IBM IC35L020 Hard Drive Specifications - Page 197

Write Long 32h/33h

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15.38 Write Long (32h/33h) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature Sector Count 0 0 0 0 0 0 0 1 Sector Number V V V V V V V V Cylinder Low V V V V V V V V Cylinder High V V V V V V V V Device/Head 1 L 1 D H H H H Command 0 0 1 1 0 0 1 R Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Error see below Sector Count V Sector Number V V V V V V V V Cylinder Low V V V V V V V V Cylinder High V V V V V V V V Device/Head - - - - H H H H Status see below Error Register 76543210 CRC UNC 0 IDN 0 ABT T0N AMN 000V0V00 Status Register 7 6 5 4 3 2 10 BSY RDY DF DSC DRQ COR IDX ERR 0 V V V - 0 -V 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

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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