Write Long (32H/33H) - Hitachi HTS541616J9SA00 Specifications

14.49

Write Long (32h/33h)

Command Block Output Registers
Register
Data
Feature
Sector Count
LBA Low
LBA Mid
LBA High
Device
Command
Error Register
7 6 5 4
CRC UNC 0 IDN
0 0 0 V
Figure 104 Write Long Command (C5h)
The Write Long command transfers the data and the ECC bytes of the designated one sector from
the host to the device, then the data and the ECC bytes are written to the disk media.
After 512 bytes of data have been transferred, the device will keep setting DRQ=1 to indicate
that the device is ready to receive the ECC bytes from the host. The number of ECC bytes are
4 or 52 according to setting of Set Feature option. The default number after power on is 4
bytes.
Output Parameters To The Device
Sector Count
LBA Low
LBA High/Mid
H
R
Input Parameters From The Device
Sector Count
LBA Low
LBA High/Mid
H
The file internally uses 52 bytes of ECC on all data read or writes. The 4 byte mode of operation
is provided via an emulation technique. As a consequence of this emulation it is recommended
that 52 byte ECC mode is used for all tests to confirm the operation of the files ECC hardware.
Unexpected results may occur if such testing is performed using 4 byte mode.
Travelstar 5K160 (SATA) Hard Disk Drive Specification
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
0 0 0 0 0 0 0 1
V V V V V V V V
V V V V V V V V
V V V V V V V V
- L - - H H H H
0 0 1 1 0 0 1 R
3 2 1 0
0 ABT T0N AM
N
0 V 0 0
The number of continuous sectors to be transferred. The Sector Count must be set to
one.
The sector number of the sector to be transferred. (L=0) In LBA mode, this register
contains LBA bits 0 - 7. (L=1)
The cylinder number of the sector to be transferred. (L=0) In LBA mode, this register
contains LBA bits 8 - 15 (Mid), 16 - 23 (High). (L=1)
The head number of the sector to be transferred. (L=0) In LBA mode, this register
contains LBA bits 24 - 27. (L=1)
The retry bit, but this bit is ignored.
The number of requested sectors not transferred.
The sector number of the sector to be transferred. (L=0) In LBA mode, this register
contains current LBA bits 0 - 7. (L=1)
The cylinder number of the sector to be transferred. (L=0) In LBA mode, this register
contains current LBA bits 8 - 15 (Mid), 16 - 23 (High). (L=1)
The head number of the sector to be transferred. (L=0) In LBA mode, this register
contains current LBA bits 24 - 27. (L=1)
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Command Block Input Registers
Register
Data
Error
Sector Count
LBA Low
LBA Mid
LBA High
Device
Status
Status Register
7 6 5 4
BSY RDY DF DSC DRQ COR IDX ERR
0 V V V
7 6 5 4 3 2 1 0
- - - - - - - -
...See Below...
- - - - - - - 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
- - - - H H H H
...See Below...
3 2 1 0
- 0 0 V