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Transceiver Mode
Sent PCOMP_EN
Received PCOMP_EN
Sub-page 04h—Report Transfer Capabilities
7
0
1
2
3
4
5
7
Minimum Transfer Period Factor 08h The smallest value of the transfer period factor supported. For
Maximum Req/Ack Offset
Maximum Transfer Width
Exponent
Protocol Option Bits Supported C3h. The protocol options supported. The value of C3h indicates that
90
Commands
The current bus mode:
Code
Bus Mode
Unknown
00b
01b
SE
10b
LVD
11b
HVD (Note that this will never be reported since the drive will
not operate on an HVD bus)
The value of the PCOMP_EN bit sent. This will be set if PCOMP_EN has
been negotiated successfully.
The value of the PCOMP_EN bit received. This will be set if PCOMP_EN has
been negotiated successfully.
6
5
4
Minimum Transfer Period Factor (08h)
Reserved (0)
Maximum Req-Ack Offset (40h)
Maximum transfer Width Exponent (1)
Protocol Option Bits Supported (C3h)
Reserved (0)
Gen 3 SCSI, this is 8, in other words, FAST160.
40h The maximum value for the Req/Ack offset. For Gen 3 SCSI, this
is 64 (40h).
1
The maximum width supported. For Gen 3 SCSI, this is 1.
PCOMP_EN, RTI, DT_REQ and IU_REQ are supported and
RD_STRM, WR_FLOW, HOLD_MCS and QAS_REQ are not.
See the Protocol Options Bits field on sub-page 03h (Negotiated
Settings) on page 89 for details of the bits.
3
2
1
0
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