Fujitsu MAN3735 Manual Do Utilizador
C141-E124-01EN
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c) SDTR (synchronous data transfer request)
Specifies whether or not it is permitted for the TARG to request a synchronous mode data
transfer.
transfer.
"1" (Permitted) : After the power is switched on, after a RESET condition occurs or when the
first command is received following reception of a BUS DEVICE RESET
message, if a SYNCHRONOUS DATA TRANSFER REQUEST (SDTR)
message is not sent by the INIT, the IDD sends the SDTR message and
attempts to establish synchronous mode data transfer.
message, if a SYNCHRONOUS DATA TRANSFER REQUEST (SDTR)
message is not sent by the INIT, the IDD sends the SDTR message and
attempts to establish synchronous mode data transfer.
"0"* (Prohibited): Even if it is necessary to establish synchronous mode data transfer, no
SDTR message is sent from the IDD. However, if a SDTR message is sent
from the INIT, the IDD responds normally.
from the INIT, the IDD responds normally.
* Set at shipping time
d) RSRTY (reselection retry)
This specifies the number of retries in the RESELECTION phase.
"1" *:
Unlimited
"0":
10 times
* Set at shipping time
e) PHSCRC (Phase CRC)
This bit specifies where send or receive the CRC bytes in the DT Data IN/OUT transfer.
"1" (Phase):
After the all transfer is terminated or before the phase during data transfer
changes other phase, the CRC bytes are sent or recieved.
changes other phase, the CRC bytes are sent or recieved.
"0"* (Block):
The CRC bytes are sent or recieved in each block boundary.
* Set at shipping time
f)
ACE (AIP checking enabled)
This specifies whether or not it is permitted to check AIP (Asynchronous Information
Protection).
Protection).
"1" (Permitted):
Permitting check
"0"*(Prohibited): Prohibiting check
* Set at shipping time