360014937
Copyright © 2000 Toshiba corporation. All rights reserved.
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Table 10.7-2 Command Code
Command Code
Command Name
Hex Value
PARAMETERS USED
SC SN CY
DRV HD
FT
Nop
00H
X
X
X
O
X
X
Recalibrate
1xH
X
X
X
O
X
X
Read
Sector(s)
20/21H O O O O O X
Read
Long
22/23H O O O O O X
Write
Sector(s)
30/31H O O O O O X
Write
Long
32/33H O O O O O X
Write
Verify
3CH O O O O O X
Read Verify Sector(s)
40/41H
O
O
O
O
O
X
Format
Track
50H X X O O O X
Seek
7xH X X O O O X
Execute
Diagnostics
90H
X X X O X X
Initialize Device Parameters
91H
O
X
X
O
O
X
SMART B0H
X
X
O
O
X
O
Read
Multiple
C4H O O O O O X
Write
Multiple
C5H O O O O O X
Set Multiple Mode
C6H
O
X
X
O
X
X
Read
DMA
C8/C9H O O O O O X
Write
DMA
CA/CBH O O O O O X
Power Control
Stand-by Immediate
E0 / 94H
O
X
X
O
X
X
Idle Immediate
E1 / 95H
O
X
X
O
X
X
Stand-by
E2 / 96H
O
X
X
O
X
X
Idle
E3 / 97H
O
X
X
O
X
X
Check Power Mode
E5 / 98H
O
X
X
O
X
X
Sleep
E6 / 99H
O
X
X
O
X
X
Read Buffer
E4H
X
X
X
O
X
X
Flush
Cache
E7H
X X X O X X
Write Buffer
E8H
X
X
X
O
X
X
Identify
Device
ECH
X X X O X X
Set Features
EFH
X
X
X
O
X
O
Security
Set
Password
F1H
X X X O X X
Unlock
F2H
X X X O X X
Erase
Prepare
F3H
X X X O X X
Erase
Unit
F4H
X X X O X X
Freeze
F5H
X X X O X X
Disable
Password
F6H
X X X O X X
Read Native Max Address
F8H
X
X
X
O
X
X
Set Max Address
F9H
O
O
O
O
O
X
Note: O and X are defined as follows.
O = Must contain valid information for this command.
X = Don't care for this command.
L = “0” indicates normal read/ write. “1” indicates Long command ( ECC Byte transfer ).
Parameters are defined as follows.
SC = SECTOR COUNT register.
SN = SECTOR NUMBER register.
CY = CYLINDER LOW and CYLINDER HIGH register.
DRV = DRIVE SELECT bit (bit 4 in DRIVE/HEAD register)
HD = HEAD SELECT bits (bit 3-0 in DRIVE/HEAD register)
FT = FEATURES register (WRITE PRECOMPENSATION register)
