K6602743
Rev.2
02.12.’02
- 35 -
6.3.2 Commands
6.3.2.1 Command Summary
Commands are issued to the device first loading the Command Block Registers with any information
needed for the command. Then a command code is written to the Command Register, which starts
the execution of the command.
Table 6.4 Command Codes
Command Description
Protoc
ol
Clas
s
Code Parameter
Setup
FR
SC
SN
CY
DH
Read Commands
Read
Buffer
PI 1 E4h D
Read Sectors
PI
1
20h, 21h
V
V
V
V
Read Long
PI
1
22h, 23h
V
V
V
V
Read Multiple
PI
1
C4h
V V V V
Read DMA
DM
1
C8h, C9h
V
V
V
V
Read Verify
ND
1
40h, 41h
V
V
V
V
Write Commands
Write
Buffer
PO 2 E8h D
Write Sectors
PO
2
30h, 31h
V
V
V
V
Write Long
PO
2
32h, 33h
V
V
V
V
Write
Multiple
PO 3 C5h V V V V
Write
DMA
DM 3 CAh,CBh V V V V
Format
Track
PO 2 50h V V V
Flush
Cache
ND 1 E7h D
Seek Commands
Recalibrate
ND 1 1Xh D
Seek
ND 1 7Xh V V V
Mode Set/Check, Diagnostic
Execute Device Diagnostic
ND
1
90h
D
Initialize Device Parameters
ND
1
91h
V
V
Identify
Device
PI 1 ECh D
Set Features
ND
1
EFh
V
D
Set Multiple Mode
ND
1
C6h
V
D
Power Control
Check Power Mode
ND
1
98h, E5h
V
D
Idle
ND
1
97h, E3h
V
D
Idle Immediate
ND
1
95h, E1h
D
Sleep
ND 1
99h,
E6h
D
Standby
ND 1
96h,
E2h V D
Standby Immediate
ND
1
94h, E0h
D
