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4.3 SCSI Commands
C156-E224-01EN 4-39
Table 4.66 Defect descriptor
Byte Defect Descriptor
0-2 Track address of defective block
3 00h
4-7 Sector address of defective block (See Table 4.67.)
Table 4.67 Sector address format
Bit
Byte
7 6 5 43210
0-2 00h
3 0 Media other than 2.3 GB: 00b
2.3-GB media: 00b groove
10b land
Sector address
4.3.23 SEND DIAGNOSTIC command
Table 4.68 SEND DIAGNOSTIC command
Bit
Byte
76543210
0 Operation Code (1Dh)
1 LUN Reserved SelfTest
Reserved Reserved
2Reserved
3-4 Parameter List Length
5Reserved
The SEND DIAGNOSTIC command instructs diagnostic operation from INIT.
If the SelfTest bit is 1, the command diagnoses the data buffer. If an error is
detected, the command responds with Check Condition. Parameter List Length
specifies the data length of the diagnostic parameters to be transferred.
The functions and specifications of the diagnostic parameters are not disclosed.
4.3.24 RECEIVE DIAGNOSTIC RESULTS command
Table 4.69 RECEIVE DIAGNOSTIC RESULTS command
Bit
Byte
76543210
0 Operation Code (1Ch)
1LUN Reserved
2Reserved
3-4 Allocation Length
5Reserved