functions, such as error detection, loopback and JTAG boundary scan are also provided. The device is optimized for flexible software control through a serial or parallel host mode interface. Hardware control is also available. Figure-1 on page 1 shows one of the eight identical channels operation. 2.2 In Single Rail mode, data transmitted from TDn appears on TTIPn and TRINGn at the line interface. Data received from the RTIPn and RRINGn at the line interface appears on RDn while the recovered clock extracting from the received data stream outputs on RCLKn. When the device is in single rail interface, the selectable AMI or B8ZS/HDB3 line encoder/decoder is available and any code violation in the received data will be indicated at the CVn pin. The Single Rail mode has 2 sub-modes: Single Rail Mode 1 and Single Rail Mode 2. Single Rail Mode 1, whose interface is composed of TDn, TCLKn, RDn, CVn and RCLKn, is realized by pulling pin TDNn high for more than 16 consecutive TCLK cycles. Single Rail Mode 2, whose interface is composed of TDn, TCLKn, RDn, CVn, RCLKn and BPVIn, is realized by setting bit CRS in register e-CRS2 and bit SING in register e-SING. The difference between them is that, in the latter mode bipolar violation can be inserted via pin BPVIn if AMI line code is selected. T1/E1 MODE SELECTION T1/E1 mode selection configures the device globally. In Hardware Mode, the template selection pins TS[2:0], determine whether the operation mode is T1 or E1 (see Table-9 on page 19). In Software Mode, the register TS determines whether the operation mode is T1 or E1. 2.2.1 SYSTEM INTERFACE The system interface of each channel can be configured to operate in different modes: 1. Single rail interface with clock recovery. 2. Dual rail interface with clock recovery. 3. Dual rail interface with data recovery (that is, with raw data slicing only and without clock recovery). The configuration of the Hardware Mode System Interface is summarized in Table-2. The configuration of the Host Mode System Interface is summarized in Table-3. 1. The footprint ‘n’ (n = 0 - 7) indicates one of the eight channels. Each signal pin on system side has multiple functions depending on which operation mode the device is in. 2. The first letter ‘e-’ indicates expanded register. LOS Detector RTIPn Slicer RRINGn INDUSTRIAL TEMPERATURE RANGES One of Eight Identical Channels LOSn CLK&Data Recovery (DPLL) Jitter Attenuator B8ZS/ HDB3/AMI Decoder RCLKn RDPn RDNn Waveform Shaper Jitter Attenuator B8ZS/ HDB3/AMI Encoder TCLKn TDPn TDNn Peak Detector TTIPn TRINGn Line Driver Transmit All Ones Note: The grey blocks are bypassed and the dotted blocks are selectable. Figure-4 Dual Rail Interface with Clock Recovery 12 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES One of Eight Identical Channels LOS Detector RTIPn Slicer RRINGn LOSn CLK&Data Recovery (DPLL) Jitter Attenuator B8ZS/ HDB3/AMI Decoder Waveform Shaper Jitter Attenuator B8ZS/ HDB3/AMI Encoder RCLKn (RDP RDN) RDPn RDNn Peak Detector TTIPn Line Driver TRINGn TCLKn TDPn TDNn Transmit All Ones Note: The grey blocks are bypassed and the dotted blocks are selectable. Figure-5 Dual Rail Interface with Data Recovery One of Eight Identical Channels LOS Detector RTIPn Slicer RRINGn LOSn CLK&Data Recovery (DPLL) Jitter Attenuator B8ZS/ HDB3/AMI Decoder Waveform Shaper Jitter Attenuator B8ZS/ HDB3/AMI Encoder RCLKn RDn CVn Peak Detector TTIPn TRINGn Line Driver TCLKn TDn BPVIn/TDNn Transmit All Ones Figure-6 Single Rail Mode Table-2 System Interface Configuration (In Hardware Mode) Pin MCLK Pin TDNn Interface Clocked High ( 16 MCLK) Clocked Pulse Dual Rail mode with Clock Recovery High Pulse Low Pulse Dual Rail mode with Data Recovery. Receive just slices the incoming data. Transmit is determined by the status of TCLKn. Receiver is powered down. Transmit is determined by the status of TCLKn. Single Rail Mode 1 13 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES Table-3 System Interface Configuration (In Host Mode) Pin MCLK Pin TDNn CRSn in e-CRS SINGn in e-SING Interface Clocked Clocked Clocked High Pulse Pulse 0 0 0 0 1 0 Clocked Pulse 1 0 High Pulse - - Low Pulse - - Single Rail Mode 1 Single Rail Mode 2 Dual Rail mode with Clock Recovery Dual Rail mode with Data Recovery. Receive just slices the incoming data. Transmit is determined by the status of TCLKn. Dual Rail mode with Data Recovery. Receive just slices the incoming data. Transmit is determined by the status of TCLKn. Receiver is powered down. Transmit is determined by the status of TCLKn. Table-4 Active Clock Edge and Active Level Pin RDn/RDPn and CVn/RDNn Clock Recovery Slicer Output Pin CLKE 2.3 High RCLKn Active High Active High SCLK Active High Low RCLKn Active High Active Low SCLK Active High CLOCK EDGES 2.4.1 PEAK DETECTOR AND SLICER The slicer determines the presence and polarity of the received pulses. In data recovery mode, the raw positive slicer output appears on RDPn while the negative slicer output appears on RDNn. In clock and data recovery mode, the slicer output is sent to Clock and Data Recovery circuit for abstracting retimed data and optional decoding. The slicer circuit has a built-in peak detector from which the slicing threshold is derived. The slicing threshold is default to 50% (typical) of the peak value. The active edge of RCLKn and SCLK are selectable. If pin CLKE is high, the active edge of RCLKn is the rising edge, as for SCLK, that is falling edge. On the contrary, if CLKE is low, the active edge of RCLK is the falling edge and that of SCLK is rising edge. Pins RDn/RDPn, CVn/ RDNn and SDO are always active high, and those output signals are clocked out on the active edge of RCLKn and SCLK respectively. See Table-4 Active Clock Edge and Active Level on page 14 for details. However, in dual rail mode without clock recovery, pin CLKE is used to set the active level for RDPn/RDNn raw slicing output: High for active high polarity and low for active low. It should be noted that data on pin SDI are always active high and are sampled on the rising edges of SCLK. The data on pin TDn/TDPn or BPVIn/TDNn are also always active high but are sampled on the falling edges of TCLKn, despite the level on CLKE. 2.4 Pin SDO Signals with an attenuation of up to 12 dB (from 2.4 V) can be recovered by the receiver. To provide immunity from impulsive noise, the peak detectors are held above a minimum level of 0.150 V typically, despite the received signal level. 2.4.2 CLOCK AND DATA RECOVERY The Clock and Data Recovery is accomplished by Digital Phase Locked Loop (DPLL). The DPLL is clocked 16 times of the received clock rate, i.e. 24.704 MHz in T1 mode or 32.768 MHz in E1 mode. The recovered data and clock from DPLL is then sent to the selectable Jitter Attenuator or decoder for further processing. RECEIVER In receive path, the line signals couple into RRINGn and RTIPn via a transformer and are converted into RZ digital pulses by a data slicer. Adaptation for attenuation is achieved using an integral peak detector that sets the slicing levels. Clock and data are recovered from the received RZ digital pulses by a digital phase-locked loop that provides jitter accommodation. After passing through the selectable jitter attenuator, the recovered data are decoded using B8ZS/HDB3 or AMI line code rules and clocked out of pin RDn in single rail mode, or presented on RDPn/RDNn in an undecoded dual rail NRZ format. Loss of signal, alarm indication signal, line code violation and excessive zeros are detected. The presence of programmable inband loopback codes are also detected. These various changes in status may be enabled to generate interrupts. The clock recovery and data recovery mode can be selected on a per channel basis by setting bit CRSn in register e-CRS. When bit CRSn is defaulted to ‘0’, the corresponding channel operates in data and clock recovery mode. The recovered clock is output on pin RCLKn and retimed NRZ data are output on pin RDPn/RDNn in dual rail mode or on RDn in single rail mode. When bit CRSn is set to ‘1’, dual rail mode with data recovery is enabled in the corresponding channel and the clock recovery is bypassed. In this condition, the analog line signals are converted to RZ digital bit streams on the RDPn/RDNn pins and internally connected to an EXOR which is fed to the RCLKn output for external clock recovery applications. If MCLK is pulled high, all the receivers will enter the dual rail mode with data recovery. In this case, register e-CRS is ignored. 14 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES The configuration of the line code rule is summarized in Table-5. 2.4.3 B8ZS/HDB3/AMI LINE CODE RULE Selectable B8ZS/HDB3 and AMI line coding/decoding is provided when the device is configured in single rail mode. B8ZS rules for T1 and HDB3 rules for E1 are enabled by setting bit CODE in register GCF to ‘0’ or pulling pin CODE low. AMI rule is enabled by setting bit CODE in register GCF to ‘1’ or pulling pin CODE high. The settings affect all eight channels. 2.4.4 LOSS OF SIGNAL (LOS) DETECTION The Loss of Signal Detector monitors the amplitude and density of the received signal on receiver line before the transformer (measured on port A, B shown in Figure-14). The loss condition is reported by pulling pin LOSn high. At the same time, LOS alarm registers track LOS condition. When LOS is detected or cleared, an interrupt will generate if not masked. In host mode, the detection supports the ANSI T1.231 for T1 mode, ITU G.775 and ETSI 300 233 for E1 mode. In hardware mode, it supports the ITU G.775 and ANSI T1.231. Individual line code rule selection for each channel, if needed, is available by setting bit SINGn in register e-SING to ‘1’ (to activate bit CODEn in register e-CODE) and programming bit CODEn to select line code rules in the corresponding channel: ‘0’ for B8ZS/HDB3, while ‘1’ for AMI. In this case, the value in bit CODE in register GCF or pin CODE for global control is unaffected in the corresponding channel and only affect in other channels. Table-6 summarizes the conditions of LOS in clock recovery mode. During LOS, the RDPn/RDNn continue to output the sliced data when bit AISE in register GCF is set to ‘0’ or output all ones as AIS (alarm indication signal) when bit AISE is set to ‘1’. The RCLKn is replaced by MCLK only if the bit AISE is set. In dual rail mode, the decoder/encoder are bypassed. Bit CODE in register GCF, bit CODEn in register e-CODE and pin CODE are ignored. Table-5 Configuration of the Line Code Rule CODE Low High Hardware Mode Line Code Rule CODE in GCF 0 0 1 1 0 1 All channels in B8ZS/HDB3 All channels in AMI CODEn in e-CODE 0/1 0 0/1 1 1 0 Host Mode SINGn in e-SING 0 1 0 1 1 1 Line Code Rule All channels in B8ZS/HDB3 All channels in AMI CHn in AMI CHn in B8ZS/HDB3 Table-6 LOS Condition in Clock Recovery Mode Standard LOS Detected Continuous Intervals LOS Cleared Density Amplitude(1) Amplitude(1) 1. ANSI T1.231 for T1 G.775 for E1 ETSI 300 233 for E1 175 32 2048 (1 ms) below typical 200 mVp below typical 200 mVp below typical 200 mVp 12.5% (16 marks in a sliding 128-bit 12.5% (4 marks in a sliding 32-bit period) with no more than 99 contin- period) with no more than 15 conuous zeros tinuous zeros 12.5% (4 marks in a sliding 32-bit period) with no more than 15 continuous zeros exceed typical 250 mVp exceed typical 250 mVp exceed typical 250 mVp Signal on LOSn High Low LOS levels at device (RTIPn, RRINGn) with all ones signal. For more detail regarding the LOS parameters, please refer to Receiver Characteristics on page 49. 2.4.5 ALARM INDICATION SIGNAL (AIS) DETECTION Alarm Indication Signal is available only in host mode with clock recovery, as shown in Table-7. excessive zeros and code violation are reported respectively. When the device is configured in AMI decoding mode, only bipolar violation can be reported. 2.4.6 ERROR DETECTION The device can detect excessive zeros, bipolar violation and B8ZS/ HDB3 code violation, as shown in Figure-7, Figure-8 and Figure-9. In host mode, the e-CZER and e-CODV are used to determine whether The error detection is available only in single rail mode in which the pin CVn/RDNn is used as error report output (CVn pin). The configuration and report status of error detection are summarized in Table-8. 15 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES Table-7 AIS Condition AIS Detected AIS Cleared ITU G.775 for E1 (Register LAC defaulted to ‘0’) ETSI 300 233 for E1 (Register LAC set to ‘1’) ANSI T1.231 for T1 Less than 3 zeros contained in each of two consecutive 512-bit stream are received 3 or more zeros contained in each of two consecutive 512-bit stream are received Less than 3 zeros contained in a 512-bit stream are received 3 or more zeros contained in a 512-bit stream are received Less than 9 zeros contained in a 8192-bit stream (a ones density of 99.9% over a period of 5.3 ms) are received 9 or more zeros contained in a 8192-bit stream are received Table-8 Error Detection Hardware Mode Host Mode Line Code Pin CVn Reports Line Code CODVn in e-CODV CZERn in e-CZER AMI Bipolar Violation AMI B8ZS/ HDB3 Bipolar Violation + Code Violation B8ZS/HDB3 0 0 1 1 0 1 0 1 Pin CVn Reports Bipolar Violation Bipolar Violation + Code Violation Bipolar Violation + Code Violation + Excessive Zeros Bipolar Violation Bipolar Violation + Excessive Zeros (pulses) are transmitted or received alternatively on tip and ring. If a mark (pulse) is transmitted or received in the same polarity as the prior mark (pulse), it is a bipolar violation. 2.4.6.1 BPV DETECTION AND REPORTING IN AMI LINE CODING AMI stands for Alternative Mark Inversion. It uses bipolar pulses to represent logical values. A logic 0 is represented by no symbol and a logic 1 by pulses of alternating polarity. In AMI line coding, marks Bipolar violation (BPV) is a non-zero signal element in an AMI signal that has the same polarity as the previous non-zero signal element. RCLKn RTIPn RRINGn RDn 1 3 2 5 V 4 1 7 6 2 3 4 5 V 6 CVn Bipolar Violation Bipolar Violation detected Figure-7 AMI Bipolar Violation The detection of code violation in 000V, coded for 4 consecutive zeros in HDB3 line coding, depends on the number of alternate ones between two consecutive ‘V’ (code violation) in the input data pattern. If the number of alternate ones between two consecutive violations is an odd number, no violation detection is reported. In Figure-8 input pattern, there is one code violation detection for two 000V patterns. It can be inferred that in Figure-8, there is another code violation prior to the first 000V pattern, and the number of alternate pulses between these two violations is an odd number. 2.4.6.2 EXZ AND BPV DETECTION IN HDB3 The purpose of HDB3 is to prevent transmission of more than 3 consecutive zeros while maintaining DC balance. HDB3 encoder will encode any 4 consecutive zeros as 000V or B00V where V is a bipolar violation and B is a balancing pulse that is opposite in polarity to the previous V. If there is an odd number of B pulses since the last V, then the four consecutive zeros will be substituted as 000V. If there is an even number of B pulses since the last V, then B00V substitution is chosen. The HDB3 decoder, once receiving correctly encoded 000V or B00V, will automatically restore the pattern back into 4 consecutive zeros. Conversely, if the number of alternate pulses between two violations is an even number, there is a code violation reported for 000V as in Figure-9. HDB3 decoder will report an EXZ (excessive zero) when it receives 4 consecutive zeros. 16 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES Code violation RCLKn RTIPn 1 3 5 4 consecutive zeros RRINGn 2 4 RDn 1 V 2 V 3 6 4 5 6 CVn Excessive zeros detected Code violation detected Figure-8 HDB3 Code Violation & Excessive Zeros RCLKn RTIPn RRINGn RDn CVn 1 0 0 0 V 2 B 0 0 V 4 3 6 5 0 1 0 0 2 V 3 V 0 4 5 0 0 7 V 6 7 V V Figure-9 HDB3 Code Violations & Two BPV Detections pulses will not appear on RDn and CVn pins in this BPV case. Sometimes, a BPV occurs as a result of transmission line noise or interference. As such, it is an error and should be detected and reported. 2.4.6.3 EXZ AND BPV DETECTION IN B8ZS B8ZS (Binary 8 Zero Substitution) is an AMI line code with the substitution of a unique code to replace occurrences of eight consecutive zero signal elements. Each block of eight successive zeros is replaced by 000VB0VB, where B represents an inserted non-zero signal element, and V represents an inserted non-zero signal element that is a bipolar violation. An excessive zeros (EXZ) for a B8ZS-coded signal is the occurrence of any zero-string length greater than seven contiguous zeros. As shown in Figure-11, all three bipolar violations (pulse ‘2’, ‘4’ and ‘5’) in the input data pattern are treated as individual code violations: they are recovered as data bits in RD signal line and a BPV is detected for each of the three violated pulses. Bipolar violation (BPV) is a non-zero signal element that has the same polarity as the previous non-zero signal element. in normal B8ZS line coding for 8 contiguous zeros, two BPV signals are deliberately inserted. BPV in this case is not an error. Therefore, data and error 17 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES RCLKn RTIPn 2 4 6 8 8 consecutive zeros RRINGn 1 3 RDn 5 1 2 7 3 4 5 9 6 7 8 CVn Excessive zeros detected Figure-10 B8ZS Excessive Zeros RCLKn RTIPn 1 1 RRINGn RDn 2 0 0 0 V 6 B 0 3 V V 4 5 2 3 1 4 5 6 CVn Figure-11 B8ZS Bipolar Violation 2.5 TRANSMITTER E1 pulse template, specified in ITU-T G.703, is shown in Figure-13. The device has built-in transmit waveform templates for cable of 75  or 120 . In transmit path, data in NRZ format are clocked into the device on TDn and encoded by AMI or B8ZS/HDB3 line code rules when single rail mode is configured or pre-encoded data in NRZ format are input on TDPn and TDNn when dual rail mode is configured. The data are sampled into the device on falling edges of TCLKn. Jitter attenuator, if enabled, is provided with a FIFO through which the data to be transmitted are passing. A low jitter clock is generated by an integral digital phase-locked loop and is used to read data from the FIFO. The shape of the pulses are user programmable to ensure that the T1/E1 pulse template is met after the signal passes through different cable lengths or types. Bipolar violation, for diagnosis, can be inserted on pin BPVIn if AMI line code rule is enabled. Any one of the six built-in waveforms can be chosen in both hardware mode and host mode. In hardware mode, setting pins TS[2:0] can select the required waveform template for all the transmitters, as shown in Table-9. In host mode, the waveform template can be configured on a per-channel basis. Bits TSIA[2:0] in register TSIA are used to select the channel and bits TS[2:0] in register TS are used to select the required waveform template. The built-in waveform shaper uses an internal high frequency clock which is 16XMCLK as the clock reference. This function will be bypassed when MCLK is unavailable. 2.5.1 WAVEFORM SHAPER T1 pulse template, specified in the DSX-1 Cross-Connect by ANSI T1.102, is illustrated in Figure-12. The device has built-in transmit waveform templates, corresponding to 5 levels of pre-equalization for cable of a length from 0 to 655 ft with each increment of 133 ft. 18 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES 1.20 1.2 1 1.00 0.80 0.6 Normalized Amplitude Normalized Amplitude 0.8 0.4 0.2 0 0.60 0.40 -0.2 0.20 -0.4 -0.6 0.00 0 250 500 750 1000 1250 Time (ns) -0.20 Figure-12 DSX-1 Waveform Template -300 -200 -100 0 Time (ns) 100 200 300 Figure-13 CEPT Waveform Template Table-9 Built-in Waveform Template Selection 1. TS2 TS1 TS0 Service Clock Rate Cable Length Maximum Cable Loss (dB)(1) 0 0 0 E1 2.048 MHz 120 /75  Cable - 0 0 0 1 1 1 1 0 1 1 0 0 1 1 1 0 1 0 1 0 1 Reserved T1 0-133 ft. ABAM 133-266 ft. ABAM 266-399 ft. ABAM 399-533 ft. ABAM 533-655 ft. ABAM 1.544 MHz 0.6 1.2 1.8 2.4 3.0 Maximum cable loss at 772 kHz. 2.5.2 BIPOLAR VIOLATION INSERTION When configured in Single Rail Mode 2 with AMI line code enabled, pin TDNn/BPVIn is used as BPVI input. A low-to-high transition on this pin inserts a bipolar violation on the next available mark in the transmit data stream. Sampling occurs on the falling edges of TCLK. But in TAOS (Transmit All Ones) with Analog Loopback, Remote Loopback and Inband Loopback, the BPVI is disabled. In TAOS with Digital Loopback, the BPVI is looped back to the system side, so the data to be transmitted on TTIPn and TRINGn are all ones with no bipolar violation. The jitter attenuator integrates a FIFO which can accommodate a gapped TCLK. In host mode, the FIFO length can be 32 X 2 or 64 X 2 bits by programming bit JADP in GCF. In hardware mode, it is fixed to 64 X 2 bits. The FIFO length determines the maximum permissible gap width (see Table-10 Gap Width Limitation). Exceeding these values will cause FIFO overflow or underflow. The data is 16 or 32 bits’ delay through the jitter attenuator in the corresponding transmit or receive path. The constant delay feature is crucial for the applications requiring “hitless” switching. 2.6 Table-10 Gap Width Limitation JITTER ATTENUATOR The jitter attenuator can be selected to work either in transmit path or in receive path or not used. The selection is accomplished by setting pin JAS in hardware mode or configuring bits JACF[1:0] in register GCF in host mode, which affects all eight channels. FIFO Length 64 bit 32 bit Max. Gap Width 56 UI 28 UI In host mode, bit JABW in GCF determines the jitter attenuator 3 dB corner frequency (fc) for both T1 and E1. In hardware mode, the fc is fixed to 2.5 Hz for T1 or 1.7 Hz for E1. Generally, the lower the fc is, the higher the attenuation. However, lower fc comes at the expense of increased acquisition time. Therefore, the optimum fc is to optimize both the attenuation and the acquisition time. In addition, the longer FIFO length results in an increased throughput delay and also influences the 3 dB corner frequency. Generally, it’s recommended to use the lower corner frequency and the shortest FIFO length that can still meet jitter attenuation requirements. For applications which require line synchronization, the line clock needed to be extracted for the internal synchronization, the jitter attenuator is set in the receive path. Another use of the jitter attenuator is to provide clock smoothing in the transmit path for applications such as synchronous/asynchronous demultiplexing applications. In these applications, TCLK will have an instantaneous frequency that is higher than the nominal T1/E1 data rate and in order to set the average long-term TCLK frequency within the transmit line rate specifications, periods of TCLK are suppressed (gapped). 19 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES Table-11 Output Jitter Specification T1 AT&T Pub 62411 GR-253-CODE E1 ITU-T G.736 ITU-T G.742 ITU-T G.783 ETSI CTR 12/13 TR-TSY-000009 2.7 LINE INTERFACE CIRCUITRY The transmit and receive interface RTIPn/RRINGn and TTIPn/ TRINGn connections provide a matched interface to the cable. Figure14 shows the appropriate external components to connect with the cable for one transmit/receive channel. Table-12 summarizes the component values based on the specific application. Table-12 External Components Values E1 T1 100  Twisted Pair, VDDT = 5.0 V 9.1   1% 12.4   1% 2200 pF 1000 pF Nihon Inter Electronics - EP05Q03L, 11EQS03L, EC10QS04, EC10QS03L; Motorola - MBR0540T1 75  Coax 9.5   1% 9.31   1% RT RR Cp D1 - D4 1 2:1   A  0.22 F RX Line   B 1 2:1   TX Line 120  Twisted Pair 9.5   1% 15   1% 1 k VDDT D8 RR D7 RR VDDT D6 1 k D5 VDDT D4 RT D3 One of Eight Identical Channels RTIPn RRINGn TTIPn IDT82V2048 Component VDDT  VDDDn 2 68 F3 0.1 F Cp VDDT D2 RT D1 GNDTn  TRINGn NOTE: 1. Pulse T1124 transformer is recommended to be used in Standard (STD) operating temperature range (0°C to 70°C), while Pulse T1114 transformer is recommended to be used in Extended (EXT) operating temperature range is -40°C to +85°C. See Transformer Specifications Table for details. 2. Typical value. Adjust for actual board parasitics to obtain optimum return loss. 3. Common decoupling capacitor for all VDDT and GNDT pins. One per chip. Figure-14 External Transmit/Receive Line Circuitry 2.8 TRANSMIT DRIVER POWER SUPPLY In T1 mode, only 5.0 V can be selected, 100 lines are driven through a pair of 9.1  series resistors and a 1:2 transformer. All transmit driver power supplies must be 5.0 V or 3.3 V. In harsh cable environment, series resistors are required to improve the transmit return loss performance and protect the device from surges coupling into the device. In E1 mode, despite the power supply voltage, the 75 /120  lines are driven through a pair of 9.5  series resistors and a 1:2 transformer. Table-13 Transformer Specifications(1) Part No. STD Temp. EXT Temp. T1124 T1114 1. Turns Ratio (Pri: sec ± 2%) Transmit Receive 1:2CT 1CT:2 Electrical Specification @ 25°C OCL @ 25°C (mH MIN) LL (H MAX) Transmit Receive Transmit Receive 1.2 1.2 .6 .6 CW/W (pF MAX) Transmit Receive 35 35 Package/Schematic TOU/3 Pulse T1124 transformer is recommended to be used in Standard (STD) operating temperature range (0°C to 70°C), while Pulse T1114 transformer is recommended to be used in Extended (EXT) operating temperature range is -40°C to +85°C. 20 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT 2.9 POWER DRIVER FAILURE MONITOR INDUSTRIAL TEMPERATURE RANGES 2.16 INTERFACE WITH 5 V LOGIC An internal power Driver Failure Monitor (DFMON), parallel connected with TTIPn and TRINGn, can detect short circuit failure between TTIPn and TRINGn pins. Bit SCPB in register GCF decides whether the output driver short circuit protection is enabled. When the short circuit protection is enabled, the driver output current is limited to a typical value: 180 mAp. Also, register DF, DFI and DFM will be available. When DFMON will detect a short circuit, register DF will be set. With a short circuit failure detected and short circuit protection enabled, register DFI will be set and an interrupt will be generated on pin INT. The IDT82V2048 can interface directly with 5 V TTL family devices. The internal input pads are tolerant to 5 V output from TTL and CMOS family devices. 2.17 LOOPBACK MODE The device provides five different diagnostic loopback configurations: Digital Loopback, Analog Loopback, Remote Loopback, Dual Loopback and Inband Loopback. In host mode, these functions are implemented by programming the registers DLB, ALB, RLB and Inband Loopback register group respectively. In hardware mode, only Analog Loopback and Remote Loopback can be selected by pin LPn. 2.10 TRANSMIT LINE SIDE SHORT CIRCUIT FAILURE DETECTION 2.17.1 DIGITAL LOOPBACK By programming the bits of register DLB, each channel of the device can be configured in Local Digital Loopback. In this configuration, the data and clock to be transmitted, after passing the encoder, are looped back to Jitter Attenuator (if enabled) and decoder in the receive path, then output on RCLKn, RDn/RDPn and CVn/RDNn. The data to be transmitted are still output on TTIPn and TRINGn while the data received on RTIPn and RRINGn are ignored. The Loss Detector is still in use. Figure-15 shows the process. In E1 or T1 with 5 V VDDT, a pair of 9.5  serial resistors connect with TTIPn and TRINGn pins and limit the output current. In this case, the output current is a limited value which is always lower than the typical line short circuit current 180 mAp, even if the transmit line side is shorted. Refer to Table-12 External Components Values for details. 2.11 LINE PROTECTION In transmit side, the Schottky diodes D1~D4 are required to protect the line driver and improve the design robustness. In receive side, the series resistors of 1 k are used to protect the receiver against current surges coupled in the device. The series resistors do not affect the receiver sensitivity, since the receiver impedance is as high as 120 k typically. During Digital Loopback, the received signal on the receive line is still monitored by the LOS Detector (See 2.4.4 Loss of Signal (LOS) Detection for details). In case of a LOS condition and AIS insertion enabled, all ones signal will be output on RDPn/RDNn. With ATAO enabled, all ones signal will be also output on TTIPn/TRINGn. AIS insertion can be enabled by setting AISE bit in register GCF and ATAO can be enabled by setting register ATAO (default disabled). 2.12 HITLESS PROTECTION SWITCHING (HPS) 2.17.2 ANALOG LOOPBACK By programming the bits of register ALB or pulling pin LPn high, each channel of the device can be configured in Analog Loopback. In this configuration, the data to be transmitted output from the line driver are internally looped back to the slicer and peak detector in the receive path and output on RCLKn, RDn/RDPn and CVn/RDNn. The data to be transmitted are still output on TTIPn and TRINGn while the data received on RTIPn and RRINGn are ignored. The LOS Detector (See 2.4.4 Loss of Signal (LOS) Detection for details) is still in use and monitors the internal looped back data. If a LOS condition on TDPn/TDNn is expected during Analog Loopback, ATAO should be disabled (default). Figure-16 shows the process. The IDT82V2048 transceivers include an output driver with high-Z feature for T1/E1 redundancy applications. This feature reduces the cost of redundancy protection by eliminating external relays. Details of HPS are described in relative Application Note. 2.13 SOFTWARE RESET Writing register RS will cause software reset by initiating about 1 s reset cycle. This operation set all the registers to their default value. 2.14 POWER ON RESET During power up, an internal reset signal sets all the registers to default values. The power-on reset takes at least 10 s, starting from when the power supply exceeds 2/3 VDDA. The TTIPn and RTIPn, TRINGn and RRINGn cannot be connected directly to do the external analog loopback test. Line impedance loading is required to conduct the external analog loopback test. 2.15 POWER DOWN 2.17.3 REMOTE LOOPBACK By programming the bits of register RLB or pulling pin LPn low, each channel of the device can be set in Remote Loopback. In this configuration, the data and clock recovered by the clock and data recovery circuits are looped to waveform shaper and output on TTIPn and TRINGn. The jitter attenuator is also included in loopback when enabled in the transmit or receive path. The received data and clock are still output on RCLKn, RDn/RDPn and CVn/RDNn while the data to be transmitted on TCLKn, TDn/TDPn and BPVIn/TDNn are ignored. The LOs Detector is still in use. Figure-17 shows the process. Each transmit channel will be powered down by pulling pin TCLKn low for more than 64 MCLK cycles (if MCLK is available) or about 30 s (if MCLK is not available). In host mode, each transmit channel will also be powered down by setting bit TPDNn in register e-TPDN to ‘1’. All the receivers will be powered down when MCLK is low. When MCLK is clocked or high, setting bit RPDNn in register e-RPDN to ‘1’ will configure the corresponding receiver to be powered down. 21 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES 2.17.5 TRANSMIT ALL ONES (TAOS) In hardware mode, the TAOS mode is set by pulling pin TCLKn high for more than 16 MCLK cycles. In host mode, TAOS mode is set by programming register TAO. In addition, automatic TAOS signals are inserted by setting register ATAO when Loss of Signal occurs. Note that the TAOS generator adopts MCLK as a timing reference. In order to assure that the output frequency is within specified limits, MCLK must have the applicable stability. 2.17.4 DUAL LOOPBACK Dual Loopback mode is set by setting bit DLBn in register DLB and bit RLBn in register RLB to ‘1’. In this configuration, after passing the encoder, the data and clock to be transmitted are looped back to decoder directly and output on RCLKn, RDn/RDPn and CVn/RDNn. The recovered data from RTIPn and RRINGn are looped back to waveform shaper through JA (if selected) and output on TTIPn and TRINGn. The LOS Detector is still in use. Figure-18 shows the process. The TAOS mode, the TAOS mode with Digital Loopback and the TAOS mode with Analog Loopback are shown in Figure-19, Figure-20 and Figure-21. One of Eight Identical Channels LOS Detector CLK&Data Recovery (DPLL) RTIPn Slicer RRINGn Line Driver TRINGn Jitter Attenuator B8ZS/ HDB3/AMI Decoder RCLKn RDn/RDPn CVn/RDNn Jitter Attenuator B8ZS/ HDB3/AMI Encoder TCLKn TDn/TDPn BPVIn/TDNn Digital Loopback Peak Detector TTIPn LOSn Waveform Shaper Transmit All Ones Figure-15 Digital Loopback LOS Detector RTIPn Slicer RRINGn Analog Loopback TTIPn TRINGn CLK&Data Recovery (DPLL) One of Eight Identical Channels LOSn Jitter Attenuator B8ZS/ HDB3/AMI Decoder RCLKn RDn/RDPn CVn/RDNn B8ZS/ HDB3/AMI Encoder TCLKn TDn/TDPn BPVIn/TDNn Peak Detector Line Driver Waveform Shaper Jitter Attenuator Transmit All Ones Figure-16 Analog Loopback 22 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES One of Eight Identical Channels LOS Detector RTIPn CLK&Data Recovery (DPLL) Slicer RRINGn LOSn B8ZS/ HDB3/AMI Decoder Jitter Attenuator TTIPn Waveform Shaper Line Driver TRINGn IBLC Detector Remote/ Inband Loopback Peak Detector RCLKn RDn/RDPn CVn/RDNn B8ZS/ HDB3/AMI Encoder Jitter Attenuator TCLKn TDn/TDPn BPVIn/TDNn IBLC Generator Transmit All Ones Figure-17 Remote Loopback LOS Detector RTIPn Slicer RRINGn CLK&Data Recovery (DPLL) One of Eight Identical Channels LOSn Jitter Attenuator B8ZS/ HDB3/AMI Decoder RCLKn RDn/RDPn CVn/RDNn B8ZS/ HDB3/AMI Encoder TCLKn TDn/TDPn BPVIn/TDNn Peak Detector TTIPn TRINGn Line Driver Jitter Attenuator Waveform Shaper Transmit All Ones Figure-18 Dual Loopback LOS Detector RTIPn Slicer RRINGn CLK&Data Recovery (DPLL) One of Eight Identical Channels LOSn Jitter Attenuator B8ZS/ HDB3/AMI Decoder RCLKn RDn/RDPn CVn/RDNn Peak Detector TTIPn TRINGn Line Driver Waveform Shaper Jitter Attenuator Transmit All Ones Figure-19 TAOS Data Path 23 B8ZS/ HDB3/AMI Encoder TCLKn TDn/TDPn BPVIn/TDNn IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES One of Eight Identical Channels LOS Detector RTIPn CLK&Data Recovery (DPLL) Slicer RRINGn LOSn Jitter Attenuator B8ZS/ HDB3/AMI Decoder RCLKn RDn/RDPn CVn/RDNn Jitter Attenuator B8ZS/ HDB3/AMI Encoder TCLKn TDn/TDPn BPVIn/TDNn Peak Detector TTIPn TRINGn Line Driver Waveform Shaper Transmit All Ones Figure-20 TAOS with Digital Loopback One of Eight Identical Channels LOS Detector RTIPn Slicer RRINGn LOSn CLK&Data Recovery (DPLL) Jitter Attenuator B8ZS/ HDB3/AMI Decoder RCLKn RDn/RDPn CVn/RDNn Peak Detector TTIPn TRINGn Line Driver Waveform Shaper B8ZS/ HDB3/AMI Encoder TCLKn TDn/TDPn BPVIn/TDNn Transmit All Ones Figure-21 TAOS with Analog Loopback of the Activate Code is defined in register e-LBAC, and the pattern of the Deactivate Code is defined in register e-LBDC. The above settings are globally effective for all the eight channels. The presence of Inband Loopback Code in each channel is reflected timely in register e-LBS. Any transition of each bit in register e-LBS will be reflected in register eLBI, and if enabled in register e-LBM, will generate an interrupt. The required sequence of programming the Inband Loopback Code detection is: First, set registers e-LBAC and e-LBDC, followed by register eLBM. Finally, to activate Inband Loopback detection, set register eLBCF. 2.17.6 INBAND LOOPBACK Inband Loopback is a function that facilitates the system remote diagnosis. When this function is enabled, the chip will detect or generate the Inband Loopback Code. There are two kinds of Inband Loopback Code: Activate Code and Deactivate Code. If the Activate Code is received from the far end in a continuous 5.1 second, the chip will automatically go into Remote Loopback Mode (shown in Figure-17). If the Deactivate Code is received from the far end in a continuous 5.1 second, the chip quits from the Remote Loopback mode. The chip can send the Activate Code and Deactivate Code to the far end. Two function blocks: IBLC Detector (Inband Loopback Code Detector) and IBLC Generator (Inband Loopback Code Generator), realize the Inband Loopback. The Inband Loopback Code Generator use the same registers as the Inband Loopback Detector to define the length and pattern of Activate Code and Deactivate Code. The length and pattern of the generated Activate Code and Deactivate Code can be different from the detected Activate Code and Deactivate Code. Register e-LBGS determines sending Activate Code or Deactivate Code, and register e-LBGE acts as a switch to start or stop the sending of Inband Loopback Code to the selected channels. Before sending Inband Loopback Code, users should be sure that registers e-LBCF, e-LBAC, e-LBDC and e-LBSG The detection of Inband Loopback Code is enabled by bit LBDE in register e-LBCF. If bit ALBE in register e-LBCF is set to ‘1’, the chip will automatically go into or quit from the Remote Loopback mode based on the receipt of Inband Loopback Code. The length of the Activate Code is defined in bits LBAL[1:0] in register e-LBCF; and the length of the Deactivate Code is defined in bits LBDL[1:0] in register e-LBCF. The pattern 24 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES e-LBDC (0x0A) = 0xE7 (11100111) e-LBCF (0x08) = 0x00 e-LBGS (0x0E) = 0x00 e-LBGE (0x0F) = 0x02 are configured properly. The required sequence for configuring the Inband Loopback Generator is: First, set registers e-LBAC and e-LBDC, followed by register e-LBCF. Then, to select the Inband Loopback generator set registers e-LBGS and then e-LBGE. 2.18 HOST INTERFACE The Inband Loopback Detection and the Inband Loopback Generation can not be used simultaneously. The host interface provides access to read and write the registers in the device. The interface consists of serial host interface and parallel host interface. By pulling pin MODE2 to VDDIO/2 or high, the device can be set to work in serial mode and in parallel mode respectively. Example: 5-bit Loop-up/Loop-down Detection (w/o interrupts): (see note in register description for e-LBAC) Loop-up code: 11000 Loop-down code: 11100 Set (in this order) e-LBAC (0x09) = 0xC6 (11000110) e-LBDC (0x0A) = 0xE7 (11100111) e-LBCF (0x08) = 0x30 Example: 5-bit Loop-up/Loop-down Activation on Channel 1 (w/o interrupts): 2.18.1 PARALLEL HOST INTERFACE The interface is compatible with Motorola and Intel host. Pins MODE1 and MODE0 are used to select the operating mode of the parallel host interface. When pin MODE1 is pulled low, the host uses separate address bus and data bus. When high, multiplexed address/ data bus is used. When pin MODE0 is pulled low, the parallel host interface is configured for Motorola compatible hosts. When pin MODE0 is pulled high, the parallel host interface is configured for Intel compatible hosts. See Table-1 Pin Description for more details. The host interface pins in each operation mode is tabulated in Table-14: Loop-up code: 11000 Loop-down code: 11100 Set (in this order) e-LBAC (0x09) = 0xC6 (11000110) Table-14 Parallel Host Interface Pins MODE[2:0] 100 101 110 111 Host Interface Non-multiplexed Motorola interface Non-multiplexed Intel interface Multiplexed Motorola interface Multiplexed Intel interface Generic Control, Data and Output Pin CS, ACK, DS, R/W, AS, A[4:0], D[7:0], INT CS, RDY, WR, RD, ALE, A[4:0], D[7:0], INT CS, ACK, DS, R/W, AS, AD[7:0], INT CS, RDY, WR, RD, ALE, AD[7:0], INT CS SCLK SDI 2 2 1 R/W A1 A2 A3 A4 A5 A6 A7 D0 D1 D2 D3 D4 D5 D6 D7 Address/Command Byte Input Data Byte D0 D1 D2 D3 D4 D5 D6 D7 SDO High Impedance Driven while R/W=1 1. While R/W=1, read from IDT82V2048; While R/W=0, write to IDT82V2048. 2. Ignored. Figure-22 Serial Host Mode Timing data byte (D7~D0), as shown in Figure-22. When bit R/W is set to ‘1’, data is read out from pin SDO. When bit R/W is set to ‘0’, data on pin SDI is written into the register whose address is indicated by address bits A5~A1. See Figure-22 Serial Host Mode Timing. 2.18.2 SERIAL HOST INTERFACE By pulling pin MODE2 to VDDIO/2, the device operates in the serial host Mode. In this mode, the registers are accessible through a 16-bit word which contains an 8-bit command/address byte (bit R/W and 5address-bit A1~A5, A6 and A7 bits are ignored) and a subsequent 8-bit 25 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT 2.19 INTERRUPT HANDLING INDUSTRIAL TEMPERATURE RANGES 2.19.2 INTERRUPT ENABLE The IDT82V2048 provides a latched interrupt output (INT) and the four kinds of interrupts are all reported by this pin. When the Interrupt Mask register (LOSM, DFM, AISM and e-LBM) is set to ‘1’, the Interrupt Status register (LOSI, DFI, AISI and e-LBI) is enabled respectively. Whenever there is a transition (‘0’ to ‘1’ or ‘1’ to ‘0’) in the corresponding status register, the Interrupt Status register will change into ‘1’, which means an interrupt occurs, and there will be a high to low transition on INT pin. An external pull-up resistor of approximately 10 k is required to support the wire-OR operation of INT. When any of the four Interrupt Mask registers is set to ‘0’ (the power-on default value is ‘0’), the corresponding Interrupt Status register is disabled and the transition on status register is ignored. 2.19.1 INTERRUPT SOURCES There are four kinds of interrupt sources: 1. Status change in register LOS. The analog/digital loss of signal detector continuously monitors the received signal to update the specific bit in register LOS which indicates presence or absence of a LOS condition. 2. Status change in register DF. The automatic power driver circuit continuously monitors the output drivers signal to update the specific bit in register DFM which indicates presence or absence of an output driver short circuit condition. 3. Status change in register AIS. The AIS detector monitors the received signal to update the specific bit in register AIS which indicates presence or absence of a AIS condition. 4. Status change in register e-LBS. The IBLC detector monitors the inband loopback activation or deactivation code in received signal to update the specific bit in register e-LBS which indicates presence or absence of an inband loopback condition. 2.19.3 INTERRUPT CLEARING When an interrupt occurs, the Interrupt Status registers: LOSI, DFI, AISI and e-LBI, are read to identify the interrupt source. These registers will be cleared to ‘0’ after the corresponding status registers: LOS, DF, AIS and e-LBS are read. The Status registers will be cleared once the corresponding conditions are met. Pin INT is pulled high when there is no pending interrupt left. The interrupt handling in the interrupt service routine is showed in Figure-23. No Interrupt Allowed 2.20 G.772 MONITORING Interrupt Condition Exist? The eight channels of IDT82V2048 can all be configured to work as regular transceivers. In applications using only seven channels (channels 1 to 7), channel 0 is configured to non-intrusively monitor any of the other channels’ inputs or outputs on the line side. The monitoring is nonintrusive per ITU-T G.772. Figure-24 shows the Monitoring Principle. The receiver path or transmitter path to be monitored is configured by pins MC[3:0] in hardware mode or by register PMON in host mode. The monitored signal goes through the clock and data recovery circuit of channel 0. The monitored clock can output on RCLK0 which can be used as a timing interfaces derived from E1 signal. The monitored data can be observed digitally at the output pins RCLK0, RD0/ RDP0 and RDN0. LOS detector is still in use in channel 0 for the monitored signal. Yes Read Interrupt Status Register In monitoring mode, channel 0 can be configured in Remote Loopback. The signal which is being monitored will output on TTIP0 and TRING0. The output signal can then be connected to a standard test equipment with an E1 electrical interface for non-intrusive monitoring. Read Corresponding Status Register Service the Interrupt Figure-23 Interrupt Service Routine 26 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES Channel N ( 7 > N > 1 ) LOS Detector RTIPn Slicer RRINGn LOSn CLK&Data Recovery (DPLL) Jitter Attenuator B8ZS/ HDB3/AMI Decoder RCLKn RDn/RDPn CVn/RDNn Waveform Shaper Jitter Attenuator B8ZS/ HDB3/AMI Encoder TCLKn TDn/TDPn BPVIn/TDNn Peak Detector TTIPn Line Driver TRINGn Transmit All Ones Channel 0 G.772 Monitor LOS Detector RTIP0 Slicer RRING0 CLK&Data Recovery (DPLL) LOS0 Jitter Attenuator TRING0 Line Driver RCLK0 RD0/RDP0 CV0/RDN0 Remote Loopback Peak Detector TTIP0 B8ZS/ HDB3/AMI Decoder Waveform Shaper Jitter Attenuator Transmit All Ones Figure-24 Monitoring Principle 27 B8ZS/ HDB3/AMI Encoder TCLK0 TD0/TDP0 BPVI0/TDN0 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES 3 PROGRAMMING INFORMATION The Register ADDP, addressed as 11111 or 1F Hex, switches between primary registers bank and expanded registers bank. 3.1 REGISTER LIST AND MAP By setting the register ADDP to ‘AAH’, the 5 address bits point to the expanded register bank, that is, the expanded registers are available. By clearing register ADDP, the primary registers are available. There are 23 primary registers (including an Address Pointer Control Register and 16 expanded registers in the device). Primary Registers, whose addresses are 16H to 1EH, are reserved. Expanded registers, whose addresses are 10H to 1EH, are used for test and must be set to ‘0’ (default). Whatever the control interface is, 5 address bits are used to set the registers. In non-multiplexed parallel interface mode, the five dedicated address bits are A[4:0]. In multiplexed parallel interface mode, AD[4:0] carries the address information. In serial interface mode, A[5:1] are used to address the register. Table-15 Primary Register List Address Hex 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E Serial Interface A7-A1 XX00000 XX00001 XX00010 XX00011 XX00100 XX00101 XX00110 XX00111 XX01000 XX01001 XX01010 XX01011 XX01100 XX01101 XX01110 XX01111 XX10000 XX10001 XX10010 XX10011 XX10100 XX10101 XX10110 XX10111 XX11000 XX11001 XX11010 XX11011 XX11100 XX11101 XX11110 Parallel Interface A7-A0 XXX00000 XXX00001 XXX00010 XXX00011 XXX00100 XXX00101 XXX00110 XXX00111 XXX01000 XXX01001 XXX01010 XXX01011 XXX01100 XXX01101 XXX01110 XXX01111 XXX10000 XXX10001 XXX10010 XXX10011 XXX10100 XXX10101 XXX10110 XXX10111 XXX11000 XXX11001 XXX11010 XXX11011 XXX11100 XXX11101 XXX11110 1F XX11111 XXX11111 Register R/W ID ALB RLB TAO LOS DF LOSM DFM LOSI DFI RS PMON DLB LAC ATAO GCF TSIA TS OE AIS AISM AISI R R/W R/W R/W R R R/W R/W R R W R/W R/W R/W R/W R/W R/W R/W R/W R R/W R Explanation Device ID Register Analog Loopback Configuration Register Remote Loopback Configuration Register Transmit All Ones Configuration Register Loss of Signal Status Register Driver Fault Status Register LOS Interrupt Mask Register Driver Fault Interrupt Mask Register LOS Interrupt Status Register Driver Fault Interrupt Status Register Software Reset Register Performance Monitor Configuration Register Digital Loopback Configuration Register LOS/AIS Criteria Configuration Register Automatic TAOS Configuration Register Global Configuration Register Indirect Address Register for Transmit Template Select Transmit Template Select Register Output Enable Configuration Register AIS Status Register AIS Interrupt Mask Register AIS Interrupt Status Register Reserved ADDP R/W Address pointer control Register for switching between primary register bank and expanded register bank 28 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES Table-16 Expanded (Indirect Address Mode) Register List Address Register R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R R/W R R/W R/W Explanation Hex Serial Interface A7-A1 Parallel Interface A7-A0 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E XX00000 XX00001 XX00010 XX00011 XX00100 XX00101 XX00110 XX00111 XX01000 XX01001 XX01010 XX01011 XX01100 XX01101 XX01110 XX01111 XX10000 XX10001 XX10010 XX10011 XX10100 XX10101 XX10110 XX10111 XX11000 XX11001 XX11010 XX11011 XX11100 XX11101 XX11110 XXX00000 XXX00001 XXX00010 XXX00011 XXX00100 XXX00101 XXX00110 XXX00111 XXX01000 XXX01001 XXX01010 XXX01011 XXX01100 XXX01101 XXX01110 XXX01111 XXX10000 XXX10001 XXX10010 XXX10011 XXX10100 XXX10101 XXX10110 XXX10111 XXX11000 XXX11001 XXX11010 XXX11011 XXX11100 XXX11101 XXX11110 e-SING e-CODE e-CRS e-RPDN e-TPDN e-CZER e-CODV e-EQUA e-LBCF e-LBAC e-LBDC e-LBS e-LBM e-LBI e-LBGS e-LBGE 1F XX11111 XXX11111 ADDP Single Rail Mode Setting Register Encoder/Decoder Selection Register Clock Recovery Enable/Disable Register Receiver n Powerdown Enable/Disable Register Transmitter n Powerdown Enable/Disable Register Consecutive Zero Detect Enable/Disable Register Code Violation Detect Enable/Disable Register Enable Equalizer Enable/Disable Register Inband Loopback Configuration Register Inband Loopback Activation Code Register Inband Loopback Deactivation Code Register Inband Loopback Code Receive Status Register Inband Loopback Interrupt Mask Register Inband Loopback Interrupt Status Register Inband Loopback Activate/Deactivate Code Generator Selection Register Inband Loopback Activate/Deactivate Code Generator Enable Register Test R/W 29 Address pointer control register for switching between primary register bank and expanded register bank IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES Table-17 Primary Register Map Register Address R/W Default Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 ID 00H R Default ID 7 R 0 ID 6 R 0 ID 5 R 0 ID 4 R 1 ID 3 R 0 ID 2 R 0 ID 1 R 0 ID 0 R 0 ALB 01H R/W Default ALB 7 R/W 0 ALB 6 R/W 0 ALB 5 R/W 0 ALB 4 R/W 0 ALB 3 R/W 0 ALB 2 R/W 0 ALB 1 R/W 0 ALB 0 R/W 0 RLB 02H R/W Default RLB 7 R/W 0 RLB 6 R/W 0 RLB 5 R/W 0 RLB 4 R/W 0 RLB 3 R/W 0 RLB 2 R/W 0 RLB 1 R/W 0 RLB 0 R/W 0 TAO 03H R/W Default TAO 7 R/W 0 TAO 6 R/W 0 TAO 5 R/W 0 TAO 4 R/W 0 TAO 3 R/W 0 TAO 2 R/W 0 TAO 1 R/W 0 TAO 0 R/W 0 LOS 04H R Default LOS 7 R 0 LOS 6 R 0 LOS 5 R 0 LOS 4 R 0 LOS 3 R 0 LOS 2 R 0 LOS 1 R 0 LOS 0 R 0 DF 05H R Default DF 7 R 0 DF 6 R 0 DF 5 R 0 DF 4 R 0 DF 3 R 0 DF 2 R 0 DF 1 R 0 DF 0 R 0 LOSM 06H R/W Default LOSM 7 R/W 0 LOSM 6 R/W 0 LOSM 5 R/W 0 LOSM 4 R/W 0 LOSM 3 R/W 0 LOSM 2 R/W 0 LOSM 1 R/W 0 LOSM 0 R/W 0 DFM 07H R/W Default DFM 7 R/W 0 DFM 6 R/W 0 DFM 5 R/W 0 DFM 4 R/W 0 DFM 3 R/W 0 DFM 2 R/W 0 DFM 1 R/W 0 DFM 0 R/W 0 LOSI 08H R Default LOSI 7 R 0 LOSI 6 R 0 LOSI 5 R 0 LOSI 4 R 0 LOSI 3 R 0 LOSI 2 R 0 LOSI 1 R 0 LOSI 0 R 0 DFI 09H R Default DFI 7 R 0 DFI 6 R 0 DFI 5 R 0 DFI 4 R 0 DFI 3 R 0 DFI 2 R 0 DFI 1 R 0 DFI 0 R 0 RS 0AH W Default RS 7 W 1 RS 6 W 1 RS 5 W 1 RS 4 W 1 RS 3 W 1 RS 2 W 1 RS 1 W 1 RS 0 W 1 PMON 0BH R/W Default R/W 0 R/W 0 R/W 0 R/W 0 MC 3 R/W 0 MC 2 R/W 0 MC 1 R/W 0 MC 0 R/W 0 DLB 0CH R/W Default DLB 7 R/W 0 DLB 6 R/W 0 DLB 5 R/W 0 DLB 4 R/W 0 DLB 3 R/W 0 DLB 2 R/W 0 DLB 1 R/W 0 DLB 0 R/W 0 LAC 0DH R/W Default LAC 7 R/W 0 LAC 6 R/W 0 LAC 5 R/W 0 LAC 4 R/W 0 LAC 3 R/W 0 LAC 2 R/W 0 LAC 1 R/W 0 LAC 0 R/W 0 ATAO 0EH R/W Default ATAO 7 R/W 0 ATAO 6 R/W 0 ATAO 5 R/W 0 ATAO 4 R/W 0 ATAO 3 R/W 0 ATAO 2 R/W 0 ATAO 1 R/W 0 ATAO 0 R/W 0 GCF 0FH R/W Default R/W 0 AISE R/W 0 SCPB R/W 0 CODE R/W 0 JADP R/W 0 JABW R/W 0 JACF 1 R/W 0 JACF 0 R/W 0 30 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES Table-17 Primary Register Map (Continued) Register Address R/W Default Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 TSIA 10 Hex R/W Default R/W 0 R/W 0 R/W 0 R/W 0 R/W 0 TSIA 2 R/W 0 TSIA 1 R/W 0 TSIA 0 R/W 0 TS 11 Hex R/W Default R/W 0 R/W 0 R/W 0 R/W 0 R/W 0 TS 2 R/W 0 TS 1 R/W 0 TS 0 R/W 0 OE 12 Hex R/W Default OE 7 R/W 0 OE 6 R/W 0 OE 5 R/W 0 OE 4 R/W 0 OE 3 R/W 0 OE 2 R/W 0 OE 1 R/W 0 OE 0 R/W 0 AIS 13 Hex R Default AIS 7 R 0 AIS 6 R 0 AIS 5 R 0 AIS 4 R 0 AIS 3 R 0 AIS 2 R 0 AIS 1 R 0 AIS 0 R 0 AISM 14 Hex R/W Default AISM 7 R/W 0 AISM 6 R/W 0 AISM 5 R/W 0 AISM 4 R/W 0 AISM 3 R/W 0 AISM 2 R/W 0 AISM 1 R/W 0 AISM 0 R/W 0 AISI 15 Hex R Default AISI 7 R 0 AISI 6 R 0 AISI 5 R 0 AISI 4 R 0 AISI 3 R 0 AISI 2 R 0 AISI 1 R 0 AISI 0 R 0 ADDP 1F Hex R/W Default ADDP 7 R/W 0 ADDP 6 R/W 0 ADDP 5 R/W 0 ADDP 4 R/W 0 ADDP 3 R/W 0 ADDP 2 R/W 0 ADDP 1 R/W 0 ADDP 0 R/W 0 31 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES Table-18 Expanded (Indirect Address Mode) Register Map Register e-SING e-CODE e-CRS e-RPDN e-TPDN e-CZER e-CODV e-EQUA e-LBCF e-LBAC e-LBDC e-LBS e-LBM e-LBI e-LBGS e-LBGE ADDP Address R/W Default Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 00H R/W Default 01H R/W Default 02H R/W Default 03H R/W Default 04H R/W Default 05H R/W Default 06H R/W Default 07H R/W Default 08H R/W Default 09H R/W Default 0AH R/W Default 0BH R Default 0CH R/W Default 0DH R/W Default 0EH R/W Default 0FH R/W Default 1FH R/W Default SING 7 R/W 0 CODE 7 R/W 0 CRS 7 R/W 0 RPDN 7 R/W 0 TPDN 7 R/W 0 CZER 7 R/W 0 CODV 7 R/W 0 EQUA 7 R/W 0 R/W 0 LBAC 7 R/W 0 LBDC 7 R/W 0 LBS 7 R 0 LBM 7 R/W 0 LBI 7 R 0 LBGS 7 R/W 0 LBGE 7 R/W 0 ADDP 7 R/W 0 SING 6 R/W 0 CODE 6 R/W 0 CRS 6 R/W 0 RPDN 6 R/W 0 TPDN 6 R/W 0 CZER 6 R/W 0 CODV 6 R/W 0 EQUA 6 R/W 0 R/W 0 LBAC 6 R/W 0 LBDC 6 R/W 0 LBS 6 R 0 LBM 6 R/W 0 LBI 6 R 0 LBGS 6 R/W 0 LBGE 6 R/W 0 ADDP 6 R/W 0 SING 5 R/W 0 CODE 5 R/W 0 CRS 5 R/W 0 RPDN 5 R/W 0 TPDN 5 R/W 0 CZER 5 R/W 0 CODV 5 R/W 0 EQUA 5 R/W 0 LBDE R/W 0 LBAC 5 R/W 0 LBDC 5 R/W 0 LBS 5 R 0 LBM 5 R/W 0 LBI 5 R 0 LBGS 5 R/W 0 LBGE 5 R/W 0 ADDP 5 R/W 0 SING 4 R/W 0 CODE 4 R/W 0 CRS 4 R/W 0 RPDN 4 R/W 0 TPDN 4 R/W 0 CZER 4 R/W 0 CODV 4 R/W 0 EQUA 4 R/W 0 ALBE R/W 0 LBAC 4 R/W 0 LBDC 4 R/W 0 LBS 4 R 0 LBM 4 R/W 0 LBI 4 R 0 LBGS 4 R/W 0 LBGE 4 R/W 0 ADDP 4 R/W 0 SING 3 R/W 0 CODE 3 R/W 0 CRS 3 R/W 0 RPDN 3 R/W 0 TPDN 3 R/W 0 CZER 3 R/W 0 CODV 3 R/W 0 EQUA 3 R/W 0 LBAL 1 R/W 0 LBAC 3 R/W 0 LBDC 3 R/W 0 LBS 3 R 0 LBM 3 R/W 0 LBI 3 R 0 LBGS 3 R/W 0 LBGE 3 R/W 0 ADDP 3 R/W 0 SING 2 R/W 0 CODE 2 R/W 0 CRS 2 R/W 0 RPDN 2 R/W 0 TPDN 2 R/W 0 CZER 2 R/W 0 CODV 2 R/W 0 EQUA 2 R/W 0 LBAL 0 R/W 0 LBAC 2 R/W 0 LBDC 2 R/W 0 LBS 2 R 0 LBM 2 R/W 0 LBI 2 R 0 LBGS 2 R/W 0 LBGE 2 R/W 0 ADDP 2 R/W 0 SING 1 R/W 0 SING 0 R/W 0 CODE 0 R/W 0 CRS 0 R/W 0 RPDN 0 R/W 0 TPDN 0 R/W 0 CZER 0 R/W 0 CODV 0 R/W 0 EQUA 0 R/W 0 LBDL 0 R/W 0 LBAC 0 R/W 0 LBDC 0 R/W 0 LBS 0 R 0 LBM 0 R/W 0 LBI 0 R 0 LBGS 0 R/W 0 LBGE 0 R/W 0 ADDP 0 R/W 0 32 CODE 1 R/W 0 CRS 1 R/W 0 RPDN 1 R/W 0 TPDN 1 R/W 0 CZER 1 R/W 0 CODV 1 R/W 0 EQUA 1 R/W 0 LBDL 1 R/W 0 LBAC 1 R/W 0 LBDC 1 R/W 0 LBS 1 R 0 LBM 1 R/W 0 LBI 1 R 0 LBGS 1 R/W 0 LBGE 1 R/W 0 ADDP 1 R/W 0 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT 3.2 REGISTER DESCRIPTION 3.2.1 PRIMARY REGISTERS INDUSTRIAL TEMPERATURE RANGES ID: Device ID Register (R, Address = 00H) Symbol Position Default ID[7:0] ID.7-0 10H Description An 8-bit word is pre-set into the device as the identification and revision number. This number is different with the functional changes and is mask programmed. ALB: Analog Loopback Configuration Register (R/W, Address = 01H) Symbol ALB[7:0] Position ALB.7-0 Default 00H Description 0 = Normal operation. (Default) 1 = Analog Loopback enabled. RLB: Remote Loopback Configuration Register (R/W, Address = 02H) Symbol Position Default RLB[7:0] RLB.7-0 00H Description 0 = Normal operation. (Default) 1 = Remote Loopback enabled. TAO: Transmit All Ones Configuration Register (R/W, Address = 03H) Symbol TAO[7:0] Position TAO.7-0 Default 00H Description 0 = Normal operation. (Default) 1 = Transmit all ones. LOS: Loss of Signal Status Register (R, Address = 04H) Symbol LOS[7:0] Position LOS.7-0 Default 00H Description 0 = Normal operation. (Default) 1 = Loss of signal detected. DF: Driver Fault Status Register (R, Address = 05H) Symbol DF[7:0] Position DF.7-0 Default 00H Description 0 = Normal operation. (Default) 1 = Driver fault detected. LOSM: Loss of Signal Interrupt Mask Register (R/W, Address = 06H) Symbol LOSM[7:0] Position LOSM.7-0 Default 00H Description 0 = LOS interrupt is not allowed. (Default) 1 = LOS interrupt is allowed. DFM: Driver Fault Interrupt Mask Register (R/W, Address = 07H) Symbol DFM[7:0] Position DFM.7-0 Default 00H Description 0 = Driver fault interrupt not allowed. (Default) 1 = Driver fault interrupt allowed. LOSI: Loss of Signal Interrupt Status Register (R, Address = 08H) Symbol Position Default LOSI[7:0] LOSI.7-0 00H Description 0 = (Default). Or after a LOS read operation. 1 = Any transition on LOSn (Corresponding LOSMn is set to ‘1’). 33 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES DFI: Driver Fault Interrupt Status Register (R, Address = 09H) Symbol Position Default DFI[7:0] DFI.7-0 00H Description 0 = (Default). Or after a DF read operation. 1 = Any transition on DFn (Corresponding DFMn is set to ‘1’). RS: Software Reset Register (W, Address = 0AH) Symbol Position Default RS[7:0] RS.7-0 FFH Description Writing to this register will not change the content in this register but initiate a 1 s reset cycle, which means all the registers in the device are set to their default values. PMON: Performance Monitor Configuration Register (R/W, Address = 0BH) Symbol Position Default - PMON.7-4 0000 MC[3:0] PMON.3-0 0000 Description 0 = Normal operation. (Default) 1 = Reserved. 0000 = Normal operation without monitoring (Default) 0001 = Monitor Receiver 1 0010 = Monitor Receiver 2 0011 = Monitor Receiver 3 0100 = Monitor Receiver 4 0101 = Monitor Receiver 5 0110 = Monitor Receiver 6 0111 = Monitor Receiver 7 1000 = Normal operation without monitoring 1001 = Monitor Transmitter 1 1010 = Monitor Transmitter 2 1011 = Monitor Transmitter 3 1100 = Monitor Transmitter 4 1101 = Monitor Transmitter 5 1110 = Monitor Transmitter 6 1111 = Monitor Transmitter 7 DLB: Digital Loopback Configuration Register (R/W, Address = 0CH) Symbol DLB[7:0] Position DLB.7-0 Default 00H Description 0 = Normal operation. (Default) 1 = Digital Loopback enabled. LAC: LOS/AIS Criteria Configuration Register (R/W, Address = 0DH) Symbol LAC[7:0] Position LAC.7-0 Default 00H Description For E1 mode, the criterion is selected as below: 0 = G.775 (Default) 1 = ETSI 300 233 For T1 mode, the criterion meets T1.231. ATAO: Automatic TAOS Configuration Register (R/W, Address = 0EH) Symbol Position Default ATAO[7:0] ATAO.7-0 00H Description 0 = No automatic transmit all ones. (Default) 1 = Automatic transmit all ones to the line side during LOS. 34 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES GCF: Global Configuration Register (R/W, Address = 0FH) Symbol Position Default - GCF.7 0 AISE GCF.6 0 SCPB GCF.5 0 CODE GCF.4 0 JADP GCF.3 0 JABW GCF.2 0 JACF[1:0] GCF.1-0 00 Description 0 = Normal operation. 1 = Reserved. 0 = AIS insertion to the system side disabled on LOS. 1 = AIS insertion to the system side enabled on LOS. 0 = Short circuit protection is enabled. 1 = Short circuit protection is disabled. 0 = B8ZS/HDB3 encoder/decoder enabled. 1 = AMI encoder/decoder enabled. Jitter Attenuator Depth Select 0 = 32-bit FIFO (Default) 1 = 64-bit FIFO Jitter Transfer Function Bandwidth Select 0 = 2.5 Hz (T1); 1.7 Hz (E1) (Default) 1 = 5 Hz; 6.5 Hz Jitter Attenuator Configuration 00 = JA not used. (Default) 01 = JA in transmit path 10 = JA not used. 11 = JA in receive path TSIA: Indirect Address Register for Transmit Template Select Registers (R/W, Address = 10H) Symbol Position Default - TSIA.7-3 00000 TSIA[2:0] TSIA.2-0 000 Description 0 = Normal operation. (Default) 1 = Reserved. 000 = Channel 0 (Default) 001 = Channel 1 010 = Channel 2 011 = Channel 3 100 = Channel 4 101 = Channel 5 110 = Channel 6 111 = Channel 7 TS: Transmit Template Select Register (R/W, Address = 11H) Symbol Position Default - TS.7-3 00000 TS[2-0] TS.2-0 000 Description 0 = Normal operation. (Default) 1 = Reserved. TS[2:0] select one of eight built-in transmit template for different applications. TS[2:0] 000 001 010 011 100 101 110 111 Mode E1 Cable Length 75  coaxial cable/120  twisted pair cable. Reserved. T1 T1 T1 T1 T1 0 - 133 ft. 133 - 266 ft. 266 - 399 ft. 399 - 533 ft. 533 - 655 ft. OE: Output Enable Configuration Register (R/W, Address = 12H) Symbol OE[7:0] Position OE.7-0 Default 00H Description 0 = Transmit drivers enabled. (Default) 1 = Transmit drivers in high-Z. 35 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES AIS: Alarm Indication Signal Status Register (R, Address = 13H) Symbol AIS[7:0] Position AIS.7-0 Default 00H Description 0 = Normal operation. (Default) 1 = AIS detected. AISM: Alarm Indication Signal Interrupt Mask Register (R/W, Address = 14H) Symbol AISM[7:0] Position AISM.7-0 Default 00H Description 0 = AIS interrupt is not allowed. (Default) 1 = AIS interrupt is allowed. AISI: Alarm Indication Signal Interrupt Status Register (R, Address = 15H) Symbol Position Default AISI[7:0] AISI.7-0 00H Description 0 = (Default), or after an AIS read operation 1 = Any transition on AISn. (Corresponding AISMn is set to ‘1’.) ADDP: Address Pointer Control Register (R/W, Address = 1F H) Symbol Position Default ADDP[7:0] ADDP.7-0 00H Description Two kinds of configuration in this register can be set to switch between primary register bank and expanded register bank. When power up, the address pointer will point to the top address of primary register bank automatically. 00H = The address pointer points to the top address of primary register bank (default). AAH = The address pointer points to the top address of expanded register bank. 36 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT 3.2.2 INDUSTRIAL TEMPERATURE RANGES EXPANDED REGISTER DESCRIPTION e-SING: Single Rail Mode Setting Register (R/W, Expanded Address = 00H) Symbol Position Default SING[7:0] SING.7-0 00H Description 0 = Pin TDNn selects single rail mode or dual rail mode. (Default) 1 = Single rail mode enabled (with CRSn=0) e-CODE: Encoder/Decoder Selection Register (R/W, Expanded Address = 01H) Symbol Position Default CODE[7:0] CODE.7-0 00H Description CODEn selects AMI or B8ZS/HDB3 encoder/decoder on a per channel basis with SINGn = 1 and CRSn = 0. 0 = B8ZS/HDB3 encoder/decoder enabled. (Default) 1 = AMI encoder/decoder enabled. e-CRS: Clock Recovery Enable/Disable Selection Register (R/W, Expanded Address = 02H) Symbol CRS[7:0] Position CRS.7-0 Default 00H Description 0 = Clock recovery enabled. (Default) 1 = Clock recovery disabled. e-RPDN: Receiver n Powerdown Register (R/W, Expanded Address = 03H) Symbol Position Default RPDN[7:0] RPDN.7-0 00H Description 0 = Normal operation. (Default) 1 = Receiver n is powered down. e-TPDN: Transmitter n Powerdown Register (R/W, Expanded Address = 04H) Symbol Position Default TPDN[7:0] TPDN.7-0 00H Description 0 = Normal operation. (Default) 1 = Transmitter n is powered down(1) (the corresponding transmit output driver enters a low power high-Z mode). 1. Transmitter n is powered down when either pin TCLKn is pulled low or TPDNn is set to ‘1’ e-CZER: Consecutive Zero Detect Enable/Disable Register (R/W, Expanded Address = 05H) Symbol Position Default CZER[7:0] CZER.7-0 00H Description 0 = Excessive zeros detect disabled. (Default) 1 = Excessive zeros detect enabled for B8ZS/HDB3 decoder in single rail mode. e-CODV: Code Violation Detect Enable/Disable Register (R/W, Expanded Address = 06H) Symbol Position Default CODV[7:0] CODV.7-0 00H Description 0 = Code Violation Detect enable for B8ZS/HDB3 decoder in single rail mode. (Default) 1 = Code Violation Detect disabled. e-EQUA: Receive Equalizer Enable/Disable Register (R/W, Expanded Address = 07H) Symbol Position Default Description EQUA[7:0] EQUA.7-0 00H 0 = Normal operation. (Default) 1 = Equalizer in Receiver n is enabled, which can improve the receive performance when transmission length is more than 200 m. 37 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES e-LBCF: Inband Loopback Configuration Register (1)(R/W, Expanded Address = 08H) 1. Symbol Position Default - LBCF.7-6 00 LBDE LBCF.5 0 ALBE LBCF.4 0 LBAL[1:0] LBCF.3-2 00 LBDL[1:0] LBCF.1-0 00 Description 0 = Normal Operation. (Default) 1 = Reserved. Loopback Detector Enable 0 = Inband loopback code detection is disabled. (Default) 1 = Inband loopback code detection is enabled. Automatic Loopback Enable 0 = Automatic Inband Loopback disabled. 1 = Automatic Inband Loopback enabled. Loopback Activate Code Length 00 = 5-bit long activate code in LBAC[7:3] is effective. 01 = 6-bit long activate code in LBAC[7:2] is effective. 10 = 7-bit long activate code in LBAC[7:1] is effective. 11 = 8-bit long activate code in LBAC[7:0] is effective. Loopback Deactivate Code Length 00 = 5-bit long deactivate code in LBDC[7:3] is effective. 01 = 6-bit long deactivate code in LBDC[7:2] is effective. 10 = 7-bit long deactivate code in LBDC[7:1] is effective. 11 = 8-bit long deactivate code in LBDC[7:0] is effective. This register is global control. e-LBAC: Inband Loopback Activation Code Register(1)(2)(R/W, Expanded Address = 09H) Symbol LBAC[7:0] Position LBAC.7-0 Default 00H Description LBAC[7:0] = 8-bit (or 4-bit) repeating activate code is programmed with the length limitation in LBAL[1:0]. LBAC[7:1] = 7-bit repeating activate code is programmed with the length limitation in LBAL[1:0]. LBAC[7:2] = 6-bit (or 3-bit) repeating activate code is programmed with the length limitation in LBAL[1:0]. LBAC[7:3] = 5-bit repeating activate code is programmed with the length limitation in LBAL[1:0]. 1. When setting a value in e-LBAC or e-LBDC that is less than 8 bits, the most significant bits must be replicated in the unused least significant bits. e.g. if setting a 5-bit code = 11000, the register value should be 11000110. Here b7 is repeated in b2; b6 is repeated in b1; b5 is repeated in b0. 2. This register is global control. e-LBDC: Inband Loopback Deactivation Code Register(1)(2)(R/W, Expanded Address = 0AH) Symbol LBDC[7:0] 1. Position LBDC.7-0 Default 00H Description LBDC[7:0] = 8-bit (or 4-bit) repeating deactivate code is programmed with the length limitation set by LBDL[1:0] bits. LBDC[7:1] = 7-bit repeating deactivate code is programmed with the length limitation set by LBDL[1:0] bits. LBDC[7:2] = 6-bit (or 3-bit) repeating deactivate code is programmed with the length limitation set by LBDL[1:0] bits. LBDC[7:3] = 5-bit repeating deactivate code is programmed with the length limitation set by LBDL[1:0] bits. When setting a value in e-LBAC or e-LBDC that is less than 8 bits, the most significant bits must be replicated in the unused least significant bits. e.g. if setting a 5-bit code = 11000, the register value should be 11000110. Here b7 is repeated in b2; b6 is repeated in b1; b5 is repeated in b0. 2. This register is global control. e-LBS: Inband Loopback Receive Status Register (R, Expanded Address = 0BH) Symbol Position Default LBS[7:0] LBS.7-0 00H Description 0 = Normal operation (Default). Or loopback deactivation code detected. 1 = Loopback activation code detected. e-LBM: Inband Loopback Interrupt Mask Register (R/W, Expanded Address = 0CH) Symbol Position Default LBM[7:0] LBM.7-0 00H Description 0 = LBI interrupt is not allowed (Default) 1 = LBI interrupt is allowed. 38 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES e-LBI: Inband Loopback Interrupt Status Register (R, Expanded Address = 0DH) Symbol Position Default LBI[7:0] LBI.7-0 00H Description 0 = (Default). Or after a read of e-LBS operation. 1 = Any transition on e-LBSn. (Corresponding e-LBMn and bit LBDE in e-LBCF are both set to 1.) e-LBGS: Inband Loopback Activate/Deactivate Code Generator Selection Register (R/W, Expanded Address = 0EH) Symbol Position Default LBGS[7:0] LBGS.7-0 00H Description 0 = Activate Code Generator is selected in Transmitter n. (Default) 1 = Deactivate Code Generator is selected in Transmitter n. e-LBGE: Inband Loopback Activate/Deactivate Code Generator Enable Register (R/W, Expanded Address = 0FH) Symbol Position Default LBGE[7:0] LBGE.7-0 00H Description 0 = Activate/Deactivate Code Generator for inband loopback is disabled in Transmitter n. (Default) 1 = Activate/Deactivate Code Generator for inband loopback is enabled in Transmitter n. 39 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT 4 IEEE STD 1149.1 JTAG TEST ACCESS PORT The JTAG boundary scan registers includes BSR (Boundary Scan Register), IDR (Device Identification Register), BR (Bypass Register) and IR (Instruction Register). These will be described in the following pages. Refer to Figure-25 for architecture. The IDT82V2048 supports the digital Boundary Scan Specification as described in the IEEE 1149.1 standards. 4.1 JTAG INSTRUCTIONS AND INSTRUCTION REGISTER (IR) The boundary scan architecture consists of data and instruction registers plus a Test Access Port (TAP) controller. Control of the TAP is achieved through signals applied to the TMS and TCK pins. Data is shifted into the registers via the TDI pin, and shifted out of the registers via the TDO pin. JTAG test data are clocked at a rate determined by JTAG test clock. Digital output pins INDUSTRIAL TEMPERATURE RANGES The IR with instruction decode block is used to select the test to be executed or the data register to be accessed or both. The instructions are shifted in LSB first to this 3-bit register. See Table-19 Instruction Register Description on page 41 for details of the codes and the instructions related. Digital input pins parallel latched output BSR (Boundary Scan Register) MUX IDR (Device Identification Register) TDI MUX BR (Bypass Register) IR (Instruction Register) Control TMS TRST TAP (Test Access Port) Controller Select High-Z Enable TCK Figure-25 JTAG Architecture 40 TDO IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES Table-19 Instruction Register Description IR Code Instruction Comments Extest The external test instruction allows testing of the interconnection to other devices. When the current instruction is the EXTEST instruction, the boundary scan register is placed between TDI and TDO. The signal on the input pins can be sampled by loading the boundary scan register using the Capture-DR state. The sampled values can then be viewed by shifting the boundary scan register using the Shift-DR state. The signal on the output pins can be controlled by loading patterns shifted in through input TDI into the boundary scan register using the Update-DR state. 100 Sample/Preload The sample instruction samples all the device inputs and outputs. For this instruction, the boundary scan register is placed between TDI and TDO. The normal path between IDT82V2048 logic and the I/O pins is maintained. Primary device inputs and outputs can be sampled by loading the boundary scan register using the Capture-DR state. The sampled values can then be viewed by shifting the boundary scan register using the Shift-DR state. 110 Idcode The identification instruction is used to connect the identification register between TDI and TDO. The device's identification code can then be shifted out using the Shift-DR state. 111 Bypass The bypass instruction shifts data from input TDI to output TDO with one TCK clock period delay. The instruction is used to bypass the device. 000 4.2.2 Table-20 Device Identification Register Description 4.2 Bit No. Comments 0 Set to ‘1’ 1~11 Producer Number 12~27 Part Number 28~31 Device Revision BYPASS REGISTER (BR) The BR consists of a single bit. It can provide a serial path between the TDI input and TDO output, bypassing the BSR to reduce test access times. 4.2.3 BOUNDARY SCAN REGISTER (BSR) The BSR can apply and read test patterns in parallel to or from all the digital I/O pins. The BSR is a 98 bits long shift register and is initialized and read using the instruction EXTEST or SAMPLE/PRELOAD. Each pin is related to one or more bits in the BSR. Please refer to Table-21 for details of BSR bits and their functions. JTAG DATA REGISTER 4.2.1 DEVICE IDENTIFICATION REGISTER (IDR) The IDR can be set to define the producer number, part number and the device revision, which can be used to verify the proper version or revision number that has been used in the system under test. The IDR is 32 bits long and is partitioned as in Table-20. Data from the IDR is shifted out to TDO LSB first. Table-21 Boundary Scan Register Description Bit No. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Bit Symbol POUT0 PIN0 POUT1 PIN1 POUT2 PIN2 POUT3 PIN3 POUT4 PIN4 POUT5 PIN5 POUT6 PIN6 POUT7 PIN7 Pin Signal LP0 LP0 LP1 LP1 LP2 LP2 LP3 LP3 LP4 LP4 LP5 LP5 LP6 LP6 LP7 LP7 Type I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O Comments 41 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES Table-21 Boundary Scan Register Description (Continued) Bit No. Bit Symbol Pin Signal Type 16 PIOS N/A - 17 18 19 20 21 22 TCLK1 TDP1 TDN1 RCLK1 RDP1 RDN1 TCLK1 TDP1 TDN1 RCLK1 RDP1 RDN1 I I I O O O 23 HZEN1 N/A - 24 25 26 27 28 29 30 LOS1 TCLK0 TDP0 TDN0 RCLK0 RDP0 RDN0 LOS1 TCLK0 TDP0 TDN0 RCLK0 RDP0 RDN0 O I I I O O O 31 HZEN0 N/A - 32 33 34 35 36 LOS0 MODE1 LOS3 RDN3 RDP3 LOS0 MODE1 LOS3 RDN3 RDP3 O I O O O 37 HZEN3 N/A - 38 39 40 41 42 43 44 RCLK3 TDN3 TDP3 TCLK3 LOS2 RDN2 RDP2 RCLK3 TDN3 TDP3 TCLK3 LOS2 RDN2 RDP2 O I I I O O O 45 HZEN2 N/A - 46 47 48 49 50 51 RCLK2 TDN2 TDP2 TCLK2 INT ACK RCLK2 TDN2 TDP2 TCLK2 INT ACK O I I I O O 52 SDORDYS N/A - 53 54 55 56 WRB RDB ALE CSB DS R/W ALE CS I I I I Comments Controls pins LP[7:0]. When ‘0’, the pins are configured as outputs. The output values to the pins are set in POUT 7~0. When ‘1’, the pins are high-Z. The input values to the pins are read in PIN 7~0. Controls pin RDP1, RDN1 and RCLK1. When ‘0’, the outputs are enabled on the pins. When ‘1’, the pins are high-Z. Controls pin RDP0, RDN0 and RCLK0. When ‘0’, the outputs are enabled on the pins. When ‘1’, the pins are high-Z. Controls pin RDP3, RDN3 and RCLK3. When ‘0’, the outputs are enabled on the pins. When ‘1’, the pins are high-Z. Controls pin RDP2, RDN2 and RCLK2. When ‘0’, the outputs are enabled on the pins. When ‘1’, the pins are high-Z. Control pin ACK. When ‘0’, the output is enabled on pin ACK. When ‘1’, the pin is high-Z. 42 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES Table-21 Boundary Scan Register Description (Continued) Bit No. 57 58 59 60 61 62 63 Bit Symbol MODE0 TCLK5 TDP5 TDN5 RCLK5 RDP5 RDN5 Pin Signal MODE0 TCLK5 TDP5 TDN5 RCLK5 RDP5 RDN5 Type I I I I O O O 64 HZEN5 N/A - 65 66 67 68 69 70 71 LOS5 TCLK4 TDP4 TDN4 RCLK4 RDP4 RDN4 LOS5 TCLK4 TDP4 TDN4 RCLK4 RDP4 RDN4 O I I I O O O 72 HZEN4 N/A - 73 74 75 76 77 78 LOS4 OE CLKE LOS7 RDN7 RDP7 LOS4 OE CLKE LOS7 RDN7 RDP7 O I I O O O 79 HZEN7 N/A - 80 81 82 83 84 85 86 RCLK7 TDN7 TDP7 TCLK7 LOS6 RDN6 RDP6 RCLK7 TDN7 TDP7 TCLK7 LOS6 RDN6 RDP6 O I I I O O O 87 HZEN6 N/A - 88 89 90 91 92 93 94 95 96 97 98 RCLK6 TDN6 TDP6 TCLK6 MCLK MODE2 A4 A3 A2 A1 A0 RCLK6 TDN6 TDP6 TCLK6 MCLK MODE2 A4 A3 A2 A1 A0 O I I I I I I I I I I Comments Controls pin RDP5, RDN5 and RCLK5. When ‘0’, the outputs are enabled on the pins. When ‘1’, the pins are high-Z. Controls pin RDP4, RDN4 and RCLK4. When ‘0’, the outputs are enabled on the pins. When ‘1’, the pins are high-Z. Controls pin RDP7, RDN7 and RCLK7. When ‘0’, the outputs are enabled on the pins. When ‘1’, the pins are high-Z. Controls pin RDP6, RDN6 and RCLK6. When ‘0’, the outputs are enabled on the pins. When ‘1’, the pins are high-Z. 43 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT 4.3 TEST ACCESS PORT CONTROLLER INDUSTRIAL TEMPERATURE RANGES instruction registers. The value shown next to each state transition in this figure states the value present at TMS at each rising edge of TCK. Refer to Table-22 for details of the state description. The TAP controller is a 16-state synchronous state machine. Figure26 shows its state diagram A description of each state follows. Note that the figure contains two main branches to access either the data or Table-22 TAP Controller State Description State Description Test Logic Reset In this state, the test logic is disabled. The device is set to normal operation. During initialization, the device initializes the instruction register with the IDCODE instruction. Regardless of the original state of the controller, the controller enters the Test-Logic-Reset state when the TMS input is held high for at least 5 rising edges of TCK. The controller remains in this state while TMS is high. The device processor automatically enters this state at power-up. Run-Test/Idle This is a controller state between scan operations. Once in this state, the controller remains in the state as long as TMS is held low. The instruction register and all test data registers retain their previous state. When TMS is high and a rising edge is applied to TCK, the controller moves to the Select-DR state. Select-DR-Scan This is a temporary controller state and the instruction does not change in this state. The test data register selected by the current instruction retains its previous state. If TMS is held low and a rising edge is applied to TCK when in this state, the controller moves into the Capture-DR state and a scan sequence for the selected test data register is initiated. If TMS is held high and a rising edge applied to TCK, the controller moves to the Select-IR-Scan state. Capture-DR In this state, the Boundary Scan Register captures input pin data if the current instruction is EXTEST or SAMPLE/PRELOAD. The instruction does not change in this state. The other test data registers, which do not have parallel input, are not changed. When the TAP controller is in this state and a rising edge is applied to TCK, the controller enters the Exit1-DR state if TMS is high or the Shift-DR state if TMS is low. Shift-DR In this controller state, the test data register connected between TDI and TDO as a result of the current instruction shifts data on stage toward its serial output on each rising edge of TCK. The instruction does not change in this state. When the TAP controller is in this state and a rising edge is applied to TCK, the controller enters the Exit1-DR state if TMS is high or remains in the Shift-DR state if TMS is low. Exit1-DR This is a temporary state. While in this state, if TMS is held high, a rising edge applied to TCK causes the controller to enter the Update-DR state, which terminates the scanning process. If TMS is held low and a rising edge is applied to TCK, the controller enters the Pause-DR state. The test data register selected by the current instruction retains its previous value and the instruction does not change during this state. Pause-DR The pause state allows the test controller to temporarily halt the shifting of data through the test data register in the serial path between TDI and TDO. For example, this state could be used to allow the tester to reload its pin memory from disk during application of a long test sequence. The test data register selected by the current instruction retains its previous value and the instruction does not change during this state. The controller remains in this state as long as TMS is low. When TMS goes high and a rising edge is applied to TCK, the controller moves to the Exit2-DR state. Exit2-DR This is a temporary state. While in this state, if TMS is held high, a rising edge applied to TCK causes the controller to enter the Update-DR state, which terminates the scanning process. If TMS is held low and a rising edge is applied to TCK, the controller enters the Shift-DR state. The test data register selected by the current instruction retains its previous value and the instruction does not change during this state. Update-DR The Boundary Scan Register is provided with a latched parallel output to prevent changes while data is shifted in response to the EXTEST and SAMPLE/PRELOAD instructions. When the TAP controller is in this state and the Boundary Scan Register is selected, data is latched into the parallel output of this register from the shift-register path on the falling edge of TCK. The data held at the latched parallel output changes only in this state. All shift-register stages in the test data register selected by the current instruction retain their previous value and the instruction does not change during this state. Select-IR-Scan This is a temporary controller state. The test data register selected by the current instruction retains its previous state. If TMS is held low and a rising edge is applied to TCK when in this state, the controller moves into the Capture-IR state, and a scan sequence for the instruction register is initiated. If TMS is held high and a rising edge is applied to TCK, the controller moves to the Test-Logic-Reset state. The instruction does not change during this state. Capture-IR In this controller state, the shift register contained in the instruction register loads a fixed value of ‘100’ on the rising edge of TCK. This supports fault-isolation of the board-level serial test data path. Data registers selected by the current instruction retain their value and the instruction does not change during this state. When the controller is in this state and a rising edge is applied to TCK, the controller enters the Exit1IR state if TMS is held high, or the Shift-IR state if TMS is held low. Shift-IR In this state, the shift register contained in the instruction register is connected between TDI and TDO and shifts data one stage towards its serial output on each rising edge of TCK. The test data register selected by the current instruction retains its previous value and the instruction does not change during this state. When the controller is in this state and a rising edge is applied to TCK, the controller enters the Exit1-IR state if TMS is held high, or remains in the Shift-IR state if TMS is held low. 44 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES Table-22 TAP Controller State Description (Continued) State Description Exit1-IR This is a temporary state. While in this state, if TMS is held high, a rising edge applied to TCK causes the controller to enter the Update-IR state, which terminates the scanning process. If TMS is held low and a rising edge is applied to TCK, the controller enters the Pause-IR state. The test data register selected by the current instruction retains its previous value and the instruction does not change during this state. Pause-IR The pause state allows the test controller to temporarily halt the shifting of data through the instruction register. The test data register selected by the current instruction retains its previous value and the instruction does not change during this state. The controller remains in this state as long as TMS is low. When TMS goes high and a rising edge is applied to TCK, the controller moves to the Exit2-IR state. Exit2-IR This is a temporary state. While in this state, if TMS is held high, a rising edge applied to TCK causes the controller to enter the Update-IR state, which terminates the scanning process. If TMS is held low and a rising edge is applied to TCK, the controller enters the Shift-IR state. The test data register selected by the current instruction retains its previous value and the instruction does not change during this state. Update-IR The instruction shifted into the instruction register is latched into the parallel output from the shift-register path on the falling edge of TCK. When the new instruction has been latched, it becomes the current instruction. The test data registers selected by the current instruction retain their previous value. 1 Test-logic Reset 0 0 Run Test/Idle 1 Select-DR 1 Select-IR 0 1 0 1 Capture-DR Capture-IR 0 0 0 0 Shift-DR Shift-IR 1 1 1 Exit1-DR 1 Exit1-IR 0 0 0 0 Pause-DR Pause-IR 1 0 1 0 Exit2-DR Exit2-IR 1 1 Update-DR 0 1 Figure-26 JTAG State Diagram 45 1 Update-IR 1 0 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES ABSOLUTE MAXIMUM RATING Symbol VDDA, VDDD VDDIO0, VDDIO1 VDDT0-7 Min Max Unit Core Power Supply Parameter -0.5 4.0 V I/O Power Supply -0.5 4.0 V Transmit Power Supply -0.5 7.0 V GND-0.5 5.5 V GND-0.5 VDDA+ 0.5 VDDD+ 0.5 V V 100 mA Input Voltage, any digital pin Vin Input Voltage(1), RTIPn pins and RRINGn pins ESD Voltage, any pin(2) Transient Latch-up Current, any pin Iin 2000 Input Current, any digital pin(3) V -10 DC Input Current, any analog pin(3) Pd 10 mA 100 mA Maximum Power Dissipation in package 1.6 W Tc Case Temperature 120 C Ts Storage Temperature +150 C -65 CAUTION: Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 1. Referenced to ground 2. Human body model 3. Constant input current RECOMMENDED OPERATING CONDITIONS Symbol Min Typ Max Unit Core Power Supply 3.13 3.3 3.47 V I/O Power Supply 3.13 3.3 3.47 V 3.3 V 3.13 3.3 3.47 V 5V 4.75 5.0 5.25 V -40 25 25 85 C  Average Core Power Supply Current(2) 55 65 mA IVDDIO I/O Power Supply Current(3) 15 25 mA IVDDT Average transmitter power supply current, T1 mode(2),(4),(5) 50% ones density data: 100% ones density data: 230 440 mA mA VDDA, VDDD VDDIO (1) VDDT TA RL IVDD Parameter Transmitter Supply Ambient Operating Temperature Output load at TTIPn pins and TRINGn pins 1. T1 is only 5V VDDT. 2. Maximum power and current consumption over the full operating temperature and power supply voltage range. Includes all channels. 3. Digital output is driving 50 pF load, digital input is within 10% of the supply rails. 4. T1 maximum values measured with maximum cable length (TS[2:0] = 111). Typical values measured with typical cable length (TS[2:0] = 101). 5. Power consumption includes power absorbed by line load and external transmitter components. 46 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES POWER CONSUMPTION Symbol Parameter TS[2:0] Min Typ Max(1)(2) Unit 000 000 - 662 1100 1177 mW mW 000 000 - 576 930 992 mW mW E1, 3.3 V, 75 Load 50% ones density data: 100% ones density data: E1, 3.3 V, 120 Load 50% ones density data: 100% ones density data: E1, 5.0 V, 75 Load 50% ones density data: 100% ones density data: E1, 5.0 V, 120 Load 50% ones density data: 100% ones density data: 000 000 - 910 1585 1690 mW mW 000 000 - 785 1315 1410 mW mW T1, 5.0 V, 100 Load (3) 50% ones density data: 100% ones density data: 101 111 - 1185 2395 2670 mW mW 1. Maximum power and current consumption over the full operating temperature and power supply voltage range. Includes all channels. 2. Power consumption includes power absorbed by line load and external transmitter components. 3. T1 maximum values measured with maximum cable length (TS[2:0] = 111). Typical values measured with typical cable length (TS[2:0] = 101). DC CHARACTERISTICS Symbol VIL Parameter Min Typ All other digital inputs pins Input Mid Level Voltage 1 --3 MODE2, JAS and LPn pins VIH 1. VDDIO+0.2 MODE2, JAS and LPn pins 2 --- VDDIO+ 0.2 3 All other digital inputs pins 2.0 Output Low level Voltage(1) (Iout = 1.6 mA) VOH Output High level Voltage(1) (Iout = 400 A) Analog Input Quiescent Voltage (RTIPn/RRINGn pin while floating) Input High Level Current (MODE2, JAS and LPn pin) Input Low Level Current (MODE2, JAS and LPn pin) Input Leakage Current TMS, TDI and TRST pins All other digital input pins High-Z Leakage Current Output High-Z on TTIPn pins and TRINGn pins IZL ZOH 1 --- VDDIO-0.2 3 V 0.8 V 1 --- VDDIO 2 2 --- VDDIO-0.2 3 V Input High Voltage VOL VMA IH IL II Unit Input Low Level Voltage MODE2, JAS and LPn pins VIM Max Output drivers will output CMOS logic levels into CMOS loads. 47 V 2.4 1.33 -10 -10 150 1.4 0.4 V V VDDIO V 1.47 50 50 V A A 50 10 10 A A A k IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES TRANSMITTER CHARACTERISTICS Symbol Vo-p VO-S Parameter Min Typ Max Unit Output Pulse Amplitudes E1, 75  load E1, 120  load T1, 100  load 2.14 2.7 2.4 2.37 3.0 3.0 2.6 3.3 3.6 V V V Zero (space) Level E1, 75  load E1, 120  load T1, 100  load -0.237 -0.3 -0.15 0.237 0.3 0.15 V V V -1 +1 % 200 mV 256 362 ns ns (1) Transmit Amplitude Variation with supply Difference between pulse sequences for 17 consecutive pulses TPW RTX Output Pulse Width at 50% of nominal amplitude E1: T1: 232 338 Ratio of the amplitudes of Positive and Negative Pulses at the center of the pulse interval 0.95 Transmit Return Loss E1, 120  T1 (VDDT = 5 V) Td 51 kHz – 102 kHz 102 kHz – 2.048 MHz 2.048 MHz – 3.072 MHz 51 kHz – 102 kHz 102 kHz – 2.048 MHz 2.048 MHz – 3.072 MHz 51 kHz – 102 kHz 102 kHz – 2.048 MHz 2.048 MHz – 3.072 MHz 15 15 15 15 15 15 15 15 15 dB dB dB dB dB dB dB dB dB Intrinsic Transmit Jitter (TCLK is jitter free, JA enabled) E1: 20 Hz – 100 kHz 0.050 U.I. T1: 10 Hz – 8 kHz 8 kHz – 40 kHz 10 Hz – 40 kHz Wide Band 0.020 0.025 0.025 0.050 U.I.p-p U.I.p-p U.I.p-p U.I.p-p 8 3 U.I. U.I. 180 mAp Transmit Path Delay (JA is disabled) Single Rail Dual Rail ISC 1.05 (2) E1, 75  JTXP-P 244 350 Line Short Circuit Current (3) 1. E1: measured at the line output ports; T1: measured at the DSX 2. Test at IDT82V2048 evaluation board 3. Measured on device, between TTIPn and TRINGn 48 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES RECEIVER CHARACTERISTICS Symbol ATT IA Parameter Min Typ Permissible Cable Attenuation (E1: @ 1024 kHz, T1: @ 772 kHz) 0.1 Input Amplitude Max Unit 15 dB 0.9 Vp SIR Signal to Interference Ratio Margin SRE Data Decision Threshold (refer to peak input voltage) 50 % Data Slicer Threshold 150 mV -15 (1) dB (2) Analog Loss Of Signal Declare/Clear: 120/150 Allowable consecutive zeros before LOS E1, G.775: E1, ETSI 300 233: T1, T1.231-1993 Peak to Peak Intrinsic Receive Jitter (JA disabled) E1 (wide band): T1 (wide band): JTRX Jitter Tolerance 12.5 mVp % ones 0.0625 0.0625 U.I. U.I. E1: 1 Hz – 20 Hz 20 Hz – 2.4 kHz 18 kHz – 100 kHz 18.0 1.5 0.2 U.I. U.I. U.I. T1: 0.1 Hz – 1 Hz 4.9 Hz – 300 Hz 10 kHz – 100 kHz 138.0 28.0 0.4 U.I. U.I. U.I. ZDM Receiver Differential Input Impedance 120 ZCM Receiver Common Mode Input Impedance to GND 10 k RRX Receive Return Loss 51 kHz – 102 kHz 102 kHz – 2.048 MHz 2.048 MHz – 3.072 MHz 20 20 20 dB dB dB Receive Path Delay Dual Rail Single Rail 3 8 1. E1: per G.703, O.151 @ 6 dB cable attenuation. T1: @ 655 ft. of 22 ABAM cable 2. 280/350 32 2048 175 LOS Reset Clock Recovery Mode JRXp-p 200/250 Measured on device, between RTIP and RRING, all ones signal. 49 k U.I. U.I. IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES JITTER ATTENUATOR CHARACTERISTICS Symbol f-3dB Parameter Min Typ Max Unit Jitter Transfer Function Corner Frequency (–3 dB) Host mode E1, 32/64 bit FIFO JABW = 0: JABW = 1: T1, 32/64 bit FIFO JABW = 0: JABW = 1: Hardware mode E1 T1 1.7 6.6 Hz Hz 2.5 5 Hz Hz 1.7 2.5 Hz Hz Jitter Attenuator td E1(1): @ 3 Hz @ 40 Hz @ 400 Hz @ 100 kHz -0.5 -0.5 +19.5 +19.5 dB dB dB dB T1(2): @ 1 Hz @ 20 Hz @ 1 kHz @ 1.4 kHz @ 70 kHz 0 0 +33.3 40 40 dB dB dB dB dB Jitter Attenuator Latency Delay 32 bit FIFO: 64 bit FIFO: Input Jitter Tolerance before FIFO Overflow Or Underflow 32 bit FIFO: 64 bit FIFO: U.I. U.I. 28 56 U.I. U.I. 0.11 Output Jitter in Remote Loopback(3) 1. Per G.736, see Figure-43 on page 61. 2. 16 32 Per AT&T pub.62411, see Figure-44 on page 61. 3. Per ETSI CTR12/13 output jitter. 50 U.I. IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES TRANSCEIVER TIMING CHARACTERISTICS Symbol Parameter Min Typ Max Unit MCLK Frequency 2.048 1.544 E1: T1: MHz MHz MCLK Tolerance -100 100 ppm MCLK Duty Cycle 40 60 % Transmit Path TCLK Frequency 2.048 1.544 E1: T1: MHz MHz TCLK Tolerance -50 +50 90 ppm TCLK Duty Cycle 10 t1 Transmit Data Setup Time 40 ns t2 Transmit Data Hold Time 40 ns Delay time of OE low to driver High-Z 40 Delay time of TCLK low to driver High-Z 44 % 1 µs 48 µs Receive Path Clock Recovery Capture Range(1) E1:  80  180 T1: RCLK Duty Cycle(2) t4 488 648 519 689 ns ns 203 259 244 324 285 389 ns ns 203 259 244 324 285 389 ns ns 30 ns 200 200 244 324 ns ns 200 200 244 324 ns ns 200 300 244 324 ns ns Receive Data Hold Time E1: T1: RDPn/RDNn Pulse Width (MCLK = High)(4) E1: T1: 1. 457 607 Receive Data Setup Time E1: T1: t9 ppm % 5 Rise/Fall Time(3) t8 60 RCLK Pulse Width High Time E1: T1: t7 50 RCLK Pulse Width Low Time E1: T1: t6 40 RCLK Pulse Width(2) E1: T1: t5 ppm Relative to nominal frequency, MCLK = 100 ppm 2. RCLK duty cycle widths will vary depending on extent of received pulse jitter displacement. Maximum and minimum RCLK duty cycles are for worst case jitter conditions (0.2 UI displacement for E1 per ITU G.823). 3. For all digital outputs. C load = 15 pF 4. Clock recovery is disabled in this mode. 51 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES TCLKn t1 t2 TDn/TDPn BPVIn/TDNn Figure-27 Transmit System Interface Timing t4 RCLKn t6 t5 t7 t8 RDn/RDPn (CLKE = 1) CVn/RDNn t7 RDn/RDPn (CLKE = 0) CVn/RDNn Figure-28 Receive System Interface Timing 52 t8 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES JTAG TIMING CHARACTERISTICS Symbol Parameter Min Typ Max Unit t1 TCK Period 200 ns t2 TMS to TCK setup Time TDI to TCK Setup Time 50 ns t3 TCK to TMS Hold Time TCK to TDI Hold Time 50 ns t4 TCK to TDO Delay Time 100 t1 TCK t2 t3 TMS TDI t4 TDO Figure-29 JTAG Interface Timing 53 ns Comments IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES PARALLEL HOST INTERFACE TIMING CHARACTERISTICS INTEL MODE READ TIMING CHARACTERISTICS Symbol t1 t2 t3 t4 t5 t6 t7 t8 t9 t10 t11 t12 t13 t14 t15 t16 1. Parameter Min Active RD Pulse Width Active CS to Active RD Setup Time Inactive RD to Inactive CS Hold Time Valid Address to Inactive ALE Setup Time (in Multiplexed Mode) Invalid RD to Address Hold Time (in Non-Multiplexed Mode) Active RD to Data Output Enable Time Inactive RD to Data High-Z Delay Time Active CS to RDY delay time Inactive CS to RDY High-Z Delay Time Inactive RD to Inactive INT Delay Time Address Latch Enable Pulse Width (in Multiplexed Mode) Address Latch Enable to RD Setup Time (in Multiplexed Mode) Address Setup time to Valid Data Time (in Non-Multiplexed Mode) Inactive RD to Active RDY Delay Time Active RD to Active RDY Delay Time Inactive ALE to Address Hold Time (in Multiplexed Mode) The t1 is determined by the start time of the valid data when the RDY signal is not used. 54 90 0 0 5 0 7.5 7.5 6 6 10 0 18 10 30 5 Typ Max 15 15 12 12 20 32 15 85 Unit Comments ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns (1) IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES t2 CS t3 t1 RD ALE(=1) t13 t5 ADDRESS A[4:0] t6 t7 DATA OUT D[7:0] t14 t8 t9 RDY t15 t10 INT Figure-30 Non-Multiplexed Intel Mode Read Timing t2 CS t3 t1 RD t11 t12 ALE t13 t16 t4 AD[7:0] t6 t7 ADDRESS DATA OUT t14 t8 t9 RDY t15 INT Figure-31 Multiplexed Intel Mode Read Timing 55 t10 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES INTEL MODE WRITE TIMING CHARACTERISTICS Symbol t1 t2 t3 t4 t5 t6 t7 t8 t9 t10 t11 t12 t13 t14 t15 Parameter Min Active WR Pulse Width Active CS to Active WR Setup Time Inactive WR to Inactive CS Hold Time Valid Address to Latch Enable Setup Time (in Multiplexed Mode) Invalid WR to Address Hold Time (in Non-Multiplexed Mode) Valid Data to Inactive WR Setup Time Inactive WR to Data Hold Time Active CS to Inactive RDY Delay Time Active WR to Active RDY Delay Time Inactive WR to Inactive RDY Delay Time Invalid CS to RDY High-Z Delay Time Address Latch Enable Pulse Width (in Multiplexed Mode) Inactive ALE to WR Setup Time (in Multiplexed Mode) Inactive ALE to Address hold time (in Multiplexed Mode) Address setup time to Inactive WR time (in Non-Multiplexed Mode) Typ Max 90 0 0 5 2 5 10 6 30 10 6 10 0 5 5 12 85 15 12 Unit Comments ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns (1) 1. The t1 can be 15 ns when RDY signal is not used. CS t2 t1 t3 WR ALE(=1) t15 t5 ADDRESS A[4:0] t7 t6 WRITE DATA D[7:0] t10 t8 t11 RDY t9 Figure-32 Non-Multiplexed Intel Mode Write Timing t2 t3 CS t1 WR t12 t13 ALE t14 t4 AD[7:0] t6 ADDRESS t8 t7 WRITE DATA t11 t9 RDY t10 Figure-33 Multiplexed Intel Mode Write Timing 56 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES MOTOROLA MODE READ TIMING CHARACTERISTICS Symbol t1 t2 t3 t4 t5 t6 t7 t8 t9 t10 t11 t12 t13 t14 Parameter Min Active DS Pulse Width Active CS to Active DS Setup Time Inactive DS to Inactive CS Hold Time Valid R/W to Active DS Setup Time Inactive DS to R/W Hold Time Valid Address to Active DS Setup Time (in Non-Multiplexed Mode) Active DS to Address Hold Time (in Non-Multiplexed Mode) Active DS to Data Valid Delay Time (in Non-Multiplexed Mode) Active DS to Data Output Enable Time Inactive DS to Data High-Z Delay Time Active DS to Active ACK Delay Time Inactive DS to Inactive ACK Delay Time Inactive DS to Invalid INT Delay Time Active AS to Active DS Setup Time (in Multiplexed Mode) Typ Max 90 0 0 0 0.5 5 10 20 7.5 7.5 30 10 35 15 15 85 15 20 5 1. The t1 is determined by the start time of the valid data when the ACK signal is not used. CS t4 t5 R/W t1 t2 t3 DS ALE(=1) t6 t7 ADDRESS A[4:0] t10 t8 DATA OUT D[7:0] t9 ACK t12 t11 t13 INT Figure-34 Non-Multiplexed Motorola Mode Read Timing CS t2 t3 R/W t1 t4 t5 DS t14 AS t6 AD[7:0] t7 ADDRESS t8 t9 t10 DATA OUT t11 t12 ACK t13 INT Figure-35 Multiplexed Motorola Mode Read Timing 57 Unit Comments ns ns ns ns ns ns ns ns ns ns ns ns ns ns (1) IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES MOTOROLA MODE WRITE TIMING CHARACTERISTICS Symbol t1 t2 t3 t4 t5 t6 t7 t8 t9 t10 t11 t12 t13 Parameter Min Active DS Pulse Width Active CS to Active DS Setup Time Inactive DS to Inactive CS Hold Time Valid R/W to Active DS Setup Time Inactive DS to R/W Hold Time Valid Address to Active DS Setup Time (in Non-Multiplexed Mode) Valid DS to Address Hold Time (in Non-Multiplexed Mode) Valid Data to Inactive DS Setup Time Inactive DS to Data Hold Time Active DS to Active ACK Delay Time Inactive DS to Inactive ACK Delay Time Active AS to Active DS (in Multiplexed Mode) Inactive DS to Inactive AS Hold Time ( in Multiplexed Mode) Typ Max 90 0 0 10 0 10 10 5 10 30 10 0 15 85 15 1. The t1 can be 15ns when the ACK signal is not used. CS t4 t5 R/W t1 t2 t3 DS ALE(=1) t6 t7 ADDRESS A[4:0] t8 t9 WRITE DATA t11 D[7:0] t10 ACK Figure-36 Non-Multiplexed Motorola Mode Write Timing CS t2 t3 R/W t4 t1 t5 DS t12 t13 AS t6 AD[7:0] t8 t7 ADDRESS t9 WRITE DATA t10 ACK Figure-37 Multiplexed Motorola Mode Writing Timing 58 t11 Unit Comments ns ns ns ns ns ns ns ns ns ns ns ns ns (1) IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES SERIAL HOST INTERFACE TIMING CHARACTERISTICS Symbol t1 t2 t3 t4 t5 t6 t7 t8 t9 t10 t11 Parameter Min SCLK High Time SCLK Low Time Active CS to SCLK Setup Time Last SCLK Hold Time to Inactive CS Time CS Idle Time SDI to SCLK Setup Time SCLK to SDI Hold Time Rise/Fall Time (any pin) SCLK Rise and Fall Time SCLK to SDO Valid Delay Time SCLK Falling Edge to SDO High-Z Hold Time (CLKE = 0) or CS Rising Edge to SDO High-Z Hold Time (CLKE = 1) Typ Max Unit Comments 100 50 35 ns ns ns ns ns ns ns ns ns ns Load = 50 pF 25 25 10 50 50 5 5 25 100 ns CS t3 t1 t4 t2 t5 SCLK t6 SDI t7 t7 LSB MSB LSB CONTROL BYTE DATA BYTE Figure-38 Serial Interface Write Timing 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SCLK t10 t4 CS SDO 0 1 2 3 4 5 t11 7 6 Figure-39 Serial Interface Read Timing with CLKE = 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SCLK CS t4 t10 t11 SDO 0 1 2 3 4 Figure-40 Serial Interface Read Timing with CLKE = 1 59 5 6 7 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES JITTER TOLERANCE PERFORMANCE E1 JITTER TOLERANCE PERFORMANCE 1 10 3 100 G.823 IDT82V2048 Jitter (UI) 18 UI @ 1.8 Hz 10 1.5 UI @ 20 Hz 1 1.5 UI @ 2.4 kHz 0.2 UI @ 18 kHz 0.1 1 10 100 1 10 3 4 1 10 5 1 10 Frequency (Hz) Test condition: PRBS 2^15-1; Line code rule HDB3 is used. Figure-41 E1 Jitter Tolerance Performance T1 JITTER TOLERANCE PERFORMANCE 1 10 3 AT&T62411 IDT82V2048 Jitter (UI) 100 28 UI @ 4.9 Hz 28 UI @ 300 Hz 10 1 0.4 UI @ 10kHz 0.1 1 10 100 3 1 10 Frequency (Hz) Test condition: QRSS; Line code rule B8ZS is used. Figure-42 T1 Jitter Tolerance Performance 60 1 10 4 1 10 5 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES JITTER TRANSFER PERFORMANCE E1 JITTER TRANSFER PERFORMANCE 0.5 dB @ 3 Hz 0.5 dB @ 40 Hz 0 -19.5 dB @ 400 Hz -20 -19.5 dB @ 20 kHz f3dB = 6.5 Hz Gain (dB) G.736 IDT82V2048 -40 -60 f3dB = 1.7 Hz 1 10 1 10 3 100 1 104 1 105 Frequency (Hz) Test condition: PRBS 2^15-1; Line code rule HDB3 is used. Figure-43 E1 Jitter Transfer Performance T1 JITTER TRANSFER PERFORMANCE 0 dB @ 1 Hz 0 -6 dB @ 2 Hz AT&T62411 GR-253-CORE IDT82V2048 0.5 dB @ 350 Hz 0 dB @ 20 Hz f3dB = 2.5 Hz Gain (dB) TR-TSY-000009 -20 0.1 dB @ 40 Hz -33.3 dB @ 1 kHz -33.7 dB @ 2.5 kHz -40 dB @ 1.4 kHz f3dB = 5 Hz -40 -40 dB @ 70 kHz -49.2 dB @ 15 kHz -60 dB @ 57 Hz -60 1 10 100 1 103 Frequency (Hz) Test condition: QRSS; Line code rule B8ZS is used. Figure-44 T1 Jitter Transfer Performance 61 1 104 1 105 IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT INDUSTRIAL TEMPERATURE RANGES ORDERING INFORMATION IDT XXXXXXXX Device Type XX Package X Process/ Temperature Range Blank BBG DAG Industrial (-40°C to +85°C) Green Plastic Ball Grid Array (PBGA, BBG160) Green Thin Quad Flatpack (TQFP, DAG144) 82V2048 T1/E1 Short Haul LIU DATASHEET DOCUMENT HISTORY 11/04/2001 11/20/2001 11/28/2001 11/29/2001 12/05/2001 12/24/2001 01/05/2002 01/24/2002 02/21/2002 03/25/2002 04/17/2002 05/07/2002 08/27/2002 01/15/2003 12/09/2003 09/02/2004 04/12/2005 07/22/2005 03/18/2009 09/11/2009 01/21/2010 04/26/2010 07/01/2010 11/14/12 pgs. 2, 3, 11, 19 pgs. 5, 6, 12, 14, 18, 19, 27, 30, 36, 44, 45, 46, 58 pgs. 5, 27, 30, 37 pgs. 5, 12 pgs. 9 pgs.44, 45 pgs. 23, 36 pgs. 2, 3, 10, 16, 45, 46 pgs. 15,19, 47 pgs. 1, 2, 60 pgs. 20 pgs. 15, 51, 52, 55 pgs. 23, 37 pgs. 1, 61 pgs. 23 pgs. 11, 15, 19, 45, 47, 48 pgs. 1, 5, 6 to 11, 13 to 15, 19, 20, 32, 47, 48, 50, 54 to 58, 61 pgs. 10, 11, 18, 19, 45, 46, 61 pg. 19 pg. 46 pg. 9 pgs. 15, 16, 17, 18 pgs. 17 pg. 62 62 IMPORTANT NOTICE AND DISCLAIMER RENESAS ELECTRONICS CORPORATION AND ITS SUBSIDIARIES (“RENESAS”) PROVIDES TECHNICAL SPECIFICATIONS AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS. 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