CMOS SCSI Protocol Controller

www.DataSheet4U.com ********** C-MOS SCSI PROTOCOL CONTROLLER —TOP VIEW— SYM53CF92A-64QFP (1/3) IL22 48 45 40 35 GND 49 50 GND VDD (+5 V) GND 33 32 GND 30 55 GND 25 GND 60 VDD (+5 V) 64 GND GND 20 VDD (+5 V) GND GND VDD (+5 V) 17 1 5 10 15 16 (VDD = +5 V) PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 I/O — O I I — I/O I/O I/O — I/O I/O I/O — I/O I/O I/O SIGNAL GND DREQ PIN NO. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 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 SIGNAL VDD SD0 SD1 SD2 GND SD3 SD4 SD5 SD6 GND SD7 SDP PIN NO. 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 I/O I/O I/O I/O — I/O I/O I/O — I O — I I I I I SIGNAL PIN NO. 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 I/O I I — I I I I/O I/O I/O I/O — I/O I/O I/O I/O — SIGNAL A0 A1 GND A2-DBRD A3-ALE RST MSG SEL GND DACK DBWR VDD DB0 DB1 DB2 GND DB3 DB4 DB5 GND DB6 DB7 DBP CD REQ IO VDD MODE TESTIN PAD0 PAD1 PAD2 PAD3 GND PAD4 PAD5 PAD6 PAD7 VDD INT GND RESET ATN BSY GND WR RD CS CLK ACK www.DataSheet4U.com SYM53CF92A-64QFP (2/3) INPUT A0, A1 A2 - DBRD A3 - ALE CLK CS DACK DBWR MODE RD RESET TESTIN WR OUTPUT DREQ ; ; ; ; ; ; ; ; ; ; ; ; ADDRESS ADDRESS/READ SIGNAL FOR THE DMA DATA BUS ADDRESS CLOCK CHIP SELECT DMA ACKNOWLEDGE DMA WRITE SIGNAL MODE SELECT (PAD BUS/ADDRESS CONTROL BUS) REGISTER READ SIGNAL CHIP RESET TEST REGISTER WRITE SIGNAL INT ; DMA REQUEST SIGNAL ; OPEN-DRAIN INTERRUPT SIGNAL INPUT/OUTPUT ; SCSI I/O ACK ; OPEN-DRAIN OUTPUT, SCHMITT TRIGGER INPUT ATN ; OPEN-DRAIN SCSI I/O BSY ; SCSI PHASE SIGNAL CD DB0 - DB7 ; DMA DATA BUS DBP ; ODD PARITY FOR DB0-DB7 ; SCSI PHASE SIGNAL IO ; SCSI PHASE SIGNAL MSG PAD0 - PAD7 ; PROCESSOR ADDRESS-DATA BUS ; SCSI I/O REQ ; OPEN-DRAIN SCSI I/O RST SD0 - SD7 ; SCSI DATA BUS SDP ; SCSI DATA/PARITY OUTPUT BUS ; OPEN-DRAIN SCSI I/O SEL www.DataSheet4U.com SYM53CF92A-64QFP (3/3) 2 6 - 8, 10 - 12, 14 -16 DREQ DB0 - DB7, DBP FIFO (16 x 9-bit) PARITY GENERATOR AND CHECKER STEERING LOGIC 24-bit TRANSFER COUNT 18 - 20, 22 - 25, 27 SD0 - SD7 39 38 53 - 58, 60 - 63 PAD0 - PAD7 CONFIGURATION REGISTERS 1-4 24-bit TRANSFER COUNTER 37 48 µA DRIVERS STATUS REGISTER 35 34 33 DESTINATION ID SEQUENCER COMMAND REGISTER SYNC OFFSET SYNC PERIOD TIME OUT CLK CONVERSION 48 46 32 30 29 28 IO REQ CD SEL MSG RST ACK BSY ATN SDP INTERRUPT REGISTER SEQUENCE STEP SCSI CONTROL SEQUENCE MODE CLK 42 INT RD 45 WR 47 CS 3 DACK A3-ALE A2-DBRD A1 A0 53 52 50 49 4 41 44 54 READ/WRITE CONTROL DBWR MODE RESET TESTIN