IBM DJSA-210 Hard Drive Specifications - Page 190

Standby E2h/96h

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13.33 Standby (E2h/96h) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature Sector Count V V V V V V V V Sector Number Cylinder Low Cylinder High Device/Head 1 - 1 D - - - - Command 1 1 1 0 0 0 1 0 Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Error see below Sector Count Sector Number Cylinder Low Cylinder High Device/Head Status see below Error Register 76543210 CRC UNC 0 IDN 0 ABT T0N AMN 00000V00 Status Register 7 6 5 4 3 2 10 BSY RDY DF DSC DRQ COR IDX ERR 0 V 0 V - 0 -V Figure 122. Standby command (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. Travelstar 32GH/30GT/20GN hard disk drive specifications 176

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13.33 Standby (E2h/96h)
see below
Status
1 1 1 0 0 0 1 0
Command
– – – – – – – –
Device/Head
1 – 1 D – – – –
Device/Head
– – – – – – – –
Cylinder High
– – – – – – – –
Cylinder High
– – – – – – – –
Cylinder Low
– – – – – – – –
Cylinder Low
– – – – – – – –
Sector Number
– – – – – – – –
Sector Number
– – – – – – – –
Sector Count
V V V V V V V V
Sector Count
see below
Error
– – – – – – – –
Feature
– – – – – – – –
Data
– – – – – – – –
Data
7 6 5 4 3 2 1 0
Register
7 6 5 4 3 2 1 0
Register
Command Block Input Registers
Command Block Output Registers
V
–
0
–
V
0
V
0
0
0
V
0
0
0
0
0
ERR
IDX
COR
DRQ
DSC
DF
RDY
BSY
AMN
T0N
ABT
0
IDN
0
UNC
CRC
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Status Register
Error Register
Figure 122. Standby command (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.
Travelstar 32GH/30GT/20GN hard disk drive specifications
176