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Hitachi HTS725050A9A364 Datasheet Page 162

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7K500 OEM Specification
Page 162 of 176
14.44
14.4414.44
14.44 Write DMA (C
Write DMA (CWrite DMA (C
Write DMA (CA
AA
Ah/CBh)
h/CBh) h/CBh)
h/CBh)
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 -
-
-
-
-
-
-
-
Error ...See Below...
Sector Count V
V
V
V
V
V
V
V
Sector Count V
V
V
V
V
V
V
V
LBA Low V
V
V
V
V
V
V
V
LBA Low V
V
V
V
V
V
V
V
LBA Mid V
V
V
V
V
V
V
V
LBA Mid V
V
V
V
V
V
V
V
LBA High V
V
V
V
V
V
V
V
LBA High V
V
V
V
V
V
V
V
Device -
L
-
-
H
H
H
H
Device -
-
-
-
H
H
H
H
Command 1
1
0
0
1
0
1
R
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
AM
N
BSY
RDY
DF
DSC
DRQ
COR
IDX
ERR
V 0 0 V 0 V 0 0
0 V V V - 0 0 V
Table 128 Write DMA Command (CAh/CBh)
Output Parameters To The Device
Sector Count
The number of continuous sectors to be transferred. If zero
is specified, then 256 sectors
will be transferred.
LBA Low
The sector number of the first sector to be transferred. (L=0)
In LBA mode, this register contains LBA bits 0 - 7. (L=1)
LBA High/Mid
The cylinder number of the first sector to be transferred. (L=0)
The head number of the first sector to be transferred. (L=0)
In LBA mode, this register contains LBA bits 24 - 27. (L=1)
R
The retry bit, but this bit is ignored.
Input Parameters From The Device
Sector Count
LBA Low
The sector number of the last transferred sector. (L=0)
LBA High/Mid
The cylinder number of the last transferred sector. (L=0)
In LBA mode, this register contains current LBA bits 8 - 15 (Mid), 16 - 23 (High).
(L=1)
H
The head number of the last transferred sector. (L=0) In LBA mode, this register
contains current LBA bits 24 - 27. (L=1)
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