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Hitachi HTS543212L9SA00 Manual Do Utilizador

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                       5K320 SATA OEM Specification 
108 
 
14.15  Read DMA Ext (25h)   
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 Low  
- 
- 
- 
- 
- 
- 
- 
-     Data Low 
- 
- 
- 
- 
- 
- 
- 
- 
Data High 
- 
- 
- 
- 
- 
- 
- 
-     Data High 
- 
- 
- 
- 
- 
- 
- 
- 
Current 
- 
- 
- 
- 
- 
- 
- 
-     Error 
...See Below... 
Feature 
Previous 
- 
- 
- 
- 
- 
- 
- 
-       
  
Current 
V  V  V  V  V  V  V  V    
HOB=0  - 
- 
- 
- 
- 
- 
- 
- 
Sector Count 
Previous 
V  V  V  V  V  V  V  V    
Sector Count 
HOB=1  - 
- 
- 
- 
- 
- 
- 
- 
Current 
V  V  V  V  V  V  V  V    
HOB=0  V  V  V  V  V  V  V  V 
LBA Low 
Previous 
V  V  V  V  V  V  V  V    
LBA Low 
HOB=1  V  V  V  V  V  V  V  V 
Current 
V  V  V  V  V  V  V  V    
HOB=0  V  V  V  V  V  V  V  V 
LBA Mid 
Previous 
V  V  V  V  V  V  V  V    
LBA Mid 
HOB=1  V  V  V  V  V  V  V  V 
Current 
V  V  V  V  V  V  V  V    
HOB=0  V  V  V  V  V  V  V  V 
LBA High 
Previous 
V  V  V  V  V  V  V  V    
LBA High 
HOB=1  V  V  V  V  V  V  V  V 
Device 
- 
1 
- 
- 
- 
- 
- 
-     Device 
- 
- 
- 
- 
- 
- 
- 
- 
Command 
0 
0 
1  0  0  1 
0  1     Status 
...See Below... 
 
Error Register 
  
Status Register 
7 
6 
5 
4 
3 
2 
1 
0 
  
7 
6 
5 
4 
3 
2 
1 
0 
CRC  UNC 
0 
IDN 
0 
ABT   T0N  AMN     BSY  RDY  D F  DSC   DRQ  COR  IDX 
ERR 
V 
V 
0 
V 
0 
V 
0 
0 
  
0 
V 
0 
V 
- 
0 
0 
V 
Table  70 Read DMA Ext Command (25h)   
The Read DMA Ext command reads one or more sectors of data from disk media, then transfers the 
data from the device to the host.  
The sectors are transferred through the Data Register 16 bits at a time.  
The host initializes a slave-DMA channel prior to issuing the command. The data transfers are 
qualified by DMARQ and are performed by the slave -DMA channel. The device issues only one 
interrupt per command to indicate that data transfer has terminated and status is available.   
If an uncorrectable error occurs, the read will be terminated at the failing sector.   
Output Parameters To The Device  
Sector Count Current 
The number of sectors to be transferred low order, bits (7:0). 
Sector Count Previous 
The number of sectors to be transferred high order, bits (15:8). If 0000h in the  Sector 
Count register is specified, then 65,536 sectors will be transferred. 
LBA Low Current 
LBA (7:0) 
LBA Low Previous 
LBA (31:24) 
LBA Mid Current 
LBA (15:8) 
LBA Mid Previous 
LBA (39:32) 
LBA High Current 
LBA (23:16) 
LBA High Previous 
LBA (47:40) 
Input Parameters From The Device 
LBA Low (HOB=0) 
LBA (7:0) of the address of the first unrecoverable error. 
LBA Low (HOB=1) 
LBA (31:24)of the address of the first unrecoverable error. 
LBA Mid (HOB=0) 
LBA (15:8)of the address of the first unrecoverable error. 
LBA Mid (HOB=1) 
LBA (39:32)of the address of the first unrecoverable error. 
LBA High (HOB=0) 
LBA (23:16)of the address of the first unrecoverable error. 
LBA High (HOB=1) 
LBA (47:40)of the address of the first unrecoverable error.