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5-34 C141-E145-02EN
At command issuance (I/O registers setting contents)
1F7
H
(CM)11101100
1F6
H
(DH) x x x DV xx
1F5
H
(CH)
1F4
H
(CL)
1F3
H
(SN)
1F2
H
(SC)
1F1
H
(FR)
xx
xx
xx
xx
xx
At command completion (I/O registers contents to be read)
1F7
H
(ST) Status information
1F6
H
(DH) x x x DV xx
1F5
H
(CH)
1F4
H
(CL)
1F3
H
(SN)
1F2
H
(SC)
1F1
H
(ER)
xx
xx
xx
xx
Error information
Table 5.4 Information to be read by IDENTIFY DEVICE command (1 of 3)
Word Value Description
0 X’045A’ General Configuration *1
1 *2 Number of Logical cylinders *2
2 X’xxxx’ Detailed Configuration *19
3 *2 Number of Logical Heads *2
4-5 X’0000’ Undefined
6 *2 Number of Logical sectors per Logical track *2
7-9 X’0000’ Undefined
10-19 Set by a device Serial number (ASCII code, 20 characters, right)
20 X’0003’ Undefined
21 X’xxxx’ Buffer Size (1 LSB: 512 Byte)
22 X’0004’ Number of ECC bytes transferred at READ LONG or WRITE
LONG command
23-26 – Firmware revision (ASCII code, 8 characters, left)