The Set Feature command is to establish the following parameters which affect the execution of certain
features as shown in the following table.
ABT will be set to 1 in the Error Register if the Feature register contains any undefined values.
DDH
Disable release interrupt
CCH
Enable reverting to power on defaults
C2H
Disable Automatic Acoustic
Management
BBH
4 bytes of ECC apply on Read
Long/Write Long commands
AAH
Enable read look-ahead feature
89H
Disable Address Offset mode
86H
Disable Power-up in Standby mode
85H
Disable Advanced Power Management
82H
Disable write cache
66H
Disable reverting to power on defaults
5DH
Enable release interrupt
55H
Disable read look-ahead feature
44H
40 bytes of ECC apply on Read
Long/Write Long commands
42H
Enable Automatic Acoustic
Management
09H
Enable Address Offset mode
07H
Power-up in Standby feature set device
spin-up
06H
Enable Power-up in Standby feature set
05H
Enable Advanced Power Management
03H
Set transfer mode based on value in
sector count register
02H
Enable write cache
Destination code for this command
Command feature
Note: After a power on reset of hard reset the device is set to the following features as default:
Write cache
: Enable
ECC bytes
: 4 bytes
Read look-ahead
: Enable
Reverting to power on defaults
: Disable
Release interrupt
: Disable
Figure
110.
Output parameters to the device
Deskstar 60 GXP Hard disk drive specification
149
Содержание IC35L020 - Deskstar 20 GB Hard Drive
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