Fibre Channel Interface Manual, Rev. D 22112.13.3 Disconnect/Reconnect Control page (02h)The Disconnect/Reconnect Control page implementation is defined in Table 148. This table summarizes the function and defines the default values.See individual drive’s Product Manual, Volume 1, section showing changeable values. A value of zero (0) means this bit function is not directly changeable by an initiator; a value of 1 means the bit function is directly changeable by an initiator (see Mode Select command).
Field definitions (listed alphabetically)
Buffer Empty Ratio
This number is the numerator of a fractional multiplier that has 256 (100h) as its denominator. This field indicates, on Write
commands, how empty the disc drive’s buffer will be before attempting to arbitrate from control of the loop. The disc drive,
rounds the requested ratio down to the nearest whole logical block. This value is changeable by an initiator.
Buffer Full Ratio
This number is the numerator of a fractional multiplier that has 256 (100h) as its denominator. This field indicates, on Read
commands, how full the disc drive’s buffer will be before attempting to arbitrate for control of the loop. The disc drive rounds
the requested ratio up to the nearest whole logical block. This value is changeable by an initiator.
Table 148: Disconnect/Reconnect Control page (02h)
Bit
Byte
76543210
Page descriptor header
0 1 0000010
PS Page Code (02h)
1Page Length (0Eh)
Disconnect/reconnect control parameters
2
Default Buffer Full Ratio
3
Default Buffer Empty Ratio
4
Default Bus Inactivity Limit (MSB)
5
Default Bus Inactivity Limit (LSB)
6,7
Default Disconnect Time Limit
8,9
Default Connect Time Limit
10,11
Default
MSB
Maximum Burst Size
LSB
12
Default EMDP 000
DImm DTDC
13–15 Reserved
Table
number
148
148