Read Sector(S) Ext (24H); Table 80: Read Sector(S) Ext Command (24H) - Hitachi HTS541010G9AT00 - Travelstar 100 GB Hard Drive Specifications

12.22 Read Sector(s) EXT (24h)

Table 80: Read Sector(s) EXT Command (24h)

Command Block Output Registers
Register
Data Low
Data High
Current
Feature
Previous
Current
Sector
Count
Previous
Current
LBA Low
Previous
Current
LBA Mid
Previous
Current
LBA High
Previous
Device
Command
Error Register
7 6 5
CRC UNC 0
0 V 0
The Read Sector(s) Ext command reads from 1 to 65,536 sectors of data from disk media, then transfers the data
from the device to the host.
The sectors are transferred through the Data Register 16 bits at a time.
If an uncorrectable error occurs, the read will be terminated at the failing sector.
Output parameters to the device
Sector Count Current This indicates the number of sectors to be transferred low order, bits (7-0)
Sector Count Previous This indicates the number of sectors to be transferred high order, bits (15-8). If 0000h in
LBA Low Current
LBA Low Previous
LBA Mid Current
LBA Mid Previous
LBA High Current
LBA High Previous
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
V V V V V V V V
V V V V V V V V
V V V V V V V V
V V V V V V V V
V V V V V V V V
V V V V V V V V
V V V V V V V V
V V V V V V V V
1 1 1 - - - - -
0 0 1 0 0 1 0 0
4 3 2 1
IDN 0 ABT T0N AMN
V 0 V 0
the Sector Count register is specified, 65.536 sectors will be transferred.
LBA (7-0)
LBA (31-24)
LBA (15-8)
LBA (39-32)
LBA (23-16)
LBA (47-40)
Travelstar 5K100 (Serial ATA) Hard Disk Drive Specification
Command Block Input Registers
Register
Data Low
Data High
Error
Sector
Count
LBA Low
LBA Mid
LBA High
Device
Status
0 7 6
BSY RDY DF DSC DRQ
0 0 V
121
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
see below
HOB=0 - - - - - - - -
HOB=1 - - - - - - - -
HOB=0 V V V V V V V V
HOB=1 V V V V V V V V
HOB=0 V V V V V V V V
HOB=1 V V V V V V V V
HOB=0 V V V V V V V V
HOB=1 V V V V V V V V
V - - - - - - -
See below ...
Status Register
5 4 3 2
COR IDX
0 V - 0
1 0
ERR
- V