73K324BL

73K324BL CCITT V.22bis,V.23,V.22,V.21,Bell 212A Single-Chip Modem w/ Integrated Hybrid Simplifying System Integration™ DATA SHEET JUNE 2008 DESCRIPTION The 73K324BL is a highly integrated single-chip modem IC which provides the functions needed to construct a V.22bis compatible modem, capable of 2400 bps full-duplex operation over dial-up lines. The 73K324BL is an enhancement of the 73K324L singlechip modem, which adds the hybrid hook switch control, and driver to the 73K324L. The 73K324BL integrates analog, digital, and switched-capacitor array functions on a single chip, offering excellent performance and a high level of functional integration in a 32-Lead PLCC package. The 73K324BL operates from a single +5 V supply for low power consumption. The 73K324BL is designed to appear to the systems designer as a microprocessor peripheral, and will easily interface with popular single-chip microprocessors (80C51 typical) for control of modem functions through its 8-bit multiplexed address/data bus or via an optional serial control bus. An ALE control simplifies address demultiplexing. Data communications normally occur through a separate serial port. (continued) FEATURES • • • • • • • • • Includes features of 73K324L single-chip modem On chip 2-wire/4-wire hybrid driver and off hook relay buffer One-chip multi-mode V.22bis/V.22/V.21/V.23 and Bell 212A compatible modem data pump FSK (300/1200 bps), DPSK (600, 1200 bps), or QAM (2400 bps) encoding Software compatible with other conductor K-Series one-chip modems Interfaces directly with standard processors (80C51 typical) Parallel or serial bus for control Selectable asynch/synch with internal buffer/debuffer and scrambler/descrambler functions All asynchronous and synchronous operating modes (internal, external, slave) (continued) Semimicro- BLOCK DIAGRAM DTMF, ANSWER, GUARD & CALLING TONE GENERATOR FSK MODULATOR OH BUFFER SCRAMBLER DI-BIT/ QUAD-BIT ENCODER FIR PULSE SHAPER QAM/ DPSK MODULATOR FILTER EQUALIZER FILTER ATTENUATOR TXA1 2W/4W HYBRID TXA2 RXA PASS BAND FILTER AGC GAIN BOOST 8-BIT µP BUS INTERFACE DIGITAL SIGNAL PROCESSOR RECEIVE FUNCTIONS FILTER A/D DEBUFFER DESCRAMBLER DI-BIT/ QUAD-BIT DECODER EQUALIZER ANTI-ALIAS FILTER FIXED DEMODULATOR TXD RXD SERIAL INTERFACE TONE DETECTION Page: 1 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET DESCRIPTION (continued) The 73K324BL is pin and software compatible with the 73K222BL and 73K224BL, allowing system upgrades and product differentiation with a single component change. The 73K324BL is designed to be a complete V.22bis compatible modem on a chip. The complete modem requires only the addition of the phone line interface, a control microprocessor, and RS-232 level converter for a typical system. Many functions were included to simplify implementation of typical modem designs. In addition to the basic 2400 bps QAM, 600/1200 bps DPSK and 300/1200 bps FSK modulator/demodulator sections, the device also includes synch/asynch converters, scrambler/descrambler, call progress tone detect, DTMF tone generator capabilities and handshake pattern detectors. Test features such as analog loop, digital loop, and remote digital loopback are supported. Internal pattern generators are also included for self-testing. FEATURES (continued) • • Adaptive equalization performance over all lines for optimum Programmable transmit attenuation (16 dB, 1 dB steps), selectable receive boost (+18 dB) Call progress, carrier, answer tone, unscrambled mark, S1, and signal quality monitors DTMF, answer, generators SCT, and guard tone • • • • Test modes available: ALB, DL, RDL, mark, space, alternating bit, S1 pattern CMOS technology for low power consumption (typically 100 mW @ 5 V) with power-down mode (15 mW @ 5 V) TTL and CMOS compatible inputs and outputs • Page: 2 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET FUNCTIONAL DESCRIPTION HYBRID AND RELAY DRIVER To make designs more cost effective and space efficient, the 73K324BL includes the 2-wire to 4-wire hybrid with sufficient drive to interface directly to the telecom coupling transformers. In addition, an off hook relay driver with 40 mA drive capability is also included to allow use of commonly available mechanical telecom relays. QAM MODULATOR/DEMODULATOR The 73K324BL encodes incoming data into quad-bits represented by 16 possible signal points with specific phase and amplitude levels. The base-band signal is then filtered to reduce intersymbol interference on the band limited telephone network. The modulator transmits this encoded data using either a 1200 Hz (originate mode) or 2400 Hz (answer mode) carrier. The demodulator, although more complex, essentially reverses this procedure while also recovering the data clock from the incoming signal. Adaptive equalization corrects for varying line conditions by automatically changing filter parameters to compensate for line characteristics. DPSK MODULATOR/DEMODULATOR The 73K324BL modulates a serial bit stream into di-bit pairs that are represented by four possible phase shifts as prescribed by the Bell 212A/V.22 standards. The base-band signal is then filtered to reduce intersymbol interference on the bandlimited 2wire PSTN line. Transmission occurs on either a 1200 Hz (originate mode) or 2400 Hz carrier (answer mode). Demodulation is the reverse of the modulation process, with the incoming analog signal eventually decoded into di-bits and converted back to a serial bit stream. The demodulator also recovers the clock, which was encoded into the analog signal during modulation. Demodulation occurs using either a 1200 Hz carrier (answer mode or ALB originate mode) or a 2400 Hz carrier (originate mode or ALB answer mode). The 73K324BL use a phase locked loop coherent demodulation technique that offers excellent performance. Adaptive equalization is also used in DPSK modes for optimum operation with varying line conditions. FSK MODULATOR/DEMODULATOR The FSK modulator produces a frequency modulated analog output signal using two discrete frequencies to represent the binary data. V.21 mode uses 980 and 1180 Hz (originate, mark and space) or 1650 and 1850 Hz (answer, mark and space) are used in V.21 mode. V.23 mode uses 1300 and 2100 Hz for the main channel and 390 and 450 Hz for the back channel. Demodulation involves detecting the received frequencies and decoding them into the appropriate binary value. The rate converter and scrambler/descrambler are automatically bypassed in the FSK modes. PASSBAND FILTERS AND EQUALIZERS High and low band filters are included to shape the amplitude and phase response of the transmit and receive signals and provide compromise delay equalization and rejection of out-of-band signals. Amplitude and phase equalization are necessary to compensate for distortion of the transmission line and to reduce intersymbol interference in the band limited receive signal. The transmit signal filtering corresponds to a 75% square root of raised Cosine frequency response characteristic. ASYNCHRONOUS MODE The asynchronous mode is used for communication with asynchronous terminals which may communicate at 600,1200, or 2400 bps +1%, -2.5% even though the modem’s output is limited to the nominal bit rate ±.01% in DPSK and QAM modes. When transmitting in this mode the serial data on the TXD input is passed through a rate converter which inserts or deletes stop bits in the serial bit stream in order to output a signal that is the nominal bit rate ±.01%. This signal is then routed to a data scrambler and into the analog modulator where quad-bit/di-bit encoding results in the output signal. Both the rate converter and scrambler can be bypassed for handshaking, and synchronous operation as selected. Received data is processed in a similar fashion except that the rate converter now acts to reinsert any deleted stop bits and output data to the terminal at no greater than the bit rate plus 1%. An incoming break signal (low through two characters) will be passed through without incorrectly inserting a stop bit. Page: 3 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET FUNCTIONAL DESCRIPTION (continued) The synch/asynch converter also has an extended Overspeed mode, which allows selection of an output overspeed range of either +1% or +2.3%. In the extended overspeed mode, stop bits are output at 7/8 rising edge of TXCLK the normal width. Both the synch/asynch rate converter and the data descrambler are automatically bypassed in the FSK modes. SYNCHRONOUS MODE Synchronous operation is possible only in the QAM or DPSK modes. Operation is similar to that of the asynchronous mode except that data must be synchronized to a provided clock and no variation in data transfer rate is allowable. Serial input data appearing at TXD must be valid on the rising edge of TXCLK. TXCLK is an internally derived 1200 or 2400 Hz signal in internal mode and is connected internally to the RXCLK pin in slave mode. Receive data at the RXD pin is clocked out on the falling edge of RXCLK. The asynch/synch converter is bypassed when synchronous mode is selected and data is transmitted at the same rate as it is input. PARALLEL BUS CONTROL INTERFACE MODE Eight 8-bit registers are provided for control, option select, and status monitoring. These registers are addressed with the AD0, AD1, and AD2 multiplexed address lines (latched by ALE) and appear to a control microprocessor as seven consecutive memory locations. Six control registers are read/write memory. The detect and ID registers are read only and cannot be modified except by modem response to monitored parameters. SERIAL CONTROL INTERFACE MODE The serial Command mode allows access to the 73K324BL control and status registers via a serial control port. In this mode the AD0, AD1, and AD2 lines provide register addresses for data passed through the AD7 (DATA) pin under control of the RD and WR lines. A read operation is initiated when the RD line is taken low. The next eight cycles of EXCLK will then transfer out eight bits of the selected address location LSB first. A write takes place by shifting in eight bits of data LSB first for eight consecutive cycles of EXCLK. WR is then pulsed low and data transfer into the selected register occurs on the rising edge of WR. DTMF GENERATOR The DTMF generator controls the sending of the sixteen standard DTMF tone pairs. The tone pair sent is determined by selecting transmit DTMF (bit D4) and the 4 DTMF bits (D0-D3) of the Tone Register. Transmission of DTMF tones from TXA is gated by the transmit enable bit of CR0 (bit D1) as with all other analog signals. Page: 4 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET PIN DESCRIPTION POWER NAME GND VDD VREF ISET PIN 1 16 31 28 TYPE I I O I DESCRIPTION System ground Power supply input, 5 V ±10% Bypass with 0.1 and 22 µF capacitors to GND. An internally generated reference voltage. Bypass with 0.1 µF capacitor to ground. Chip current reference. Sets bias current for op-amps. The chip current is set by connecting this pin to VDD through a 2 MΩ resistor. ISET should be bypassed to GND with a 0.1 µF capacitor. PARALLEL MICROPROCESSOR CONTROL INTERFACE MODE ALE AD0-AD7 13 5-12 I I/O ADDRESS LATCH ENABLE: The falling edge of ALE latches the address on AD0-AD2 and the chip select on CS. ADDRESS/DATA BUS: These bi-directional tri-state multiplexed lines carry information to and from the internal registers. CHIP SELECT: A low on this pin during the falling edge of ALE allows a read cycle or a write cycle to occur. AD0-AD7 will not be driven and no registers will be written if CS (latched) is not active. The state of CS is latched on the falling edge of ALE. OUTPUT CLOCK: This pin is selectable under processor control to be either the crystal frequency (for use as a processor clock) or 16 times the data rate for use as a baud rate clock in DPSK modes only. The pin defaults to the crystal frequency on reset. INTERRUPT: This open drain output signal is used to inform the processor that a detect flag has occurred. The processor must then read the Detect Register to determine which detect triggered the interrupt. INT will stay low until the processor reads the detect register or does a full reset. READ: A low requests a read of the 73K324BL internal registers. Data can not be output unless both RD and the latched CS are active or low. RESET: An active high signal on this pin will put the chip into an inactive state. All Control Register bits (CR0, CR1, tone) will be reset. The output of the CLK pin will be set to the crystal frequency. An internal pull-down resistor permits power-on-reset using a capacitor to VDD. CS 23 I CLK 2 O INT 20 O RD 15 I RESET 30 I Page: 5 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET PARALLEL MICROPROCESSOR INTERFACE (continued) NAME WR PIN 14 TYPE I DESCRIPTION WRITE: A low on this informs the 73K324BL that data is available on AD0-AD7 for writing into an internal register. Data is latched on the rising edge of WR. No data is written unless both WR and the latched CS are low. SERIAL MICROPROCESSOR CONTROL INTERFACE MODE NAME AD0-AD2 PIN 5-7 TYPE I DESCRIPTION REGISTER ADDRESS SELECTION: These lines carry register addresses and should be valid during any read or write operation. SERIAL CONTROL DATA: Data for a read/write operation is clocked in or out on the falling edge of the EXCLK pin. The direction of data flow is controlled by the RD pin. RD low outputs data. RD high inputs data. READ: A low on this input informs the 73K324BL that data or status information is being read by the processor. The falling edge of the RD signal will initiate a read from the addressed register. The RD signal must continue for eight falling edges of EXCLK in order to read all eight bits of the referenced register. Read data is provided LSB first. Data will not be output unless the RD signal is active. WRITE: A low on this input informs the 73K324BL that data or status information has been shifted in through the DATA pin and is available for writing to an internal register. The normal procedure for a write is to shift in data LSB first on the DATA pin for eight consecutive falling edges of EXCLK and then to pulse WR low. Data is written on the rising edge of WR. DATA (AD7) 12 I/O RD 15 I WR 14 I NOTE: The serial control mode is provided by tying ALE high and CS low. In this configuration AD7 becomes DATA and AD0, AD1 and AD2 become the register address. Page: 6 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET DTE USER NAME EXCLK PIN 22 TYPE I DESCRIPTION EXTERNAL CLOCK: This signal is used in synchronous transmission when the external timing option has been selected. In the external timing mode the rising edge of EXCLK is used to strobe synchronous DPSK transmit data applied to on the TXD pin. Also used for serial control interface. RECEIVE CLOCK: The falling edge of this clock output is coincident with the transitions in the serial received data output. The rising edge of RXCLK can be used to latch the valid output data. RXCLK will be valid as long as a carrier is present. RECEIVED DATA OUTPUT: Serial receive data is available on this pin. The data is always valid on the rising edge of RXCLK when in synchronous mode. RXD will output constant marks if no carrier is detected. TRANSMIT CLOCK: This signal is used in synchronous transmission to latch serial input data on the TXD pin. Data must be provided so that valid data is available on the rising edge of the TXCLK. The transmit clock is derived from different sources depending upon the synchronization mode selection. In internal mode the clock is generated internally. In external mode TXCLK is phase locked to the EXCLK pin. In slave mode TXCLK is phase locked to the RXCLK pin. TXCLK is always active. TRANSMIT DATA INPUT: Serial data for transmission is applied on this pin. In synchronous modes, the data must be valid on the rising edge of the TXCLK clock. In asynchronous modes (1200/600 bps or 300/1200 baud) no clocking is necessary. DPSK data must be 1200/600 bps +1%, -2.5% or +2.3%, -2.5 % in extended over speed mode. RXCLK 26 O RXD 25 O TXCLK 21 O TXD 24 I . Page: 7 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET PIN DESCRIPTION (continued) ANALOG INTERFACE AND OSCILLATOR NAME RXA TXA1 / TXA 2 PIN 32 18 / 17 TYPE I O DESCRIPTION Received modulated analog signal input from the telephone line interface. (differential) Transmit Analog. These pins provide the analog output signals to be transmitted to the telephone line. The drivers will differentially drive the impedance of the line transformer and the line matching resistor. An external hybrid can also be built using TXA1 as a single ended transmit signal. These pins are for the internal crystal oscillator requiring a 11.0592 MHz parallel mode crystal. Load capacitors should be connected from XTL1 and XTL2 to ground. XTL2 can also be driven from an external clock. OFF-HOOK RELAY DRIVER: This signal is an open drain output capable of sinking 40 mA and is used for controlling a relay. The output is the complement of the OH register bit in the ID Register. XTL1 / XTL2 3/4 I OH 27 O . Page: 8 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET REGISTER DESCRIPTIONS Eight 8-bit internal registers are accessible for control and status monitoring. The registers are accessed in read or write operations by addressing the AD0, AD1 and AD2 lines in serial mode, or in parallel mode. The address lines and CS are latched by ALE in the parallel mode. Register CR0 controls the method by which data is transferred over the phone line. CR1 controls the interface between the microprocessor and the 73K324BL internal state. DR is a detect register which provides an indication REGISTER BIT SUMMARY ADDRESS REGISTER CONTROL REGISTER 0 CONTROL REGISTER 1 DETECT REGISTER AD-A0 D7 MODULATION OPTION D6 MODULATION TYPE 1 TRANSMIT PATTERN 0 PATTERN S1 DET D5 MODULATION TYPE 0 ENABLE DETECT INTERRUPT RECEIVE DATA D4 TRANSMIT MODE 2 BYPASS SCRAMBLER D3 TRANSMIT MODE 1 D2 TRANSMIT MODE 0 D1 TRANSMIT ENABLE D0 ANSWER/ ORIGINATE of monitored modem status conditions. TR, the tone control register, controls the DTMF generator, answer and guard tones and RXD output gate used in the modem initial connect sequence. CR2 is the primary DSP control interface and CR3 controls transmit attenuation and receive gain adjustments. All registers are read/write except for DR and ID, which are read only. Register control and status bits are identified below: CR0 000 CR1 001 TRANSMIT PATTERN 1 RECEIVE LEVEL CLK CONTROL RESET TEST MODE 1 TEST MODE 0 DR 010 UNSCR. MARK DETECT TRANSMIT DTMF CARRIER DETECT SPECIAL TONE DETECT DTMF2/ 4W/FDX CALL PROGRESS DETECT DTMF1/ EXTENDED OVERSPEED TRAIN INHIBIT SIGNAL QUALITY TONE CONTROL REGISTER CONTROL REGISTER 2 CONTROL REGISTER 3 SPECIAL REGISTER ID REGISTER TR 011 RXD OUTPUT CONTROL TRANSMIT GUARD TONE SPECIAL REGISTER ACCESS TRISTATE TX/RXCLK TRANSMIT ANSWER TONE CALL INITIALIZE DTMF 3 DTMF0/ GUARD/ ANSWER EQUALIZER ENABLE CR2 100 0 TRANSMIT S1 16 WAY RESET DSP TXDALT CR3 101 OH RECEIVE GAIN BOOST TRANSMIT ATTEN. 3 TXD SOURCE TRANSMIT ATTEN. 2 SQ SELECT 1 TRANSMIT ATTEN. 1 SQ SELECT 0 TRANSMIT ATTEN. 0 SR 101 0 TX BAUD CLOCK RX UNSCR. DATA 0 0 ID 110 ID ID ID ID X X X 1 NOTE: When a register containing reserved control bit is written into, the reserved bits must be programmed as 0’s. X = Undefined, mask in software Page: 9 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET REGISTER ADDRESS TABLE ADDRESS REGISTER AD2 - AD0 D7 D6 D5 DATA BIT NUMBER D4 D3 D2 D1 D0 CONTROL REGISTER 0 CR0 000 MODULATION OPTION MODULATION TYPE 1 MODULATION TYPE 0 TRANSMIT MODE 2 TRANSMIT MODE 1 TRANSMIT MODE 0 TRANSMIT ENABLE ANSWER/ ORIGINATE QAM: 0 = 2400 BIT/S DPSK: 0=1200 BIT/S 1 = 600 BIT/S FSK: 0 = V.23 1 = V.21 10=QA, 00=DPSK 01=FSK 0000 = PWR DOWN 0001 = INT SYNCH 0010 = EXT SYNCH 0011 = SLAVE SYNCH 0100 = ASYNCH 8 BITS/CHAR 0101 = ASYNCH 9 BITS/CHAR 0110 = ASYNCH 10 BITS/CHAR 0111 = ASYNCH 11 BITS/CHAR 1X00 = FSK ENABLE DETECT INTERRUPT BYPASS SCRAMBLER CLK CONTROL 0 = DISABLE TXA OUTPUT 1 = ENABLE TXA OUTPUT In V.21, V.22, V.22bis 0=ANSWER 1=ORIGINATE In V.23: 0=BC XMIT 1=MC XMIT CONTROL REGISTER 1 CR1 001 TRANSMIT PATTERN 1 TRANSMIT PATTERN 0 RESET TEST MODE 1 TEST MODE 0 00 = TX DATA 01 = TX ALTERNATE 10 = TX MARK 11 = TX SPACE 0 = DISABLE 1 = ENABLE 0 = NORMAL 0 = XTAL 0 = NORMAL 1 = BYPASS 1 = 16 X DATA 1 = RESET SCRAMBLER RATE OUTPUT AT CLK PIN IN QAM/DPSK MODE ONLY UNSCR. MARKS DETECT CARRIER DETECT ANSWER TONE DETECT 00 = NORMAL 01 = ANALOG LOOPBACK 10 = REMOTE DIGITAL LOOPBACK 11 = LOCAL DIGITAL LOOPBACK CP TONE DETECT SIGNAL QUALITY INDICATOR 0=GOOD 1=BAD DETECT REGISTER READ ONLY DR 010 RECEIVE LEVEL INDICATOR S1 PATTERN DETECT RECEIVE DATA 0=SIGNAL 0=NOT PRESENT OUTPUTS BELOW 1=PATTERN RECEIVED THRESHOLD FOUND DATA STREAM 1=ABOVE THRESHOLD TONE CONTROL REGISTER RXD OUTPUT CONTROL RXD PIN 0 = NORMAL 1 = OPEN TRANSMIT GUARD/ TONE 0 = OFF 1 = ON TRANSMIT ANSWER TONE 0 = OFF 1 = ON TRANSMIT DTMF 0 = CONDITION NOT DETECTED 1 = CONDITION DETECTED TR 011 DTMF3 DTMF2/ 4W/FDX DTMF1/ EXTENDED OVERSPEED DTMF0/ GUARD/ ANSWER/ CALLING/SCT 0 = DATA CARRIER 1=TX DTMF 4 BIT CODE FOR 1 OF 16 DUAL TONE COMBINATIONS GUARD: 0-1800 Hz 1-550 Hz ANSWER: 0-2225 Hz 1-2100 Hz CALLING: 0-1300 Hz SCT: 1-900 Hz CONTROL REGISTER 2 CR2 100 0 SPECIAL REGISTER ACCESS CALL INTIALIZE TRANSMIT S1 16 WAY RESET DSP TRAIN INHIBIT EQUALIZER ENABLE 0=ACCESS CR3 0=DSP IN 0=NORMAL 1=ACCESS DEMOD MODE DOTTING SPECIAL 1=DSP IN CALL 1=S1 REGISTER PROGRESS MODE RECEIVE GAIN BOOST 0=RX=TX 1=RX=16WAY 0=DSP INACTIVE 1=DSP ACTIVE 0=ADAPT EQ ACTIVE 1=ADAPT EQ FROZEN 0=ADAPT EQ IN INIT 1=ADAPT EQ OK TO ADAPT CONTROL REGISTER 3 CR3 101 TXDALT TRISTATE TX/RXCLK OH TRANSMIT ATTEN. 3 TRANSMIT ATTEN. 2 TRANSMIT ATTEN. 1 TRANSMIT ATTEN. 0 ALTERNATE TRANSMIT DATA SOURCE 0=NORMAL 1=TRISTATE 0=OH RELAY 0=NO BOOST DRIVER OPEN 1=18 dB BOOST 1=OH OPEN DRAIN DRIVER PULLING LOW RX UNSCR. DATA TXD SOURCE 0000-1111,SETS TRANSMIT ATTENUATOR 16 dB RANGE DEFAULT=0100 -10 dBm0 SPECIAL REGISTER SR 101 0 TX BAUD CLOCK 0 SQ SELECT 1 SQ SELECT 0 0 OUTPUTS TXBAUD CLOCK OUTPUTS UNSCR. DATA 0=TXD PIN 1=TXALT BIT 00 10 -5 BER 01 10 -6 BER 10 10 -4 BER 11 10 -3 BER ID REGISTER READ ONLY 10 110 1 1 1 0 X X X X 00XX=73K212AL, 322L, 321L 01XX=73K221AL, 302L 10XX=73K222AL, 222BL 1100=73K224L 1110=73K324L 1100=73K224BL 1110=73K324BL 0 = Only write zeros to these locations X = Undefined, mask in software Page: 10 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET CONTROL REGISTER 0 D7 CR0 000 BIT D0 MODUL. OPTION D6 MODUL. TYPE 1 NAME Answer/ Originate 1 D5 D4 D3 D2 D1 TRANSMIT ENABLE D0 ANSWER/ ORIGINATE MODUL. TRANSMIT TRANSMIT TRANSMIT TYPE 0 MODE 2 MODE 1 MODE 0 CONDITION DESCRIPTION 0 Selects answer mode (transmit in high band, receive in low band) or in V.23 HDX mode, receive at 1200 bps and transmit at 75 bps. Selects originate mode (transmit in low band, receive in high band) or in V.23 HDX mode, receive at 1200 bps and transmit at 75 bps. Note: This bit works with Tone Register bits D0 and D6 to program special tones detected in the Detect Register. See Detect and Tone Registers. D1 Transmit Enable 0 1 Disables transmit output at TXA1 & TXA2 Enables transmit output at TXA1 & TXA2 Note: Transmit enable must be set to 1 to allow activation of answer tone or DTMF. D5,D4 D3,D2 Transmit Mode D5 D4 D3 D2 0 0 0 0 0 0 0 1 Selects Power down mode. All functions disabled except digital interface. Internal synchronous mode in this mode TXCLK is an internally derived 600,1200 or 2400 Hz signal. Serial input data appearing at TXD must be valid on the rising edge of TXCLK. Receive data is clocked out of RXD on the falling edge of RXCLK. External synchronous mode. Operation is identical to internal synchronous, but TXCLK is connected internally to EXCLK pin, and a 600, 1200 or 2400 Hz clock must be supplied externally. Slave synchronous mode Same operation as other synchronous modes TXCLK is connected internally to the RXCLK pin in this mode. Selects a synchronous mode 8 bits/character (1 start bit, 6 data bits, 1 stop bit). Selects asynchronous mode - 9 bits/character (1 start bit, 7 data bits, 1 stop bit). Selects asynchronous mode - 10 bits/character (1 start bit, 8 data bits, 1 stop bit). Selects asynchronous mode - 11 bits/character (1 start bit, 8 data bits, 1 stop bit) or 2 stop bits).. Selects FSK operation. 0 0 1 0 0 0 1 1 0 0 0 0 1 1 1 1 1 X 0 0 1 1 0 0 1 0 1 0 Page: 11 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET CONTROL REGISTER 0 (continued) D7 CR0 000 BIT D6,D5 MODUL. OPTION D6 MODUL. TYPE 1 NAME Modulation Type D5 D4 D3 D2 D1 TRANSMIT ENABLE D0 ANSWER/ ORIGINATE MODUL. TRANSMIT TRANSMIT TRANSMIT TYPE 0 MODE 2 MODE 1 MODE 0 CONDITION DESCRIPTION D6 D5 1 0 0 D7 Modulation Option 0 1 0 0 1 QAM DPSK FSK QAM selects 2400 bps. DPSK selects 1200 bps. selects 103 mode. DPSK selects 600 bps. FSK selects V.21 mode. FSK Page: 12 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET CONTROL REGISTER 1 D7 D6 D5 D4 D3 D2 D1 D0 CR0 MODUL. MODUL. 000 OPTION TYPE 1 BIT NAME D0, D1 Test Mode MODUL. TRANSMIT TRANSMIT TRANSMIT TRANSMIT ANSWER/ TYPE 0 MODE 2 MODE 1 MODE 0 ENABLE ORIGINATE CONDITION DESCRIPTION D1 D0 0 0 Selects normal operating mode. 0 1 Analog loopback mode. Loops the transmitted analog signal back to the receiver, and causes the receiver to use the same carrier frequency as the transmitter. To squelch the TXA pin, transmit enable bit as well as Tone Register bit D2 must be low. 1 0 Selects remote digital loopback. Received data is looped back to transmit data internally, and RXD is forced to a mark. Data on TXD is ignored. 11 Selects local digital loopback. Internally loops TXD back to RXD and continues to transmit data carrier at TXA pin Reset 0 Selects Normal Operations 1 Resets modem to power-down state. All Control Register bits (CR0, CR1, CR2, CR3 and tone) are reset to zero except CR3 bit D2. The output of the clock pin will be set to the crystal frequency. Clock Control 0 Selects 11.0592 MHz crystal echo output at CLK pin. 1 Selects 16 times the data rate output at CLK pin in DPSK/QAM modes only. Bypass 0 Selects normal operation. DPSK and QAM data is Scrambler passed through scrambler. 1 Selects Scrambler bypass. Bypass DPSK and QAM data is route around scrambler in the transmit path. 0 1 Disables interrupt at INT pin. All interrupts are normally disabled in power-down mode. Enables INT output. An interrupt will be generated with a change in status of DR bits D1- D4 and D6. The answer tone and call progress detect interrupts are masked when the TX enable bit is set. Carrier detect is masked when TXDTMF is activated. All interrupts will be disable if the device is in power-down mode. Selects normal data transmission as controlled by the state of the TXD pin. Selects an alternating mar/space transmit pattern for modem testing and handshaking. Also used for S1 pattern generation (see CR2 bit D4). Selects a constant mark transmit pattern. Selects a constant space transmit pattern. D2 D3 D4 D5 Enable Detect Interrupt D6, D7 Transmit Pattern D7 D6 0 0 0 1 1 1 0 1 Page: 13 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET DETECT REGISTER D7 DR 010 BIT D0 D6 D5 D4 D3 D2 D1 D0 RECEIVE S1 RECEIVE UNSCR. CARR. SPECIAL CALL SIGNAL LEVEL PATTERN DATA MARK DETECT TONES PROG. QUALITY INDICATOR DETECT DETECT DETECT DETECT INDICATOR NAME CONDITION DESCRIPTION Signal Quality 0 Indicates normal received signal. Indicator 1 Indicates low received signal quality (above average error rate). Interacts with Special Register bits D2, D1. Call Progress 0 No call progress tone detected. Detect 1 Indicates presence of call progress tones. The call progress detection circuitry is activated by energy in the normal 350 to 620 Hz call progress bandwidth. Special Tone 0 Condition not detected. Detect 1 Condition detected CR0 D0 TR D0 CR2 D5 D1 D2 1 1 0 1 D3 Carrier Detect 0 1 X X 0 1 0 1 1 1 0 0 D4 Unscrambled Mark Detect Receive Data D5 D6 S1 Pattern Detect 0 1 D7 Receive Level Indicator 0 1 2225 Hz ±10 Hz answer tone detected in V.22bis, V.22 modes. 2100 Hz ±21 Hz answer tone detected in V.22 bis, V.22 modes. 900 Hz SCT tone detected in V.23 mode. 2100 Hz or 2225 Hz answer tone detected in QAM, DPSK mode No carrier detected in the receive channel. Indicated carrier has been detected in the received channel. No unscrambled mark. Indicates detection of unscrambled marks in the received data. Should be time qualified by software. Continuously outputs the received data stream. This data is the same as that output on the RXD pin, but it is not disabled when RXD is tri-stated. No S1 pattern being received. S1 pattern detected. Should be time qualified by software. S1 pattern is defined as a double di-bit (001100..) unscrambled 1200 bps DPSK signal. Pattern must be aligned with baud clock to be detected. Received signal level below threshold, (typical @ -25 dBm0); can use receive gain boost (+18 dB). Received signal above threshold. Page: 14 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET TONE REGISTER D7 TR 011 RXD OUTPUT CONTROL D6 TRANSMIT GUARD TONE NAME DTMF 0/ Guard Tone/ Answer Tone/ Calling/SCT Tone/ Transmit Select D5 TRANSMIT ANSWER TONE D4 TRANSMIT DTMF D3 DTMF 3 D2 DTMF 2/ 4-WIRE FDX D1 DTMF 1/ EXTENDED OVERSPEED D0 DTMF 0/ G.T./ANSW./ CALLING// SCT TONE/SEL BIT D0, D4, D5, D6 CONDITION D6 D5 D4 D0 XX1X 1 1 0 0 0 0 0 1 DESCRIPTION D0 interacts with bits D6, D5, and D4 as shown Transmit DTMF tones (overrides all other functions). Must be in V.22 mode during DTMF transmission Select 1800 HZ guard tone if in V.22bis or V.22 and Answer mode in CR0. Select 550 Hz guard tone if in V.22bis or V.22 and Answer mode in CR0. D1 DTMF 1/ Extended Overspeed DTMF 2/ 4 Wire FDX D2 Note: Bit D0 also selects the answer tone detected in Originate mode, see Detect Register Special Tone Detect (bit D2) for details. 1000 1300 Hz calling tone will be transmitted if V.22, V.22bis or V.23 Originate mode is selected in CR0. X100 Transmit 2225 Hz Answer Tone. Must be in DPSK Answer mode.. X101 Transmit 2100 Hz Answer Tone. Must be in DPSK Answer mode. 1001 900 Hz SCT (soft carrier turnoff) tone transmitted in V.23 75 bps Receive mode. (CR0 bit D0 = 1) D4 D1 D1 interacts with D4 as shown. 0 0 Asynchronous QAM or DPSK +1% -2.5%. (normal) 0 1 Asynchronous QAM or DPSK +2.3% -2.5%. (extended overspeed) D4 D2 0 0 Selects 2-wire duplex or half duplex 0 1 D2 selects 4-wire full duplex in the modulation mode selected. The receive path corresponds receive mode selected by the ANS/ORIG bit CR0 D0 in terms of high or low band operation. The transmitter is in the same band as the receiver, but does not have magnitude filtering or equalization on its signal as in the receive path. Page: 15 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET TONE REGISTER D7 TR 011 RXD OUTPUT CONTROL D6 TRANSMIT GUARD TONE NAME DTMF 3, 2, 1, 0 D5 TRANSMIT ANSWER TONE D4 TRANSMIT DTMF D3 DTMF 3 D2 DTMF 2/ 4-WIRE FDX D1 DTMF 1/ EXTENDED OVERSPEED D0 DTMF 0/ ANSWER GUARD BIT D3, D2, D1, D0 CONDITION D3 D2 D1 D0 0 0 0 01111 DESCRIPTION D0 interacts with bits D6, D5, and D4 as shown Programs 1 of 16 DTMF tone pairs that will be transmitted when TX DTMF and TX enable bit (CR0, bit D1) is set. Tone encoding is shown below: KEYBOARD DTMF CODE TONES EQUIVALENT D3 D2 D1 D0 LOW HIGH 1 0 0 0 1 697 1209 2 3 4 5 6 7 8 9 0 * # A B C D 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 697 697 770 770 770 852 852 852 941 941 941 697 770 852 941 1336 1477 1209 1336 1477 1209 1336 1477 1336 1209 1477 1633 1633 1633 1633 Enables RXD pin. Receive data will be output on RXD. Disables RXD pin. The RXD pin reverts to a high impedance with internal weak pull-up resistor. NOTE: DTMF0-DTMF2 should be set to an appropriate state after DTMF dialing to avoid unintended operation. D7 RXD Output Control 0 1 Page: 16 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET CONTROL REGISTER 2 D7 CR2 100 BIT D0 0 D6 SPEC REG ACCESS NAME Equalizer Enable D5 CALL INIT D4 TRANSMIT S1 D3 16 WAY D2 RESET DSP D1 TRAIN INHIBIT D0 EQUALIZER ENABLE CONDITION 0 1 D1 D2 Train Inhibit RESET DSP 0 1 0 1 0 1 DESCRIPTION The adaptive equalizer is in its initialized state. The adaptive equalizer is enabled. This bit is used in handshakes to control when the equalizer should calculate its coefficients. The adaptive equalizer is active. The adaptive equalizer coefficients are frozen. The DSP is inactive and all variables are initialized. The DSP is running based on the mode set by other control bits. The receiver and transmitter are using the same decision plane (based on the modulator control mode). The receiver, independent of the transmitter, is forced into a 16 point decision plane. Used for QAM handshaking. The transmitter when placed in alternating mark/space mode transmits 0101...... scrambled or not dependent on the bypass scrambler bit. When this bit is 1 and only when the transmitter is placed in alternating mark/space mode by CR1 bits D7, D6, and in DPSK or QAM, an unscrambled repetitive double di-bit pattern of 00 and 11 at 1200 bps (S1) is sent The DSP is set-up to do demodulation and pattern detection based on the various mode bits. Both answer tones are detected in demodulation mode concurrently; TR-D0 is ignored. The DSP decodes unscrambled mark, answer tone and call progress tones. Normal CR3 access. Setting this bit and addressing CR3 allows access to the special register (see the special register for details). Only write zero to this bit. D3 16 Way D4 Transmit S1 0 1 D5 Call Init 0 1 D6 Special Register Access Not used at this time 0 1 0 D7 Page: 17 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET CONTROL REGISTER 3 D7 CR3 101 BIT D3, D2, D1,D0 TXDALT D6 TRI-STATE TX/RXCLK NAME Transmit Attenuator D5 OH D4 D3 D2 D1 D0 RECEIVE TRANSMIT TRANSMIT TRANSMIT TRANSMIT BOOST ATTEN. 3 ATEN 2 ATTEN. 1 ATTEN. 0 ENABLE CONDITION DESCRIPTION D3 D2 D1 D0 0 0 0 0 Sets the attenuation level of the transmitted signal in 1 1 1 1 1 dB steps. The default (D3 - D0 = 0100) is for a transmit level of -10 dBm0 on the line with the recommended hybrid transmit gain. The total range is 16 dB. 0 18 dB receive front end boost is not used. 1 Boost is in the path. This boost does not change reference levels. It is used to extend dynamic range by compensating for internally generated noise when receiving weak signals. The receive level detect signal and knowledge of the hybrid and transmit attenuator setting will determine when boost should be enabled. 0 Relay driver open. 1 Open drain driver pulling low. 0 TXCLK and RXCLK are driven. 1 TXCLK and RXCLK are tri-stated. Special Register Alternate TX data source (see Special Register). Bit D3=1 D4 Receive Gain Boost D5 D6 D7 OH Tri-state TXCLK/RXCLK TXDALT Page: 18 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET SPECIAL REGISTER D7 SR 101 0 D6 TXBAUD CLOCK D5 RXUNDSCR DATA D4 0 D3 TXD SOURCE D2 SIGNAL QUALITY LEVEL SELECT 1 D1 SIGNAL QUALITY LEVEL SELECT 0 D0 0 DESCRIPTION Not used at this time. Only write zeros to these bits. TXBAUD CLK TXBAUD clock is the transmit baud-synchronous clock that can be used to synchronize the input of arbitrary quad/di-bit patterns. The rising edge of TXBAUD signals the latching of a baud-worth of data internally. Synchronous data to be entered via the TXDALT bit, CR3 bit D7, should have data transitions that start 1/2 bit period delayed from the TXBAUD clock edges. D5 RXUNDSCR This bit outputs the data received before going to the descrambler. Data This is useful for sending special unscrambled patterns that can be used for signaling. D3 TXD Source This bit selects the transmit data source; either the TXD pin if zero or the TXDALT if this bit is a one. The transmit pattern bits D7 and D6 in CR1 override either of these sources. D2, D1 Signal Quality The signal quality indicator is a logical zero when the signal received is Level Select acceptable for low error rate reception. It is determined by the value of the mean squared error (MSE) calculated in the decision process when compared to a given threshold. This threshold can be set to four levels of error rate. The SQI bit will be low for good or average connections. As the error rate crosses the threshold setting, the SQI bit will toggle at a 1.66 ms rate. Toggling will continue until the error rate indicates that the data pump has lost convergence and a retrain is required. At that point the SQI bit will be a one constantly. The SQI bit and threshold selection are valid for QAM and DPSK only and indicates typical error rate. D2 D1 THRESHOLD VALUE UNITS 0 0 10-5 BER (default) 0 1 10-6 BER -4 1 0 10 BER 1 1 10-3 BER NOTE: This register is "mapped" and is accessed by setting CR2 bit D6 to a one and addressing CR3. This register provides functions to the 73K324BL user that are not necessary in normal communications. Bits D7-D4 are read only, while D3-D0 are read/write. To return to normal CR3 access, CR2 bit D6 must be returned to a zero. BIT D7, D4, D0 D6 NAME Page: 19 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET ID REGISTER D7 ID 110 BIT D7, D6, D5, D4 ID D6 ID NAME Device Identification Signature D5 ID D4 ID D3 X D2 X D1 X D0 X CONDITION D7 D6 D5 D4 0 0 X X 0 1 X X 1 0 X X 1 1 0 0 1 1 1 0 DESCRIPTION Indicates Device: 73K212L, 73K321L or 73K322L 73K221L or 73K302L 73K222L or 73K222BL 73K224L, 73K224BL 73K324L, 73K324BL Page: 20 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET ELECTRICAL SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS PARAMETER VDD supply voltage Storage temperature Soldering temperature (10 s) Applied voltage RATING 7V -65 to 150° C 260° C -0.3 to VDD + 0.3 V NOTE: All inputs and outputs are protected from static charge using built-in, industry standard protection devices and all outputs are short-circuit protected. RECOMMENDED OPERATING CONDITIONS PARAMETER VDD supply voltage TA, operating free-air Clock variation (11.0592 MHz) crystal or external clock External components (Refer to application section for placement.) VREF bypass capacitor Bias setting resistor ISET bypass capacitor VDD bypass capacitor 1 VDD bypass capacitor 2 XTL1 load capacitor XTL2 load capacitor Hybrid loading R1 R2 C1 External to GND Placed between VDD and ISET pins ISET pin to GND External to GND External to GND Depends on crystal characteristics from pin to GND Depends on crystal characteristics from pin to GND see Figure 1 600 600 0.033 Ω Ω µF CONDITION MIN 4.5 -40 -0.01 NOM 5 MAX 5.5 +85 +0.01 UNIT V C % 0.1 1.8 0.1 0.1 22 Note 1 2 2.2 µF MΩ µF Note 1 Note 1 40 40 µF µF pF pF NOTE 1: Minimum for optimized system layout; may require higher values for noisy environments. Page: 21 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET DC ELECTRICAL CHARACTERISTICS (TA = -40°C to 85°C, VDD = recommended range unless otherwise noted.) PARAMETER IDD, Supply Current IDD1, Active IDD2, Idle Digital Inputs VIL, Input Low Voltage VIH, Input High Voltage All Inputs except Reset XTL1, XTL2 Reset, XTL1, XTL2 IIH, Input High Current IIL, Input Low Current Reset Pull-down Current Digital Outputs VOH, Output High Voltage VOL, Output Low Voltage RXD Tri-State Pull-up Current. OH Output VOL Capacitance CLK Input Capacitance IO = IOH Min IOUT = -0.4 mA IO = IOUT = 1.6 mA RXD = GND IOUT = 40 mA Maximum permitted load All digital inputs -2 2.4 VDD 0.4 -50 1.4 25 10 V V µA V pF pF VI = VDD VI = 0V Reset = VDD -200 2 50 2.0 3.0 VDD VDD 100 V V µA µA µA CONDITION CLK = 11.0592 MHz ISET Resistor = 2 MΩ Operating with crystal oscillator, < 5 pF capacitive load on CLK pin 20 5 27 7 0.8 mA mA V MIN NOM MAX UNIT Page: 22 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET FIGURE 1: Analog Interface Hybrid Loading Page: 23 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET ELECTRICAL SPECIFICATIONS (continued) DYNAMIC CHARACTERISTICS AND TIMING (TA = -40°C to +85°C, VDD = recommended range unless otherwise noted.) PARAMETER QAM/DPSK Modulator Carrier suppression Output Amplitude Measured between TXA1 and TXA2 TX Scrambled marks ATT = 0100 (default) CLK = 11.0592 MHz ATT = 0100 (default) transmit dotting pattern All products through BPF Dotting pattern measured at RXD receive level -20 dBm, SNR 20 dB Integrated for 5 seconds Integrated for 5 seconds -10 -15 -17 35 -11.5 -10 -9 dB dBm0 CONDITION MIN NOM MAX UNIT FSK Modulator/Demodulator Output Frequency Error Transmit Level TXA output distortion Output bias distortion @ RXD Output jitter @ RXD Sum of bias distortion and output jitter Output amplitude Output Distortion DTMF Generator Frequency accuracy Output amplitude Output amplitude Twist Receiver Dynamic Range Call Progress Detector Detect level Reject level Delay time -0.31 -11.5 -10 +0.20 -9 -45 +10 +15 +17 % dBm0 dB % % % Answer Tone Generator (2100 or 2225 Hz) Note: Do note use in V.21 when transmitting answer tone. ATT = 0100 (default level) In V.22 mode Distortion products in receive band In V.22 mode -0.03 Low band, ATT = 0100, DPSK mode High band, ATT = 0100, DPSK mode High band to low band, DPSK mode Refer to performance curves In call init mode 460 Hz test signal 460 Hz test signal -70 dBm0 to -30 dBm0 step -34 0 -40 25 25 dBm0 dBm0 ms ms -10 -8 1 -43 2 +0.25 -8 -6 3 -3 % dBm0 dBm0 dB dBm0 -11.5 -10 -9 -40 dBm0 dB Hold time -30 dBm0 to -70 dBm0 step NOTE: Parameters expressed in dBm0 refer to the following definition: 9 dB loss for the V.23 back channel transmit path (TXA1 – TXA2 to the line) 3 dB loss in the receive path from the line to RXA 8 dB loss in the transmit path (TXA1 - TXA2 to the line) in all modes except V.23 back channel Page: 24 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET DYNAMIC CHARACTERISTICS AND TIMING (continued) PARAMETER Carrier Detect Threshold Hysteresis Delay Time FSK DPSK QAM Hold Time FSK DPSK QAM Answer Tone Detectors Detect Level Detect Time Hold Time Pattern Detectors S1 Pattern Delay Time Hold Time Unscrambled Mark Delay Time Hold Time Receive Level Indicator Detect On Valid after Carrier Detect DPSK Mode -22 1 4 -28 7 dBm0 ms For signals from -6 to -40 call init mode 10 10 45 45 ms ms For signals from -6 to -40 dBm0, -6 to -40 dBm0, demodulation mode 10 10 55 45 ms ms Call init mode, 2100 or 2225 Hz Call init mode, 2100 or 2225 Hz DPSK Mode CONDITION All modes All modes 70 dBm0 to -6 dBm0 70 dBm0 to -40 dBm0 -70 dBm0 to -6 dBm0 -70 dBm0 to -40 dBm0 -70 dBm0 to -6 dBm0 -70 dBm0 to -40 dBm0 -6 dBm0 to -70 dBm0 40 dBm0 to -70 dBm0 -6 dBm0 to -70 dBm0 -40 dBm0 to -70 dBm0 -6 dBm0 to -70 dBm0 -40 dBm0 to -70 dBm0 DPSK Mode -48 6 6 -43 50 50 dBm0 ms ms MIN -48 2 25 25 7 7 25 25 25 15 20 14 25 18 37 37 17 17 37 37 37 30 29 21 32 28 ms ms ms ms ms ms ms ms ms ms ms ms NOM MAX -43 UNIT dBm0 Receive gain = On for lower input level measurements Page: 25 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET DYNAMIC CHARACTERISTICS AND TIMING (continued) PARAMETER Transmit Attenuator Range of Transmit Level Step Accuracy Clock Noise TXA pins; 153.6 kHz Carrier Offset Capture Range Recovered Clock Capture Range Guard Tone Generator Tone Accuracy Tone Level (Below QAM/DPSK Output) Harmonic Distortion (700 to 2900 Hz) 550 Hz 1800 Hz 550 Hz 1800 Hz 550 Hz 1800 Hz -4.5 -7.5 +1.2 -0.8 -3.0 -6.1 -1.5 -4.5 -50 -50 dB dB dB dB % Originate or Answer % of frequency (originate or answer) -0.02 ±5 +0.02 Hz % 1.5 mVrms Default ATT=0100 (-10 dBm0) 1111-0000 -22 -0.15 -6 +0.15 dBm0 dB CONDITION MIN NOM MAX UNIT Page: 26 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET DYNAMIC CHARACTERISTICS AND TIMING (continued) PARAMETER TIMING (Refer to Timing Diagrams) CONDITION * CS/Address setup before ALE Low CS AD0-AD7 CS hold after ALE Low Address hold after ALE Low ALE Low to RD/WR Low RD/WR Control to ALE High Data out from RD Low ALE width Data float after RD High RD width WR width Data setup before WR High Data hold after WR High Data out after EXCLK Low WR after EXCLK Low Data setup before EXCLK Low Address setup before control** Address hold after control** MIN 12 0 10 10 0 0 15 NOM MAX UNIT ns ns ns ns ns TAL TLA TLC TCL TRD TLL TRDF TRW TWW TDW TWD TCKD TCKW (serial mode) TDCK (serial mode) TAC (serial mode) TCA (serial mode) 70 50 ns ns ns ns ns ns ns 50 50 15 12 200 150 150 50 50 20 ns ns ns ns ns TWH (serial mode) Data Hold after EXCLK * All timing parameters are targets and not guaranteed. ** Control for setup is the falling edge of RD or WR. Control for hold is the falling edge of RD or the rising edge of WR. NOTE: Asserting ALE, CS, and RD or WR concurrently can cause unintentional register accesses. When using non-8031 compatible processors, care must be taken to prevent this from occurring when designing the interface logic. Page: 27 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET TIMING DIAGRAMS TLL ALE RD WR TLA TAL AD0-AD7 CS ADDRESS READ DATA ADDRESS TRD TRDF TDW WRITE DATA TLC TRW TCL TLC TWW TWD FIGURE 2: Bus Timing Diagram (Parallel Control Mode) EXCLK RD TAC AD0-AD2 TCA ADDRESS TRD TCKD D1 D2 D3 D4 D5 D6 D7 TRDF DATA D0 FIGURE 3: Read Timing Diagram (Serial Control Mode) EXCLK TWW WR TCKW TAC ADDRESS TCA AD0-AD2 TDCK DATA D0 D1 D2 D3 D4 D5 D6 D7 TWH FIGURE 4: Write Timing Diagram (Serial Control Mode) Page: 28 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET APPLICATIONS INFORMATION GENERAL CONSIDERATIONS Figure 5 shows the basic circuit diagram for a 73K324BL modem integrated circuit designed to be used in conjunction with a control processor, a UART or RS-232 serial data interface, and a DAA phone line interface to function as a typical intelligent modem. The K-Series ICs interface directly with Intel 8048 and 80C51 microprocessors for control and status monitoring purposes. A typical DAA arrangement is shown in Figure 5. This diagram is for reference only and does not represent a production-ready modem design. The 73K324BL can be used in either of two control interface configurations: one for a parallel multiplexed address/data interface, and one for a serial interface. The parallel method is intended for use with 8039/48 or 8031/51 compatible microcontrollers from Intel or many other manufacturers. The serial interface mode can be used with other microcontrollers or in applications where only a limited number of port lines are available or the application does not lend itself to a multiplexed address/data interface. In most applications the controller will monitor the serial data for commands from the DTE and the received data for break signals from the far end modem. In this way, commands to the modem are sent over the same line as the transmitted data. In other applications the RS-232 interface handshake lines are used for modem control. RING DETECT +5 TX DATA RX DATA 2 MΩ 1 μF 1 2 3 4 5 6 7 8 9 GND CLK XTL1 XTL2 AD0 AD1 32 RXA 31 VREF RESET 30 29 N/C 28 ISET 27 OH 26 RXCLK 25 RXD 24 TXD 23 CS EXCLK 22 21 TXCLK INT 20 19 N/C 18 TXA1 TXA2 17 + 11.0592 MHz 0.1 μF 0.1 μF 8.2 K RING DETECTOR CONTROL INTERFACE ADR/DATA BUS AD2 AD3 AD4 10 AD5 11 AD6 12 AD7 13 ALE 14 WR 15 RD 16 VDD HOOK RELAY FUSE 600 Ω +5 1 2 3 4 μC ALE μC WR μC RD +5 + 10 μF 0.1 μF 0.033 μF 600 Ω 1:1 TYP. TRANSFORMER TRANSIENT SUPPRESSOR RJ - 11 RXCLK TXCLK EXCLK CHIP SELECT FIGURE 5: Typical 73K324BL DAA Circuit Page: 29 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET APPLICATIONS INFORMATION (continued) DIRECT ACCESS ARRANGEMENT (DAA) The DAA (Direct Access Arrangement) required for the 73K324BL consists of an impedance matching resistor, telecom coupling transformer, ring detection and fault protection circuitry. The transformer specifications must comply with the PTT requirements of the country in which the modem is being operated. Transformers designed specifically for use with the telephone network should be used. These may present a DC load to the network themselves (a “wet” transformer) or they may require AC coupling with a DC load provided by additional devices (a “dry” transformer). A dry transformer will generally provide higher performance and smaller size than a wet transformer. A wet transformer allows a simpler design, but must not saturate with the worst case DC current passing through it or distortion and poor performance will result. The protection circuitry typically consists of a transient suppression device and current limiter to protect the user and the telephone network from hazardous voltages that can be present under fault conditions. The transient suppresser may be a MOV (metal oxide varistor), Sidactor (Teccor Electronics Inc.), spark gap device , or avalanche diode. Some devices clamp the transient to their specified break down voltage and others go into low impedance crowbar state. The latter require that the fault current cease before they can return to their inactive state. Current limiting devices can consist of a resistor, Raychem PolySwitch resettable fuse, or slow blow fuse that can withstand the transient tests without permanent damage or replacement. Ring detection circuitry is not required by the FCC, but may be required by the application. The ring detector usually consists of an optoisolator, capacitor, and resistor to present the proper AC load to the network to meet the REN (Ring Equivalency Number) regulations of FCC Part 68. The K-Series Design Manual contains detailed information on the design of a ring detect circuits as well as the other topics concerning the DAA. DESIGN CONSIDERATIONS Semiconductor's one-chip modem products include all basic modem functions. This makes these devices adaptable for use in a variety of applications, and as easy to control as conventional digital bus peripherals. Unlike digital logic circuitry, modem designs must properly contend with precise frequency tolerances and very low level analog signals, to ensure acceptable performance. Using good analog circuit design practices will generally result in a sound design. Following are additional recommendations that should be taken into consideration when starting new designs. CRYSTAL OSCILLATOR The K-Series crystal oscillator requires a parallel mode (anti-resonant) crystal that operates at 11.0592 MHz. It is important that this frequency be maintained to within ±0.01% accuracy over all operating conditions. In order for a parallel mode crystal to operate correctly and to specification, it must have a capacitor connected to the junction of each of the crystal and internal inverter connections, terminated to ground. The values of these capacitors depend primarily on the crystal’s characteristics, and to a lesser degree on the internal inverter circuit. The values used affect the accuracy and start up characteristics of the oscillator. LAYOUT CONSIDERATIONS Good analog/digital design rules must be used to control system noise in order to obtain highest performance in modem designs. The more digital circuitry present on the PC board, the more this attention to noise control is needed. The modem should be treated as a high performance analog device. A 22 µF electrolytic capacitor in parallel with a 0.1 µF ceramic capacitor between VDD and GND is recommended. Liberal use of ground planes and larger traces on power and ground are also highly favored. High speed digital circuits tend to generate a significant amount of EMI (ElectroMagnetic Interference), which must be minimized in order to meet regulatory agency limitations. Page: 30 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET To accomplish this, high speed digital devices should be locally bypassed, and the telephone line interface and K-Series device should be located close to each other near the area of the board where the phone line connection is accessed. To avoid problems, power supply and ground traces should be routed separately to the analog and digital functions on the board, and digital signals should not be routed near low level or high impedance analog traces. The analog and digital grounds should only connect at one point near the KSeries device ground pin to avoid ground loops. The K-Series modem ICs should have both high frequency and low frequency bypassing as close to the package as possible. BER VS. S/N This test measures the ability of the modem to operate over noisy lines with a minimum of datatransfer errors. Since some noise is generated in the best of dial-up lines, the modem must operate with the lowest S/N ratio possible. Better modem performance is indicated by test curves that are closest to the BER axis. A narrow spread between curves representing the four line parameters indicates minimal variation in performance while operating over a range of operating conditions. Typically, a DPSK modem will exhibit better BER performance test curves receiving in the low band than in the high band. BER VS. RECEIVE LEVEL This test measures the dynamic range of the modem. Because signal levels vary widely over dial-up lines, the widest possible dynamic range is desirable. The minimum Bell specification calls for 36 dB of dynamic range. S/N ratios are held constant at the indicated values while the receive level is lowered from a very high to very low signal levels. The width of the “bowl” of these curves, taken at the BER point, is the measure of dynamic range. MODEM PERFORMANCE CHARACTERISTICS The curves presented here define modem IC performance under a variety of line conditions while inducing disturbances that are typical of those encountered during data transmission on public service telephone lines. Test data was taken using an TAS “1200” modem test set and line simulator, operating under computer control. All tests were run full-duplex, using a standard off-the-shelf modem as the reference modem. A 511 pseudo-random-bit pattern was used for each data point. Noise was Cmessage weighted and all signal-to-noise (S/N) ratios reflect total power measurements similar to the CCITT V.56 measurement specification. The individual tests are defined as follows. Page: 31 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET 73K324BL BER vs S/N-DPSK LOW BAND 10 -2 LOW BAND RECEIVE -30 dBm DPSK OPERATION 1200 BIT/S 73K324BL BER vs S/N-DPSK HIGH BAND 10 -2 HIGH BAND RECEIVE -30 dBm DPSK OPERATION 1200 BIT/S 10 -3 10 -3 3002 C1, 3002, FLAT BIT ERROR RATE BIT ERROR RATE C1, C2, FLAT 10 -4 10 -4 10 -5 10 -5 C2 10 -6 4 6 8 10 12 14 16 SIGNAL TO NOISE (dB) 10 -6 4 6 8 10 12 14 16 SIGNAL TO NOISE (dB) 73K324BL BER VS S/N-QAM-LOW BAND 10 -2 HIGH BAND RECEIVE -30 dBm QAM OPERATION 2400 BIT/S 73K324BL BER VS S/N-QAM-HIGH BAND 10 -2 HIGH BAND RECEIVE -30 dBm QAM OPERATION 2400 BIT/S C1 C1 10 -3 10 -3 FLAT FLAT BIT ERROR RATE 10 -4 3002 C2 BIT ERROR RATE 10 -4 3002 C2 10 -5 10 -5 10 -6 10 8 10 12 14 16 18 20 SIGNAL TO NOISE (dB) -6 8 10 12 14 16 18 20 SIGNAL TO NOISE (dB) Page: 32 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET MECHANICAL SPECIFICATIONS 32-Lead PLCC 0.453 (11.51) 0.449 (11.40) 0.023 0.029 PIN NO. 1 IDENT. 0.140 (3.56) 0.123 (3.12) 0.050 0.013 0.021 0.300 REF (7.62 REF) 0.430 (10.92) 0.390 (9.91) 0.026 0.032 0.045 (1.140) 0.020 (0.508) 0.595 (15.11) 0.585 (14.86) 0.553 (14.05) 0.549 (13.94) 0.095 (2.41) 0.078 (1.98) 0.400 REF (10.16 REF) 0.530 (13.46) 0.490 (12.45) 0.495 (12.57) 0.485 (12.32) Page: 33 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1 73K324BL CCITT V.22bis,V.23,V.22,V.21, Bell 212A Single-Chip Modem w/ Integrated Hybrid DATA SHEET PACKAGE PIN DESIGNATIONS (Top View) RESET 30 29 28 27 26 25 24 23 22 21 20 INT XTAL2 XTAL1 VREF CAUTION: Use handling procedures necessary for a static sensitive component. GND 1 4 AD0 AD1 AD2 AD3 AD4 AD5 AD6 DATA/AD7 ALE 5 6 7 8 9 10 11 12 13 14 WR 3 2 32 RXA CLK 31 N/C ISET OH RXCLK RXD TXD CS EXCLK TXCLK 15 RD 16 VDD 17 TXA2 18 TXA1 19 N/C 32-Pin PLCC 73K324BL-IH ORDERING INFORMATION PART DESCRIPTION 73K324BL 73K324BL 32-Pin PLCC Lead-Free 32-Pin PLCC Lead-Free tape / Reel ORDER NUMBER 73K324BL-IH/F 73K324BL-IHR/F PACKAGING MARK 73K324BL-IH 73K324BL-IH No responsibility is assumed by TERIDIAN Semiconductor Corporation for use of this product nor for any infringements of patents and trademarks or other rights of third parties resulting from its use. No license is granted under any patents, patent rights or trademarks of TERIDIAN Semiconductor Corporation. TERIDIAN Semiconductor Corporation reserves the right to make changes in specifications at any time without notice. Accordingly, the reader is cautioned to verify that the data sheet is current before placing orders. TERIDIAN Semiconductor Corporation, 6440 Oak Canyon Rd., Irvine, CA 92618-5201, (714) 508-8800, FAX: (714) 508-8877, www.teridiansemi.com Protected by the following Patents (4,691,172) (4,777,453) © 2005, 2008 TERIDIAN Semiconductor Corporation 06/20/08 – rev. 6.1 Page: 34 of 34 © 2005, 2008 TERIDIAN Semiconductor Corporation Rev 6.1