IBM DTCA-24090 Hard Drive Specifications - Page 172

Write Multiple

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12.36 Write Multiple (C5h) Command Block Output Registers Register 76543210 Data Feature Sector Count V V V V V V V V Sector Number V V V V V V V V Cylinder Low V V V V V V V V Cylinder High V V V V V V V V Device/Head 1L1DHHHH Command 11000101 Command Block Input Registers Register 76543210 Data Error ...See Below... Sector Count V V V V V V V V Sector Number V V V V V V V V Cylinder Low V V V V V V V V Cylinder High V V V V V V V V Device/Head HHHH Status ...See Below... Error Register 76543210 CRC UNC 0 IDN 0 ABT T0N AMN 000V0V00 Status Register 76543210 BSY RDY DF DSC DRQ COR IDX ERR 0VVV 0 V Figure 106. Write Multiple Command (C5h) The Write Multiple command transfers one or more sectors from the host to the device, then the data is written to the disk media. Command execution is identical to the Write Sectors command except that an interrupt is generated for each block (as defined by the Set Multiple command) instead of for each sector. The sectors are transferred through the Data Register 16 bits at a time. Output Parameters To The Device Sector Count The number of continuous sectors to be transferred. If zero is specified, then 256 sectors will be transferred. Sector Number The sector number of the first sector to be transferred. ( L = 0 ) In LBA mode, this register contains LBA bits 0 - 7. ( L = 1 ) Cylinder High/Low The cylinder number of the first sector to be transferred. ( L = 0 ) In LBA mode, this register contains LBA bits 8 - 15 (Low), 16 - 23 (High). ( L = 1 ) H The head number of the first sector to be transferred. ( L = 0 ) In LBA mode, this register contains LBA bits 24 - 27. ( L = 1 ) 164 OEM Specifications of DTCA-2xxxx 2.5 inch H D D

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12.36
Write Multiple
(C5h)
Command Block Output Registers
Command Block Input Registers
Register
76543210
Register
76543210
Data
Data
Feature
Error
...See Below...
Sector Count
VVVVVVVV
Sector Count
VVVVVVVV
Sector Number
VVVVVVVV
Sector Number
VVVVVVVV
Cylinder Low
VVVVVVVV
Cylinder Low
VVVVVVVV
Cylinder High
VVVVVVVV
Cylinder High
VVVVVVVV
Device/Head
1L1DHHHH
Device/Head
HHHH
Command
11000101
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
Figure 106. Write Multiple Command (C5h)
The Write Multiple command transfers one or more sectors from the host to the device, then the data is
written to the disk media.
Command execution is identical to the Write Sectors command except that an interrupt is generated for each
block (as defined by the Set Multiple command) instead of for each sector.
The sectors are transferred
through the Data Register 16 bits at a time.
Output Parameters To The Device
Sector Count
The number of continuous sectors to be transferred.
If zero is specified, then 256
sectors will be transferred.
Sector Number
The sector number of the first sector to be transferred. (L=0)
In LBA mode, this register contains LBA bits
0 - 7. (L=1)
Cylinder High/Low
The cylinder number of the first sector to be transferred. (L=0)
In LBA mode, this register contains LBA bits
8 - 15 (Low), 16 - 23 (High). (L=1)
H
The head number of the first sector to be transferred. (L=0)
In LBA mode, this register contains LBA bits
24 - 27. (L=1)
164
OEM Specifications of DTCA-2xxxx 2.5 inch HDD