IBM DTTA-351010 Hard Drive Specifications - Page 103

Command Descriptions

Page 103 highlights

12.0 Command Descriptions Proto col Command 3 Check Power Mode 3 Check Power Mode* 3 Execute Device Diagnostic 3 Flush Cache 2 Format Track 1 Identify Device 3 Idle 3 Idle* 3 Idle Immediate 3 Idle Immediate* 3 Initialize Device Parameters 3 NOP 1 Read Buffer 4 Read DMA (retry) 4 Read DMA (no retry) 5 Read DMA Queued 1 Read Long (retry) 1 Read Long (no retry) 1 Read Multiple 3 Read Native Max LBA/CYL 1 Read Sectors (retry) 1 Read Sectors (no retry) 3 Read Verify Sectors (retry) 3 Read Verify Sectors (no retry) 3 Recalibrate 2 Security Disable Password 3 Security Erase Prepare 2 Security Erase Unit 3 Security Freeze Lock 2 Security Set Password 2 Security Unlock 3 Seek 5 Service 3 Set Features 3 Set Max LBA/CYL 3 Set Multiple Mode Figure 71. Command Set Code (Hex) E5 98 90 E7 50 EC E3 97 E1 95 91 00 E4 C8 C9 C7 22 23 C4 F8 20 21 40 41 1x F6 F3 F4 F5 F1 F2 7x A2 EF F9 C6 Binary Code Bit 76543210 11100101 10011000 10010000 11100111 01010000 11101100 11100011 10010111 11100001 10010101 10010001 00000000 11100100 11001000 11001001 11000111 00100010 00100011 11000100 11111000 00100000 00100001 01000000 01000001 0001 11111010 11110011 11110100 11110101 11110001 11110010 0111 10100010 11101111 11111001 11000110 © Copyright IBM Corp. 1998 95

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12.0 Command Descriptions
Proto
Command
Code
Binary Code
col
(Hex)
Bit
76543210
3
Check Power Mode
E5
11100101
3
Check Power Mode*
98
10011000
3
Execute Device Diagnostic
90
10010000
3
Flush Cache
E7
11100111
2
Format Track
50
01010000
1
Identify Device
EC
11101100
3
Idle
E3
11100011
3
Idle*
97
10010111
3
Idle Immediate
E1
11100001
3
Idle Immediate*
95
10010101
3
Initialize Device Parameters
91
10010001
3
NOP
00
00000000
1
Read Buffer
E4
11100100
4
Read DMA (retry)
C8
11001000
4
Read DMA (no retry)
C9
11001001
5
Read DMA Queued
C7
11000111
1
Read Long (retry)
22
00100010
1
Read Long (no retry)
23
00100011
1
Read Multiple
C4
11000100
3
Read Native Max LBA/CYL
F8
11111000
1
Read Sectors (retry)
20
00100000
1
Read Sectors (no retry)
21
00100001
3
Read Verify Sectors (retry)
40
01000000
3
Read Verify Sectors (no retry)
41
01000001
3
Recalibrate
1x
0001
2
Security Disable Password
F6
11111010
3
Security Erase Prepare
F3
11110011
2
Security Erase Unit
F4
11110100
3
Security Freeze Lock
F5
11110101
2
Security Set Password
F1
11110001
2
Security Unlock
F2
11110010
3
Seek
7x
0111
5
Service
A2
10100010
3
Set Features
EF
11101111
3
Set Max LBA/CYL
F9
11111001
3
Set Multiple Mode
C6
11000110
Figure 71. Command Set
Copyright IBM Corp. 1998
95