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15.38
Write Long (32h/33h)
see below
Status
0 0 1 1 0 0 1 R
Command
- - - - H H H H
Device/Head
1 L 1 D H H H H
Device/Head
V V V V V V V V
Cylinder High
V V V V V V V V
Cylinder High
V V V V V V V V
Cylinder Low
V V V V V V V V
Cylinder Low
V V V V V V V V
Sector Number
V V V V V V V V
Sector Number
- - - - - - - V
Sector Count
0 0 0 0 0 0 0 1
Sector Count
see below
Error
- - - - - - - -
Feature
- - - - - - - -
Data
- - - - - - - -
Data
7 6 5 4 3 2 1 0
Register
7 6 5 4 3 2 1 0
Register
Command Block Input
Registers
Command Block Output
Registers
V
–
0
–
V
V
V
0
0
0
V
0
V
0
0
0
ERR
IDX
COR
DRQ
DSC
DF
RDY
BSY
AMN
T0N
ABT
0
IDN
0
UNC
CRC
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Status Register
Error Register
Figure 138. Write Long Command (32h/33h)
The Write Long command transfers the data and the ECC bytes of the designated sector from the host to
the device. The data and the ECC bytes are then written to the disk media.
After 512 bytes of data have been transferred, the device will keep setting DRQ=1 to indicate that the
device is ready to receive the ECC bytes from the host. The data is transferred 16 bits at a time and the
ECC bytes are transferred 8 bits at a time. The number of ECC bytes is 4 or 40 depending upon the
setting of the Set Feature option. The default number after power-on is 4 bytes.
Output parameters to the device
Sector Count
This parameter represents the number of continuous sectors to be transferred.
The Sector Count must be set to one.
Sector Number
This parameter represents the sector number of the sector to be transferred.
(L=0)
In LBA mode, this register contains LBA bits 0–7. (L=1)
Cylinder High/Low This parameter represents the cylinder number of the sector to be transferred.
(L=0)
In LBA mode, this register contains LBA bits 8–15 (Low), 16–23 (High). (L=1)
H
This parameter represents the head number of the sector to be transferred.
(L=0)
In LBA mode, this register contains LBA bits 24–27. (L=1)
Deskstar 60 GXP Hard disk drive specification
183
Содержание IC35L020 - Deskstar 20 GB Hard Drive
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