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Connectors and Components on the CPV5000
IORDYb - indicates drive is ready for I/O cycle(s)
DD[15:0]b - drive data lines, bits 15-0
DRESET*b - drive reset signal
3
CS1FX*b - chip select drive 0, also command register block select
CS3FX*b - chip select drive 1, also command register block select
DA[2:0]b - drive register and data port address lines
INTRQb - drive interrupt request
PDIAG*b - passed diagnostics output from drive 1 and monitored by drive 0
SCSI, X3T10 SPI/single ended levels
ATN* - Attention
BSY* - Busy
C/D* - Command or Data
I/O* - Input or Output data direction
MSG* - Message phase
ACK* - Acknowledge
SCD[15:0]* - SCSI data lines
SCDPH* - SCSI parity high byte, provides parity for SCD[15:8]
SCDPL* - SCSI parity low byte, provides parity for SCD[7:0]
SEL* - Select
REQ* - Request
SRST* - SCSI bus reset
GND/NDET* - narrow detect, may be pulled low to indicate that bits[7:0] are
connected (GND on CPV5000)
GND/WDET* - wide detect, may be pulled low to indicate that bits[15:8] are
connected (GND on CPV5000)
GND/SLED* - SCSI active LED signal, TTL active low (GND on CPV5000)
3-10
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