Write Dma Ext (35H); Table 130 Write Dma Ext Command (35H) - Hitachi 7K320 - Travelstar Mobile Hard Drive Specifications

14.45

Write DMA Ext (35h)

Command Block Output Registers
Register
Data Low
Data High
Feature Current
Previous
Sector Count Current
Previous
LBA Low Current
Previous
LBA Mid Current
Previous
LBA High Current
Previous
Device
Command
Error Register
7 6 5 4
CRC UNC 0 IDN
V 0 0 V

Table 130 Write DMA Ext Command (35h)

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
Sector Count Previous
LBA Low Current
LBA Low Previous
LBA Mid Current
LBA Mid Previous
LBA High Current
LBA High Previous
Input Parameters From The Device
LBA Low (HOB=0)
LBA Low (HOB=1)
LBA Mid (HOB=0)
LBA Mid (HOB=1)
LBA High (HOB=0)
LBA High (HOB=1)
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
3 2 1 0
0 ABT T0N AMN
0 V 0 0
The number of continuous sectors to be transferred low order, bits (7:0).
The number of continuous sectors to be transferred high order bits (15:8). If 0000h in
the Sector Count register is specified, then 65,536 sectors will be transferred.
LBA (7:0).
LBA (31:24).
LBA (15:8).
LBA (39:32).
LBA (23:16).
LBA (47:40).
LBA (7:0) of the address of the first unrecoverable error.
LBA (31:24) of the address of the first unrecoverable error.
LBA (15:8) of the address of the first unrecoverable error.
LBA (39:32) of the address of the first unrecoverable error.
LBA (23:16) of the address of the first unrecoverable error.
LBA (47:40) of the address of the first unrecoverable error.
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7K320 (SATA) OEM Specification
Command Block Input Registers
Register
- Data Low
- Data High
- Error
-
Sector Count HOB=0 -
HOB=1 -
LBA Low HOB=0 V V V V V V V V
HOB=1 V V V V V V V V
LBA Mid HOB=0 V V V V V V V V
HOB=1 V V V V V V V V
LBA High HOB=0 V V V V V V V V
HOB=1 V V V V V V V V
- Device
Status
Status Register
7 6 5
BSY RDY DF DSC DRQ COR IDX
0 V 0
7 6 5 4 3 2 1 0
- - - - -
- - - - -
...See Below...
- - - -
- - - -
- - - - -
...See Below...
4 3 2 1
V - 0 0
- - -
- - -
- - -
- - -
- - -
0
ERR
V