Datasheet

Travelstar 80GN Hard Disk Drive Specification

176

13.39 Standby (E2h/96h)

Table 122: Standby (E2h/96h)

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.

Command Block Output Registers Command Block Input Registers

Data - - - - - - - - Data - - - - - - - -

Feature - - - - - - - - Error see below

Sector Count V V V V V V V V Sector Count - - - - - - - -

LBA Low - - - - - - - - LBA Low - - - - - - - -

LBA Mid - - - - - - - - LBA Mid - - - - - - - -

LBA High - - - - - - - - LBA High - - - - - - - -

Device 1 - 1 D - - - - Device - - - - - - - -

Command 1 1 1 0 0 0 1 0 Status see below

Error Register Status Register

7654321 0 76543 21 0

CRC UNC 0 IDN 0 ABT T0N AMN BSY RDY DF DSC DRQ COR IDX ERR

00000V0 0 0V0V- 0- V