IBM IC35L020 Hard Drive Specifications - Page 201

Write Sectors 30h/31h

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15.40 Write Sectors (30h/31h) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature Sector Count V V V V V V V 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 1 L 1 D H H H H Command 0 0 1 1 0 0 0 R Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Error see below Sector Count V V V V V V V 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 140. Write Sectors Command (30h/31h) The Write Sectors command transfers one or more sectors from the host to the device; the data is then written to the disk media. The sectors are transferred through the Data Register 16 bits at a time. If an uncorrectable error occurs, the write will be terminated at the failing sector. Output parameters to the device Sector Count This parameter represents the number of continuous sectors to be transferred. If zero is specified, then 256 sectors will be transferred. Sector Number The sector number of the first sector to be transferred. (L=0) In LBA mode this register contains LBA bits 0-7. (L=1) Cylinder High/Low The cylinder number of the first sector to be transferred. (L=0) In LBA mode this register contains LBA bits 8-15 (Low), 16-23 (High). (L=1) H 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 This parameter represents the retry bit. If it is set to one, retries are disabled. If it is ignored, write cache is enabled. (Ignoring the retry bit is in violation of ATA-2.) Deskstar 60 GXP Hard disk drive specification 187

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15.40 Write Sectors (30h/31h)
see below
Status
0 0 1 1 0 0 0 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 V V V V V V V
Sector Count
V V V V V V V V
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 140. Write Sectors Command (30h/31h)
The Write Sectors command transfers one or more sectors from the host to the device; the data is then
written to the disk media.
The sectors are transferred through the Data Register 16 bits at a time.
If an uncorrectable error occurs, the write will be terminated at the failing sector.
Output parameters to the device
Sector Count
This parameter represents the number of continuous sectors to be transferred.
If zero is specified, then 256 sectors will be transferred.
Sector Number
The sector number of the first sector to be transferred. (L=0)
In LBA mode this register contains LBA bits 0–7. (L=1)
Cylinder High/Low
The cylinder number of the first sector to be transferred. (L=0)
In LBA mode this register contains LBA bits 8–15 (Low), 16–23 (High). (L=1)
H
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
This parameter represents the retry bit. If it is set to one, retries are disabled. If it
is ignored, write cache is enabled. (Ignoring the retry bit is in violation of ATA-2.)
Deskstar
60 GXP Hard disk drive specification
187