Receive Diagnostic Results Command (1Ch) - Seagate SCSI Interface Product Manual

SCSI Interface Product Manual, Rev. J
5.29

Receive Diagnostic Results command (1Ch)

The Receive Diagnostic Results command requests analysis data be sent to the initiator after completion of a
Send Diagnostic command. The drive supports the optional Page format, wherein the initiator sends additional
pages after a Send Diagnostic command. These additional pages have a page code that specifies to the drive
the format of the data to be returned after it receives a Receive Diagnostic Results command.
If no data in the optional Page format was requested by the Send Diagnostics command (0 in bit 4 of Table
164), the data returned to the initiator is in the format shown in Table 140.
If the Send Diagnostics command requested either page 00h or page 40h (the only two optional pages sup-
ported by the drive), data returned is in the format shown in Table 141 or 142, respectively.
All FRU and error code definitions are unique to this product and intended for factory/field maintenance person-
nel.
Table 139: Receive Diagnostic Results command (1Ch)
Bit 7
Byte
0 0
1 0
Logical Unit Number [1]
2 0
3 Allocation Length in Bytes (MSB) [2]
4 Allocation Length in Bytes (LSB) [2]
5 0
Notes.
[1] The Logical Unit Number must be zero.
[2] The Allocation Length shall specify the number of bytes the initiator has allocated for returned data. An
Allocation Length of zero indicates that no data shall be transferred. Any other value indicates the maxi-
mum number of bytes that shall be transferred. The drive terminates the Data In phase when Allocation
Length bytes have been transferred or when all available data has been transferred to the initiator, which-
ever is less.
[3] See "Control byte," paragraph 4.2.6.
6 5
0 0
0 0
0 0
0 0
4 3
1 1
0 0
0 0
0 0
2 1
1 0
0 0
0 0
0 Flag [3] Link [3]
181
0
0
0
0