Hitachi IC25N080ATMR04-0 Specifications - Page 193

Write Long 32h/33h

Page 193 highlights

13.44 Write Long (32h/33h) Table 127: Write Long (32h/33h) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature Sector Count 0 0 0 0 0 0 0 1 LBA Low V V V V V V V V LBA Mid V V V V V V V V LBA High V V V V V V V V Device 1 L 1 D H H H H Command 0 0 1 1 0 0 1 R 76 CRC UNC 00 Error Register 54 3 2 1 0 0 IDN 0 ABT T0N AMN 0V 0 V 0 0 Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Error see below Sector Count V LBA Low V V V V V V V V LBA Mid V V V V V V V V LBA High V V V V V V V V Device - - - - H H H H Status see below Status Register 7 654 3 2 1 0 BSY RDY DF DSC DRQ COR IDX ERR 0 VVV - 0 - V 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 data is transferred 16 bits at a time and the ECC bytes are transferred 8 bits at a time. The number of ECC bytes are either 4 or 40 according to setting of the Set Feature option. The default number after power on is 4 bytes. Output parameters to the device Sector Count This indicates the number of continuous sectors to be transferred. The Sector Count must be set to one. LBA Low This indicates the sector number of the sector to be transferred. (L = 0) In LBA mode this register contains the LBA bits 0-7. (L = 1) LBA High/Mid This indicates the cylinder number of the sector to be transferred. (L = 0) In LBA mode this register contains the LBA bits 8-15 (Mid) and bits 16-23 (High) (L = 1) H This indicates the head number of the sector to be transferred. (L = 0) In LBA mode this register contains the LBA bits 24-27. (L = 1) R The retry bit, but this bit is ignored. Input parameters from the device Sector Count This indicates the number of requested sectors not transferred. LBA Low This indicates the sector number of the sector to be transferred. (L = 0) In LBA mode this register contains the current LBA bits 0-7. (L = 1) Travelstar 80GN Hard Disk Drive Specification 183

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Travelstar 80GN Hard Disk Drive Specification
183
13.44
Write Long (32h/33h)
Table 127: Write Long (32h/33h)
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 data is transferred 16 bits at a time and the ECC bytes are trans-
ferred 8 bits at a time. The number of ECC bytes are either 4 or 40 according to setting of the Set Feature option.
The default number after power on is 4 bytes.
Output parameters to the device
Sector Count
This indicates the number of continuous sectors to be transferred. The Sector Count must
be set to one.
LBA Low
This indicates the sector number of the sector to be transferred. (L = 0)
In LBA mode this register contains the LBA bits 0–7. (L = 1)
LBA High/Mid
This indicates the cylinder number of the sector to be transferred. (L = 0)
In LBA mode this register contains the LBA bits 8–15 (Mid) and bits 16–23 (High)
(L = 1)
H
This indicates the head number of the sector to be transferred. (L = 0)
In LBA mode this register contains the LBA bits 24–27. (L = 1)
R
The retry bit, but this bit is ignored.
Input parameters from the device
Sector Count
This indicates the number of requested sectors not transferred.
LBA Low
This indicates the sector number of the sector to be transferred. (L = 0)
In LBA mode this register contains the current LBA bits 0–7. (L = 1)
Command Block Output Registers
Command Block Input Registers
Register
7 6 5 4 3 2 1 0
Register
7 6 5 4 3 2 1 0
Data
- - - - - - - -
Data
- - - - - - - -
Feature
- - - - - - - -
Error
see below
Sector Count
0 0 0 0 0 0 0 1
Sector Count
- - - - - - - V
LBA Low
V V V V V V V V
LBA Low
V V V V V V V V
LBA Mid
V V V V V V V V
LBA Mid
V V V V V V V V
LBA High
V V V V V V V V
LBA High
V V V V V V V V
Device
1 L 1 D H H H H
Device
- - - - H H H H
Command
0 0 1 1 0 0 1 R
Status
see below
Error Register
Status Register
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
CRC UNC 0 IDN 0 ABT T0N AMN
BSY RDY DF DSC DRQ COR IDX ERR
0
0
0
V
0
V
0
0
0
V
V
V
-
0
-
V