HI-15530CDT

HI-15530 Manchester Encoder / Decoder July 2001 GENERAL DESCRIPTION The HI-15530 is a high performance CMOS integrated circuit designed to meet the requirements of Mil-Std-1553 and similar Manchester II encoded, time division multiplexed serial data protocols. The HI-15530 contains both an Encoder and Decoder, which operate independently. The device generates Mil-Std-1553 sync pulses, parity bits as well as the Manchester II encoding of the data bits. The decoder recognizes and identifies sync pulses, decodes data bits, and performs parity checking. The HI-15530 supports the 1Mbit/s data rate of Mil-Std1553 over the full temperature and voltage range. For applications requiring small footprints and low cost, the HI-15530 is available in a 24-pin plastic SOIC package. Ceramic DIP and LCC packages are also available to achieve the highest level of reliability and to provide drop-in replacement for obsolete parts from other manufacturers. FEATURES ! Mil-Std-1553 compatible ! Interfaces to HI-1567 Transceiver ! Small footprint 24-pin plastic SOIC package option ! Direct replacement for: Harris HD15530 GEC Plessey Semiconductors MAS15530 Aeroflex ACT15530 ! 1.25 Mbit/s Data Rate ! Manchester II Encode and Decode ! Sync identification and Lock-in ! Clock recovery PIN CONFIGURATION (Top View) VALID WORD 1 2 3 4 5 6 7 8 9 24 VDD 23 ENCODER CLK 22 SEND CLK IN APPLICATIONS ! Mil-Std-1553 Interfaces ! ARINC 708A Interfaces ! Smart Munitions ! Stores management ! Sensor interfaces ! Instrumentation ENCODER SHIFT CLK TAKE DATA SERIAL DATA OUT DECODER CLK BIPOLAR ZERO IN BIPOLAR ONE IN UNIPOLAR DATA IN DECODER SHIFT CLK HI-15530PSI 21 SEND DATA 20 SYNC SELECT 19 ENCODER ENABLE 18 SERIAL DATA IN 17 BIPOLAR ONE OUT 16 OUTPUT INHIBIT 15 BIPOLAR ZERO OUT 14 ÷ 6 OUT 13 MASTER RESET COMMAND / DATA SYNC 10 DECODER RESET 11 GND 12 24 Pin SOIC package HOLT INTEGRATED CIRCUITS (DS15530 Rev. A) 07/01 HI-15530 PIN DESCRIPTIONS SIGNAL VALID WORD ENCODER SHIFT CLOCK TAKE DATA SERIAL DATA OUT DECODER CLOCK BIPOLAR ZERO IN BIPOLAR ONE IN UNIPOLAR DATA IN DECODER SHIFT CLOCK COMMAND / DATA SYNC FUNCTION OUTPUT OUTPUT OUTPUT OUTPUT INPUT INPUT INPUT INPUT OUTPUT OUTPUT DESCRIPTION A high output signals the receipt of a valid word Shifts data into the encoder on a low to high transition Output is high during receipt of data after identification of a Sync Pulse and two valid Manchester data bits. Received Data output in NRZ format 12x the data rate. Clock for the transition finder and synchronizer, which generates the internal clock for the remainder of the decoder A high input indicates the 1553 bus is in its negative state. This pin must be held high when the Unipolar input is used A high input indicates the 1553 bus is in the positive state. This pin must be held low when the Unipolar input is used Input for unipolar data to the transition finder. Must be held low when not in use Provides the DECODER CLOCK divided by 12, synchronized by the recovered serial data A high on this pin occurs during the output of decoded data which was preceded by a Command (or Status) synchronizing character. A low output indicates a Data synchronizing character A high applied to this pin during a DECODER SHIFT CLOCK rising edge resets the bit counter 0V supply A high on this pin clears 2:1 counters in both Encoder and Decoder, and resets the divide-by-6 circuit Provides ENCODER CLOCK divided by 6 An active low output intended to drive the zero or negative sense of a MIL-STD-1553 Line Driver A low inhibits the BIPOLAR ZERO OUT and BIPOLAR ONE OUT by forcing them to inactive high states An active low output intended to drive the one or positive sense on a MIL-STD-1553 Line Driver Receiver serial data at the rate of the ENCODER SHIFT CLOCK A high on this pin initiates the encode cycle. (Subject to the preceeding cycle being complete) Actuates a Command Sync for an input high and a Data Sync for a low An active high output which enables the external source of serial Data Clock input at 2 times the Data rate, usualy driven by ÷6 OUT Input to the divide by 6 circuit. Normal frequency is Data rate x12 5V +/- 10% DECODER RESET GND MASTER RESET ÷6 OUT BIPOLAR ZERO OUT OUTPUT INHIBIT BIPOLAR ONE OUT SERIAL DATA IN ENCODER ENABLE SYNC SELECT SEND DATA SEND CLOCK IN ENCODER CLOCK VDD INPUT POWER INPUT OUTPUT OUTPUT INPUT OUTPUT INPUT INPUT INPUT OUTPUT INPUT INPUT POWER HOLT INTEGRATED CIRCUITS 2 HI-15530 ENCODER OPERATION The encoder requires a single clock with a frequency of twice the desired rate applied at the SEND CLOCK input. An auxiliary divide by six counter is provided on chip which can be utilized to produce the SEND CLOCK by dividing the ENCODER CLOCK. The Encoder's cycle begins when ENCODER ENABLE is high during a falling edge of ENCODER SHIFT CLOCK (1). This cycle lasts for one word length or twenty ENCODER SHIFT CLOCK periods. At the next low-to-high transition of the ENCODER SHIFT CLOCK, a high at SYNC SELECT input actuates a command sync or a low will produce a data sync for that word (2). When the Encoder is ready to accept data, the SEND DATA output will go high and remain high for sixteen ENCODER SHIFT CLOCK periods (3). During these sixteen periods the data should be clocked into the SERIAL DATA input with every low-to-high transition of the ENCODER SHIFT CLOCK (3) - (4). After the sync and the Manchester II coded data are transmitted through the BIPOLAR ONE and BIPOLAR ZERO outputs, the Encoder adds on an additional bit which is the parity for that word (5). If ENCODER ENABLE is held high continuously, consecutive words will be encoded without an interframe gap. ENCODER ENABLE must go low by time (5) as shown to prevent a consecutive word from being encoded. At any time a low on the OUTPUT INHIBIT input will force both bipolar outputs to a high state but will not affect the Encoder in any other way. To abort the Encoder transmission a positive pulse must be applied at MASTER RESET. Anytime after or during this pulse, a low to high transition on SEND CLOCK clears the internal counters and initializes the Encoder for a new word. MASTER RESET OUTPUT INHIBIT SEND CLK IN ÷ 6 OUT BIPOLAR ONE OUT ÷2 ÷6 Character Former BIPOLAR ZERO OUT ENCODER CLK Bit Counter SERIAL DATA IN ENCODER ENABLE SYNC SELECT SEND DATA ENCODER SHIFT CLK TIMING 0 1 2 3 4 5 6 7 15 16 17 18 19 SEND CLK ENCODER SHIFT CLK ENCODER ENABLE DON’T CARE SYNC SELECT VALID DON’T CARE SEND DATA SERIAL DATA IN BIPOLAR ONE OUT BIPLOAR ZERO OUT (1) (2) 15 14 13 12 11 10 3 2 1 0 SYNC SYNC 15 14 13 12 11 3 2 1 0 P SYNC SYNC 15 14 13 12 11 3 2 1 0 P (3) (4) (5) HOLT INTEGRATED CIRCUITS 3 HI-15530 DECODER OPERATION The Decoder requires a single clock with a frequency of 12 times the desired data rate applied at the DECODER CLOCK input. The Manchester II coded data can be presented to the Decoder in one of two ways. The BIPOLAR ONE and BIPOLAR ZERO inputs will accept data from a comparator sensed transformer coupled bus as specified in MIL-STD-1553. The UNIPOLAR DATA input can only accept non-inverted Manchester II coded data (e.g. from BIPOLAR ZERO OUT of an Encoder). The Decoder is free running and continuously monitors its data input lines for a valid sync character and two valid Manchester data bits to start an output cycle. When a valid sync is recognized (1), the type of sync is indicated on COMMAND/DATA SYNC output. If the sync character was a command sync, this output will go high (2) and remain high for sixteen DECODER SHIFT CLOCK periods (3), otherwise it will remain low. The TAKE DATA output will go high and remain high (2) - (3) while the Decoder is transmitting the decoded data through SERIAL DATA OUT. The decoded data available at SERIAL DATA OUT is in a NRZ format. The DECODER SHIFT CLOCK is provided so that the decoded bits can be shifted into an external register on every low-to-high transition of this clock (2) - (3). After all sixteen decoded bits have been transmitted (3) the data is checked for odd parity. A high on VALID WORD output (4) indicates a successful reception of a word without any Manchester or parity errors. At this time the Decoder is looking for a new sync character to start another output sequence. VALID WORD will go low approximately 20 DECODER SHIFT CLOCK periods after it goes high if not reset low sooner by a valid sync and two valid Manchester bits as shown (1). At any time in the above sequence, a high input on DECODER RESET during a low-to-high transition of DECODER SHIFT CLOCK will abort transmission and initialize the Decoder to start looking for a new sync character. UNIPOLAR DATA IN BIPOLAR ONE IN BIPOLAR ZERO IN TRANSITION FINDER CHARACTER IDENTIFIER COMMAND/DATA SYNC TAKE DATA SERIAL DATA OUT DECODER CLK MASTER RESET SYNCHRONIZER BIT RATE CLK PARITY CHECK VALID WORD DECODER SHIFT CLK DECODER RESET BIT COUNTER TIMING 0 1 2 3 4 5 6 7 8 16 17 18 19 DECODER SHIFT CLK BIPOLAR ONE IN BIPLOAR ZERO IN SYNC SYNC 15 14 13 12 11 10 2 1 0 P SYNC SYNC 15 14 13 12 11 10 2 1 0 P TAKE DATA COMMAND / DATA SYNC SERIAL DATA OUT UNDEFINED 15 14 13 12 4 3 2 1 0 VALID WORD May be high from previous reception (1)(2) (3) (4) HOLT INTEGRATED CIRCUITS 4 HI-15530 SEND CLK t E1 ENCODER SHIFT CLK t E2 SERIAL DATA IN VALID VALID t E3 SEND CLK ENCODER SHIFT CLK ENCODER ENABLE t E1 t E4 t E5 VALID t E7 t E6 SYNC SELECT ENCODER SHIFT CLK SEND DATA t E8 SEND CLK t E9 BIPOLAR ONE OUT or BIPOLAR ZERO OUT DECODER SHIFT CLK t D6 COMMAND / DATA SYNC t D7 TAKE DATA DECODER SHIFT CLK t D8 SERIAL DATA OUT DATA BIT DECODER SHIFT CLK t D9 COMMAND / DATA SYNC t D10 TAKE DATA t D11 VALID WORD DECODER SHIFT CLK t DRH DECODER RESET t DR t DRS HOLT INTEGRATED CIRCUITS 5 HI-15530 BIT PERIOD BIT PERIOD BIT PERIOD BIPOLAR ONE IN BIPOLAR ZERO IN t D1 t D2 t D1 t D3 t D3 t D2 COMMAND SYNC BIPOLAR ONE IN BIPOLAR ZERO IN t D1 t D3 t D1 t D2 DATA SYNC t D3 t D2 BIPOLAR ONE IN t D3 BIPOLAR ZERO IN t D1 t D1 t D3 t D1 t D3 t D3 t D1 t D5 ONE ZERO t D2 t D2 COMMAND SYNC t D2 t D5 ONE t D4 t D3 t D4 UNIPOLAR IN UNIPOLAR IN DATA SYNC UNIPOLAR IN t D4 ONE ZERO t D5 t D5 t D2 t D4 t D4 ONE Bit Period 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Command Word SYNC SYNC TERMINAL ADDRESS R/T SUBADDRESS / MODE DATA WORD COUNT P Data Word SYNC SYNC DATA WORD P Status Word SYNC SYNC TERMINAL ADDRESS ME CODE FOR FAILURE MODES TF P HOLT INTEGRATED CIRCUITS 6 HI-15530 Supply Voltage VDD -0.3V to +7V Power Dissipation at 25C Plastic SOIC Ceramic DIP DC Current Drain per pin Storage Temperature Range: 1.5 W, derate10mW/°C 1.0 W, derate 7mW/°C ±10mA -65°C to +150°C Voltage at any pin Operating Temperature Range: (Industrial) (Military) -0.3V to Vcc +0.3V -40°C to +85°C -55°C to +125°C NOTE: Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only. Functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. VDD = 5V ±10%, GND = 0V, TA = Operating Temperature Range (unless otherwise specified). PARAMETER Input Voltage Clock Input Voltage Input Leakage Current Output Voltage Standby Supply Current Operating Supply Current Input Capacitance Output Capacitance Input Voltage HI Input Voltage LO Input Voltage HI Input Voltage LO Input Sink Input Source Logic “1” Output Voltage Logic “0” Output Voltage SYMBOL VIH VIL VIHC VILC IIH IIL VOH VOL IDDSB IDD CIN COUT CONDITIONS LIMITS MIN 70% VDD 30% VDD VDD-0.5 0.5V 1.0 -1.0 TYP MAX UNIT V V V V µA µA V V mA mA pF pF IOH=-3mA IOL=1.8mA VIN=VDD, Outputs Open f=1MHz, Outputs Open 2.4 0.4 2.0 10.0 7.0 10.0 HOLT INTEGRATED CIRCUITS 7 HI-15530 VDD = 5V±10%, GND = 0V, TA = Operating Temperature Range, CL=50pF PARAMETER Encoder Timing Encoder Clock Frequency Send Clock Frequency Encoder Clock Rise Time Encoder Clock Fall Time Encoder Data Rate Master Reset Pulse Width Shift Clock Delay Serial Data Setup Time Serial Data Hold Time Enable Setup Time Enable Pulse Width Sync Setup Time Sync Pulse Width Send Data Delay Bipolar Output Delay Enable Hold Time Sync Hold Time SYMBOL LIMITS MIN TYP MAX UNITS fEC fESC tECR tECF fED tMR tE1 tE2 tE3 tE4 tE5 tE6 tE7 tE8 tE9 tE10 tE11 0 0 15 2.5 8 8 MHz MHz ns ns MHz ns ns ns ns ns ns ns ns 0 150 1.25 125 75 75 90 80 55 150 0 10 95 50 130 ns ns ns ns Decoder Timing Decoder Clock Frequency Decoder Clock Rise Time Decoder Clock Fall Time Decoder Data Rate Decoder Reset Pulse Width Decoder Reset Setup Time Decoder Reset Hold Time Master Reset Pulse Width Bipolar Data Pulse Width Sync Transition Span One-Zero Overlap Short Data Transition Span Long Data Transition Span Sync Delay (On) Take Data Delay (On) Serial Data Out Delay Sync Delay (Off) Take Data Delay (Off) Valid Word Delay fDC tDCR tDCF fDD tDR tDRS tDRH tMR tD1 tD2 tD3 tD4 tD5 tD6 tD7 tD8 tD9 tD10 tD11 0 0 0 -20 0 6tDC 12tDC 110 110 80 110 110 110 0 150 75 10 150 tDC+10 18tDC tDC-10 0 15 8 8 1.25 MHz ns ns MHz ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns H OLT INTEGRATED CIRCUITS 8 HI-15530 VALID WORD 1 ENCODER SHIFT CLK 2 TAKE DATA 3 SERIAL DATA OUT 4 DECODER CLK 5 BIPOLAR ZERO IN 6 BIPOLAR ONE IN 7 UNIPOLAR DATA IN 8 DECODER SHIFT CLK 9 COMMAND / DATA SYNC 10 DECODER RESET 11 GND 12 HI-15530CDI HI-15530CDT HI-15530CDM 24 23 22 21 20 19 18 17 16 15 VDD ENCODER CLK SEND CLK IN SEND DATA SYNC SELECT ENCODER ENABLE SERIAL DATA IN BIPOLAR ONE OUT OUTPUT INHIBIT BIPOLAR ZERO OUT 4 3 2 1 28 27 26 25 24 DECODER CLK N/C N/C BIPOLAR ZERO IN BIPOLAR ONE IN UNIPOLAR DATA IN DECODER SHIFT CLOCK 5 6 7 8 9 10 11 SEND DATA N/C N/C SYNC SELECT ENCODER ENABLE SERIAL DATA IN BIPOLAR ONE OUT HI-15530CLI HI-15530CLT HI-15530CLM 23 22 21 20 19 12 13 14 15 16 17 18 14 ÷ 6 OUT 13 MASTER RESET 24 - Pin Ceramic Side-Brazed DIP 28 - Pin Ceramic LCC PART NUMBER HI-15530CDI HI-15530CDT HI-15530CDM HI-15530PSI HI-15530PST HI-15530CLI HI-15530CLT HI-15530CLM PACKAGE DESCRIPTION 24 PIN CERAMIC SIDE BRAZED DIP 24 PIN CERAMIC SIDE BRAZED DIP 24 PIN CERAMIC SIDE BRAZED DIP 24 PIN PLASTIC SOIC 24 PIN PLASTIC SOIC 24 PIN CERAMIC LEADLESS CHIP CARRIER 24 PIN CERAMIC LEADLESS CHIP CARRIER 24 PIN CERAMIC LEADLESS CHIP CARRIER TEMPERATURE RANGE -40°C TO +85°C -55°C TO +125°C -55°C TO +125°C -40°C TO +85°C -55°C TO +125°C -40°C TO +85°C -55°C TO +125°C -55°C TO +125°C FLOW BURN IN I T M I T I T M NO NO YES NO NO NO NO YES LEAD FINISH GOLD GOLD SOLDER SOLDER SOLDER GOLD GOLD SOLDER H OLT INTEGRATED CIRCUITS 9 HI-15530 24-PIN PLASTIC SSOP Package Type: 24HS .323 ± .012 (8.20 ± .30) .006 TYP (.15) .307 ± .016 (7.80 ± .40) .209 ± .012 (5.30 ± .30) SEE DETAIL A .012 TYP (.30) .095 ± .005 (2.413 ± .127) 0° to 8° .026 TYP (.65) .030 ± .008 (.75 ± .20) DETAIL A .005 ± .001 (.13 ± .08) 24-PIN CERAMIC SIDE-BRAZED DIP Package Type: 24C 1.220 MAX (30.988 MAX) .610 ± .010 (15.494 ± .254) .595 ± .010 (15.113 ± .254) .225 MAX (5.715 MAX) .050 TYP (1.270 TYP) .085 ± .009 (2.159 ± .229) .600 ± .010 (15.240 ± .254) .125 MIN (3.175 MIN) .018 TYP (.457 TYP) .100 BSC (2.540 BSC) .010 + .002/−.001 (.254 + .051/−.025) HOLT INTEGRATED CIRCUITS 10 HI-15530 28-PIN CERAMIC LEADLESS CHIP CARRIER Package Type: 28S .020 INDEX (.508 INDEX) PIN 1 .080 ± .020 (2.032 ± .508) PIN 1 .050 ± .005 (1.270 ± .127) .451 ± .009 (11.455 ± .229) SQ. .050 BSC (1.270 BSC) .008R ± .006 (.203R ± .152) .040 x 45° 3PLS (1.016 x 45° 3PLS) .025 ± .003 (.635 ± .076) H OLT INTEGRATED CIRCUITS 11