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FUJITSU MAS3367 User Manual

Page 79

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3.1 Control/Sense Commands

C141-E167

3 -

17

* Set at shipping time

b) UNTATN (UNIT ATTENTION report mode)

This specifies the response method to commands received from the INIT when the IDD is
holding a UNIT ATTENTION condition:

"1"* (Report):

The IDD reports a CHECK CONDITION status (Standard SCSI specification)
in response to commands other than INQUIRY and REQUEST SENSE.

"0" (No Report): The IDD terminates all commands that are received normally. (A CHECK

CONDITION status which causes a UNIT ATTENTION condition is not
reported.)

* Set at shipping time

c) SDTR (synchronous data transfer request)

Specifies whether or not it is permitted for the TARG to request a synchronous mode data
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.

"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.

* 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.

"0" (Block):

The CRC bytes are sent or recieved in each block boundary.

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