Reference Guide

Chapter 4 SCSI Commands
MODE SENSE (6) / (10) Command (1Ah / 5Ah)
DLT-S4 Interface Reference Guide 192
SPI Negotiated Settings
Mode Subpage (19h/03h)
4
The SPI Negotiated Settings Mode Subpage, shown in figure 101, is used
to report the negotiated settings of a SCSI target port for the current I_T
nexus for Parallel SCSI only. For additional information, see figure 68
.
Figure 101 Parallel SCSI —
SPI Negotiated Settings Mode
Subpage — Data Format
Note:
The values reported in this page pertain to protocol options
negotiated or established on the SCSI Parallel interface used to
transfer the data. None of these parameters are changeable
with a
MODE SELECT command. For a description of the
possible settings, see the SCSI Parallel Interface - 5 (SPI-5)
standard.
Bit
7 6 5 4 3 2 1 0
Byte
0 PS (0) SPF (1) Page Code (19h)
1 Subpage Code (03h)
2 — 3
(MSB)
Page Length (0Ah)
(LSB)
4 Reserved
5 Reserved Protocol Identifier (1h)
6 Transfer Period Factor
7 Reserved
8 REQ/ACK Offset
9 Transfer Width Exponent
10 Reserved Protocol Options Bits
11 Reserved Transceiver Mode
Sent
PCOMP_EN
Received
PCOMP_EN
12 Reserved
13 Reserved