Set Features (Efh) - Hitachi HTS541616J9SA00 Specifications

14.35

Set Features (EFh)

Command Block Output Registers
Register
Data
Feature
Sector Count
LBA Low
LBA Mid
LBA High
Device
Command
Error Register
7 6 5 4
CRC UNC 0 IDN
0 0 0 0
Figure 75 Set Features Command (EFh)
The Set Feature command is to establish the following parameters which affect the execution of
certain features as shown in below table.
ABT will be set to 1 in the Error Register if the Feature register contains any undefined values.
After power on reset, the device is set to the following features as default.
Write cache
ECC bytes
Read look-ahead
Reverting to power on defaults
Device-initiated interface power state
transition
Software setting preservation
Output Parameters To The Device
Feature Destination code for this command
02H Enable write cache (Note.2)
03H Set transfer mode based on value in sector count register
05H Enable Advanced Power Management
Enable Power-Up in Standby feature set
06H
Power-Up in Standby feature set device spin-up
07H
Enable use of Serial ATA feature
10H
Enable Automatic Acoustic Management feature set
42H
44H 52 bytes of ECC apply on Read Long/Write Long commands
55H Disable read look-ahead feature
66H Disable reverting to power on defaults
82H Disable write cache
85H Disable Advanced Power Management (Note.3)
86H Disable Power-UP in Standby feature set
90H Disable use of Serial ATA feature
AAH Enable read look-ahead feature
BBH 4 bytes of ECC apply on Read Long/Write Long commands
C2H Disable Automatic Acoustic Management feature set
CCH Enable reverting to power on defaults
Note 1.
Travelstar 5K160 (SATA) Hard Disk Drive Specification
7 6 5 4 3 2 1 0
- - - - - - - -
V V V V V V V V
Note.1
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
1 1 1 0 1 1 1 1
3 2 1 0
0 ABT T0N AM
N
0 V 0 0
: Enable
: 4 bytes
: Enable
: Disable
: Disable
: Enable
125/167
Command Block Input Registers
Register
Data
Error
Sector Count
LBA Low
LBA Mid
LBA High
Device
Status
Status Register
7 6 5 4
BSY RDY DF DSC DRQ COR IDX ERR
0 V 0 -
7 6 5 4 3 2 1 0
- - - - - - - -
...See Below...
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
...See Below...
3 2 1 0
- 0 0 V