I-bus/Phoenix G8, User Manual

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A1-8 G8 CPCI Enclosure User’s Guide
Appendix 1 - Technical Reference
EIDEb (ATA-2), IOCS16b_ Indicates a 16-bit register has
TLL levels been decoded
DMARQb Drive DMA request
DMAKb_ Drive DMA acknowledge
DIORb_ Drive I/O read
DIOWb_ Drive I/O write
DASPb_ Drive active/slave present
IORDYb Indicates drive is ready
for I/O cycle(s)
DD[15:0]b Drive data lines, bits 15--0
DRESETb_ Drive reset signal
CS1FXb_ Chip select drive 0, also command
register block select
CS3FXb_ Chip select drive 1, also command
register block select
DA[2:0]b Drive register and data port
address lines
INTRQb Drive interrupt request
PDIAGb_ Passed diagnostics output from
drive 1 and monitored by drive 0
SCSI, XT310 ATN_ Attention
SPI/single ended BSY_ Busy
levels 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
TERMPWR SCSI terminator power
NDET_ Narrow detect, may be pulled low
to indicate that bits [7:0] are
connected
WDET_ wide detect, may be pulled low to
indicate that bits [15:8] are
connected