IBM IC35L020 Hard Drive Specifications - Page 160

Seek 7xh

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15.26 Seek (7xh) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature Sector Count 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 1 1 1 - - - - Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Error see below Sector Count 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 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 0 V - 0 -V Figure 107. Seek Command (7xh) The Seek command initiates a seek to the designated track and selects the designated head. The device need not be formatted for a seek to execute properly. Output parameters to the device Sector Number In LBA mode this register specifies LBA address bits 0-7 for seek. (L=1) Cylinder High/Low The cylinder number of the seek. In LBA mode this register specifies LBA address bits 8-15 (Low), 16-23 (High) for seek. (L=1) H The head number of the seek. In LBA mode this register specifies LBA address bits 24-27 for seek. (L=1) Input parameters from the device Sector Number In LBA mode this register contains current LBA bits 0-7. (L=1) Cylinder High/Low In LBA mode this register contains current LBA bits 8-15 (Low), 16-23 (High). (L=1) H In LBA mode this register contains current LBA bits 24-27. (L=1) Deskstar 60 GXP Hard disk drive specification 146

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15.26 Seek (7xh)
see below
Status
0 1 1 1 - - - -
Command
- - - - - - - -
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
- - - - - - - -
Sector Count
- - - - - - - -
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
0
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 107. Seek Command (7xh)
The Seek command initiates a seek to the designated track and selects the designated head. The device
need not be formatted for a seek to execute properly.
Output parameters to the device
Sector Number
In LBA mode this register specifies LBA address bits 0–7 for seek. (L=1)
Cylinder High/Low
The cylinder number of the seek.
In LBA mode this register specifies LBA address bits 8–15 (Low), 16–23 (High)
for seek. (L=1)
H
The head number of the seek.
In LBA mode this register specifies LBA address bits 24–27 for seek. (L=1)
Input parameters from the device
Sector Number
In LBA mode this register contains current LBA bits 0–7. (L=1)
Cylinder High/Low
In LBA mode this register contains current LBA bits 8–15 (Low), 16–23 (High).
(L=1)
H
In LBA mode this register contains current LBA bits 24–27. (L=1)
Deskstar
60 GXP Hard disk drive specification
146