Fujitsu MBA3073 SERIES Technical Manual page 54

(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.
(33) pCRC Transmit hold time
The minimum time provided by the transmitter between the transition of the REQ signal and the
transition of the P_CRCA signal while pCRC protection is enabled.
(34) pCRC Transmit setup time
The minimum time provided by the transmitter between the transition of the P_CRCA signal and
the transition of the REQ signal while pCRC protection is enabled.
Specified to provide the increased receive setup time, subject to intersymbol interference, cable
skew, and other distortions.
(35) Receive REQ assertion period with P_CRCA transitioning
The minimum time required at a SCSI device receiving a REQ signal for the signal to be asserted
while using synchronous data transfers with P_CRCA transitioning with pCRC protection enabled.
Specified to ensure that the assertion period is longer than the receive hold time plus the receive
setup time.
(36) Receive REQ negation period with P_CRCA transitioning
The minimum time required at a SCSI device receiving an REQ signal for the signal to be negated
while using synchronous data transfers with P_CRCA transitioning with pCRC protection enabled.
Specified to ensure that the negation period is longer than the receive hold time plus the receive
setup time.
48 C141-C015