Table 52 Error Recovery Control Command (Inputs); Table 53 Error Recovery Control Command (Onputs) - Hitachi HDS723020BLA642 Specifications

9.18.3.2
Error Recovery Control command (action code : 0003h)
Inputs: (Key Sector)
Word Name
0 Action Code
1 Function Code
2 Selection Code
3 Value
255:4 reserved

Table 52 Error Recovery Control command (Inputs)

Outputs: (TF Data)
Command Block Input Registers (Success)
Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status

Table 53 Error Recovery Control command (Onputs)

The Error Recovery Control command can be used to set time limits for read and write error recovery. For
non-queued commands, these timers apply to command completion at the host interface. For queued
commands where in order data delivery is enabled, these timers begin counting when the device begins to
execute the command, not when the command is sent to the device. These timers do not apply to streaming
commands, or to queued commands when out-of-order data delivery is enabled.
These command timers are volatile. The default value is 0 (i.e. disable command time-out).
Value Description
0003h Set the read and write error recovery time
0001h Set New Value
0002h Return Current Value
0001h Read Timer
0002h Write Timer
Word If the function code is 0001h, then this field contains the
recovery time limit in 100ms units. The minimum SCT
timeout value is 65 (=6.5 second). When the specified time
limit is shorter than 6.5 second,the issued command is
aborted.
0000h
If Function Code was 0002h, then this is the LSB of the requested recovery limit.
Otherwise, this field is reserved.
If Function Code was 0002h, then this is the MSB of the requested recovery limit.
Otherwise, this field is reserved.
Hitachi hard disk drive specifications
00h
reserved
reserved
reserved
50h
96