Fujitsu MAW3073 SERIES Specifications page 52

(18) System deskew delay
The minimum time that a SCSI device should wait after receiving a SCSI signal to ensure that any
signals transmitted at the same time are valid. The system deskew delay shall not be applied to the
synchronous data transfers.
(19) Receive assertion period
The minimum time required at a SCSI device receiving a REQ signal for the signal to be asserted
while using synchronous data transfers provided P_CRCA is not transitioning with pCRC
protection enabled. Also, the minimum time required at a SCSI device receiving an ACK signal
for the signal to be asserted while using synchronous data transfers. For SE fast-5 and fast-10
operation, the time period is measured at the 0.8 V level. For SE fast-20 operation the period is
measured at the 1.0 V level. For LVD see figure 1.19 and 1.20 for signal measurement points.
(20) Receive hold time
For ST data transfers the minimum time required at the receiving SCSI device between the
assertion of the REQ or ACK signal and the changing of the DB(15-0, P_CRCA, and/or P1)
signals while using synchronous data transfers, provided P_CRCA is not transitioning with pCRC
protection enabled.
For DT data transfers the minimum time required at the receiving SCSI device between the
transition (i.e. assertion or negation) of the REQ or ACK signals and the changing of the DB(15-0,
P_CRCA, and/or P1) signals while using synchronous data transfers.
(21) Receive negation period
The minimum time required at a SCSI device receiving a REQ signal for the signal to be negated
while using synchronous data transfers. Also, the minimum time required at a SCSI device
receiving an ACK signal for the signal to be asserted while using synchronous data transfers. For
SE fast-5 and fast-10 operation, the time period is measured at the 2.0 V level. For SE fast-20
operation the period is measured at the 1.9 V level. For LVD see figure 1.19 and figure 1.20 for
signal measurement points.
(22) Receive setup time
For ST data transfers the minimum time required at the receiving SCSI device between the
changing of the DB(15-0, P_CRCA, and/or P1) signals and the assertion of the REQ or ACK
signal while using synchronous data transfers.
For DT data transfers the minimum time required at the receiving SCSI device between the
changing of the DB(15-0, P_CRCA, and/or P1) signals and the transition of the REQ or ACK
signals while using synchronous data transfers.
(23) Receive REQ(ACK) period tolerance
The minimum tolerance that a SCSI device should allow to be subtracted from the REQ(ACK)
period. The tolerance comprises the Transmit REQ(ACK) tolerance plus a measurement error due
to noise.
1-34 C141-C011