Write Dma Ext (35H); Table 116: Write Dma (35H) - Hitachi HTS541010G9AT00 - Travelstar 100 GB Hard Drive Specifications

12.43 Write DMA EXT (35h)

Table 116: Write DMA (35h)

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
7 6 5
CRC UNC 0
V 0 0
The Write DMA Ext command transfers one or more sectors of data from the host to the device, then the data is
written to the disk media.
The sectors of data are transferred through the Data Register 16 bits at a time.
The host initializes a slave-DMA channel prior to issuing the command. Data transfers are qualified by DMARQ
and are performed by the slave-DMA channel. The device issues only one interrupt per command to indicate that
data transfer has terminated and status is available.
If an uncorrectable error occurs, the write will be terminated at the failing sector.
Output parameters to the device
Sector Count Current The number of continuous sectors to be transferred low order, bits (7-0).
Sector Count Previous The number of continuous sectors to be transferred high order bits (15:8). If zero is speci-
LBA Low Current
LBA Low Previous
LBA Mid Current
LBA Mid 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 - - - - - -
0 0 1 1 0 1 0 1
Error Register
4 3 2 1
IDN 0 ABT T0N AMN
V 0 V 0
fied in the Sector Count register, then 65,536 sectors will be transferred.
LBA (7-0)
LBA (31-24)
LBA (15-8)
LBA (39-32)
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
168
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