Fujitsu MAX3073NC - SCSI,80, Dell DC961,Hard Drive Scsi Logical Interface Specifications page 225

Specifications
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d. Protocol Option Bits
This field indicates the protocol options established by the current I_T NEXAS.
Bit
Bit name
7
PCOMP_EN (*1)
6
RTI
5
RD_STRM
4
WR_FLOW
3
HOLD_MCS
2
QAS_REQ
1
DT_REQ
0
IU_REQ
*1 The PCOM_EN bit is reserved on this subpage and is used on subpage 4.
e. Received (RCVD) PCOMP_EN
This bit indicates the PCOM_EN bit received by the SCSI target port of the current I_T NEXAS.
f. Sent PCOMP_EN
This bit indicates the PCOM_EN bit sent from the SCSI target port of the current I_T NEXAS.
g. Transceiver Mode
This field indicates as follows the current bus mode of the SCSI target port.
Value
00b
01b
10b
11b
C141-C010
Parameter
Precompensation enable
Retain training information
Read streaming and read flow control enable
Write flow control enable
Hold margin control setting
QAS enable request
DT clocking enable request
Information units enable request
Parameter
Unclear (device that can report no bus mode, etc.)
Single ended
Low Voltage Differential
High Voltage Differential
4.1 Mode Parameters
4-41

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