Standby (E2H/96H); Table 120: Standby (E2H/96H) - Hitachi HTS548040M9AT00 Specifications

13.39 Standby (E2h/96h)

Table 120: Standby (E2h/96h)

Command Block Output Registers
Register
Data
Feature
Sector Count
LBA Low
LBA Mid
LBA High
Device
Command
Error Register
7 6 5
CRC UNC 0
0 0 0
The Standby command causes the device to enter the Standby Mode immediately and to set the auto power down
time-out parameter (standby timer).
When this command is issued, the device confirms the completion of the cached write commands before it asserts
the INTRQ. Following the INTRQ the interface remains active and the device is spun down. If the device is
already spun down, the spin down sequence is not executed.
During the Standby mode the device will respond to commands, however there will be a delay while waiting for
the spindle to reach operating speed.
The timer starts counting down when the device returns to Idle mode.
Output parameters to the device
Sector Count The Time-out Parameter. If it is zero, the time-out interval (Standby Timer) is NOT disabled but is
automatically set to 109 minutes. If it is other than zero the time-out interval is set for (Time-out
Parameter × 5) seconds.
When the automatic power down sequence is enabled, the device will enter the Standby mode
automatically if the time-out interval expires with no device access from the host. The time-out
interval will be reinitialized if there is a device access before the time-out interval expires.
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
V V V V V V V V
- - - - - - - -
- - - - - - - -
- - - - - - - -
1 - 1 D - - - -
1 1 1 0 0 0 1 0
4 3 2 1
IDN 0 ABT T0N AMN
0 0 V 0
Travelstar 5K80 Hard Disk Drive Specification
Command Block Input Registers
Register
Data
Error
Sector Count
LBA Low
LBA Mid
LBA High
Device
Status
0 7 6
BSY RDY DF DSC DRQ
0 0 V
171
7 6 5 4 3 2 1 0
- - - - - - - -
see below
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
see below
Status Register
5 4 3 2
COR IDX
0 V - 0
1 0
ERR
- V