Hitachi HTS543212L9SA00 Manual Do Utilizador

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                       5K320 SATA OEM Specification 
137 
 
14.35  Set Features (EFh)   
Command Block Output Registers 
   Command Block Input Registers 
Register 
7  6  5  4  3  2  1  0     Register 
7  6  5  4  3  2  1  0 
Data 
-  -  -  - 
-  -  -     Data 
-  -  -  -  -  -  - 
Feature 
V  V  V  V  V  V  V  V     Error 
...See Below... 
Sector Count 
Note.1 
   Sector Count 
-  -  -  -  -  -  - 
LBA Low  
-  -  -  - 
-  -  -     LBA Low  
-  -  -  -  -  -  - 
LBA Mid 
-  -  -  - 
-  -  -     LBA Mid 
-  -  -  -  -  -  - 
LBA High 
-  -  -  - 
-  -  -     LBA High 
-  -  -  -  -  -  - 
Device 
-  -  -  - 
-  -  -     Device 
-  -  -  -  -  -  - 
Command 
1  1  1  0  1  1  1  1     Status 
...See Below... 
 
Error Register 
  
Status Register 
  
CRC  UNC 
IDN 
ABT   T0N 
AM
   BSY  RDY 
DF 
DSC  DRQ   COR  IDX  ERR 
  
Table  105 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 
: Enable 
ECC bytes  
: 4 bytes 
Read look-ahead 
: Enable 
Reverting to power on defaults 
: Disable 
Device-initiated interface power state 
transition 
: Disable 
Software setting preservation 
: Enable 
 
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  
06H 
Enable Power-Up in Standby feature set  
07H 
Power -Up in Standby feature set device spin-up 
10H 
Enable use of Serial ATA feature 
42H 
Enable Automatic Acoustic Management feature set  
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 
C 2H 
Disable Automatic Acoustic Management feature set  
CCH 
Enable reverting to power on defaults 
 
 
Note 1.