MD1050-DCC M-Systems Inc., MD1050-DCC Datasheet - Page 29

• Manufacturer Part Number: MD1050-DCC
• Description: Diskonchip Ide Pro Data Sheet
• Manufacturer: M-Systems Inc.

5.1.10 Read Long Sector – 22H, 23h
Read Long Sector (with and without retry) is similar to the Read Sectors command, except that it
returns 516 bytes of data instead of 512 bytes. During a Read Long Sector command, DiskOnChip
IDE Pro does not check the ECC bytes to determine if there has been a data error. Only single
sector read long operations are supported. The transfer consists of 512 bytes of data transferred in
word mode, followed by 4 bytes of random data transferred in byte mode. Random data is returned
instead of ECC bytes because of the nature of the ECC system used.
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Sector Number
Sector Number
Cylinder High
Cylinder High
Sector Count
Sector Count
Cylinder Low
Device/Head
Cylinder Low
Device/Head
Command
Register
Register
Features
Status
Error
BSY
R
7
1
7
0
The number of sectors/logical blocks to transfer. This should be set to 01 for
DRDY
UNC
LBA
DiskOnChip IDE Pro Data Sheet, Rev. 1.5
Cylinder[15:8] or LBA[23:16] of the sector/LBA to transfer
6
6
0
Cylinder[7:0] or LBA[15:8] of the sector/LBA to transfer
Sector[7:0] or LBA[7:0] of the sector/LBA to transfer
22h (with retry) and 23h (without retry)
MC
DF
5
1
5
0
0
OUTPUT
INPUT
IDNF
DSC
D
4
compatibility
4
1
H[3:0] or LBA[27:24] of the sector/LBA to
MCR
DRQ
3
3
0
CORR
ABRT
2
2
transfer
TKONF
IDX
1
1
0
0
91-SR-012-01-8L
AMNF
ERR
0
0
0