5-2.4 Disconnect/Reconnect Control Parameters; Table 5-7. Page 02 - Disconnect/Reconnect Parameters; Table 5-8. Page 02 - Disconnect/Reconnect Parameters Field Description - Fujitsu M2488 Product Manual

M2488 PRODUCT GUIDE
5-2.4 Disconnect/Reconnect Control Parameters
These parameters provide the initiator with the means to tune the SCSI bus.

Table 5-7. Page 02 - Disconnect/Reconnect Parameters

BYTES 7
0 PS * Reserved
1
2
3
4-5
6-7
8-9
10-11
12
13-15
* The PS bit must be set to 0 on a MODE SELECT command.
Note: Changeable fields in this page are shaded.

Table 5-8. Page 02 - Disconnect/Reconnect Parameters Field Description

BYTE BIT VALUE
2-3
4-5
6-7
April 1997
BITS
6 5 4
Additional Page Length
Read Buffer Full Ratio
Write Buffer Empty Ratio
Bus Inactivity Time
Disconnect Time Limit
Connect Time Limit
Maximum Burst Size
Reserved
Reserved
0 The Read Buffer Full Ratio and Write Buffer Empty Ratio fields indicate how full
the buffer should be on a read command or how empty the buffer should be on a
write command before the target attempts reselection.
These fields are not supported, and are reported as NOT changeable on a MODE
SENSE command. The default values are zero.
0 The Bus Inactivity Limit field indicates the maximum time, in 100 microsecond
increments, that the target is allowed to maintain the bus busy without handshakes
until it must disconnect. A value of zero in this field indicates that there is no Bus
Inactivity Limit.
The Bus Inactivity Limit field is reported as not changeable on a MODE SENSE
command, and the default value is zero.
>0 A non-zero value in the Disconnect Time Limit field indicates the minimum time, in
100 microsecond increments, that the target remains disconnected for the specified
LUN until it attempts to reconnect.
0 A value of zero in this field indicates that the target is allowed to reconnect immedi-
ately.
The Disconnect Time Limit field is reported as changeable on a MODE SELECT
command, and the default value is zero.
CG00000-011503 REV. A
TAPE UNIT PARAMETERS
3 2 1
Page Code
DTDC
DESCRIPTION
MODE
SENSE
DEFAULT
0
VALUES
82h
0Eh
00h
00h
0000h
0000h
0000h
0000h
0000h
0000h
5-7