Fujitsu MAX3073NC - SCSI,80, Dell DC961,Hard Drive Scsi Logical Interface Specifications page 196

Parameter Data Formats
Note:
If the value specified for the "buffer full ratio" or the "buffer empty ratio" is not within double
the integral boundary of the logical data block length, the IDD rounds up the specified value to
the value which is the nearest data block boundary. Also, if zero is specified in any of these
parameters. If X'00'is specified, the IDD assigns an appropriate value for this parameter that is
determined by IDD.
SELECT or MODE SELECT EXTENDED command are held as is and those values are
reported in response to a MODE SENSE or MODE SENSE EXTENDED command.
(Rounding processing of the parameters is not done by the IDD.)
c. Bus inactivity limit
This parameter indicates the maximum time that the TARG is permitted to keep the SCSI bus in the
busy state (BSY signal = TRUE) without executing a REQ/ACK handshake, in multiples of 100 µs.
In the IDD, this value is 100 µs during normal operation. It is impossible for this parameter to be
changed by the INIT. The IDD disregards the value specified in this parameter and operates
according to the "Default" value.
d. Disconnect time limit
This parameter specifies the maximum time that the TARG is permitted to continue in the disconnect
state until it starts reconnect processing, in multiples of 100 µs.
In the IDD, this value is 0 µs. It is impossible for this parameter to be changed by the INIT. The
IDD disregards the value specified in this parameter and operates according to the "Default" value.
e Connect time limit
This parameter specifies the maximum time that the TARG is permitted to use the SCSI bus until it
starts disconnect processing, in multiples of 100 µs.
In the IDD, this value is unlimited. It is impossible for this parameter to be changed by the INIT.
The IDD disregards the value specified in this parameter and operates according to the "Default"
value.
f. Maximum burst size
This parameter specifies the maximum volume of data the TARG is permitted to transfer
continuously in the DATA IN phase or the DATA OUT phase until it starts disconnect processing, in
multiples of number of bytes per sector.
In the IDD, this value is unlimited. It is impossible for this parameter to be changed by the INIT.
The IDD disregards the value specified in this parameter and operates according to the "Default"
value.
g. Data transfer disconnect control (DTDC)
DTDC: Controls how to perform disconnection.
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However, parameter values specified from the INIT in the MODE
C141-C010