Fujitsu MAN3184 SERIES Specifications page 51

(26) Transmit assertion period
The minimum time that a target shall assert the REQ signal while using synchronous data transfers
provided P_CRCA is not transitioning with pCRC protection enabled. Also, the minimum time
that an initiator shall assert the ACK signal while using synchronous data transfers.
(27) Transmit hold time
For ST data transfers the minimum time provided by the transmitting 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.
For DT data transfers the minimum time provided by the transmitting 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.
(28) Transmit negation period
The minimum time that a target shall negate the REQ signal while using synchronous data transfers
provided P_CRCA is not transitioning with pCRC protection enabled. Also, the minimum time
that an initiator shall negate the ACK signal while using synchronous data transfers.
(29) Transmit setup time
For ST data transfers the minimum time provided by the transmitting 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 provided by the transmitting SCSI device between the
changing of the DB(15-0, P_CRCA, and/or P1) signals and the transition of the REQ or ACK
signal while using synchronous data transfers.
(30) Transmit REQ (ACK) period tolerance
The maximum tolerance that a SCSI device may subtract from the negotiated synchronous period.
The tolerance comprises the transmit REQ (ACK) tolerance plus a measurement error due to noise.
(31) pCRC Receive hold time
The minimum time required at the receiver between the transition of the REQ signal and the
transition of the P_CRCA signal while pCRC protection is enabled.
(32) pCRC Receive setup time
The minimum time required at the receiver between the transition of the P_CRCA signal and the
transition of the REQ signal while pCRC protection is enabled.
Specified to ease receiver timing requirements and ensure that this signal, which is outside CRC
protection, is received correctly.
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