5.3 Host Commands
C141-E203-01EN 5-41
(11) DOWNLOAD MICROCODE (X’92’)
At command issuance (Shadow Block Registers setting contents)
CM
1 0 0 1 0 0 1 0
DH
1 x 1 x 0 0 0 0
CH 00
CL 00
SN
Sector count (15-8)
SC
Sector count (7-0)
FR Subcommand
code
At command completion (Shadow Block Registers contents to be read)
ST Status
information
DH
1 x 1 x 0 0 0 0
CH 00
CL 00
SN xx
SC
xx
ER Error
information
This command rewrites the microcode of the device (firmware).
When this command is accepted, the device does beginning the data transfer of the
microcode or the microcode rewriting according to Subcommand code (Rewriting is
also possible simultaneously with the data transfer). Refer to Table 5.7.
In the data transfer of Subcommand code:01h, transfer by which data is divided
into multiple times is possible. Refer to Table 5.8.
After the designation of rewriting by Subcommand code:07h, reactivates in the
device for the update of the rewriting microcode of the microcode.
Table 5.7 Operation of DOWNLOAD MICROCODE
Host Command
Movement of device
Subcommand code
(FR Field)
Sector count
(SN, SC Field)
Data transfer
Microcode rewriting execution
0000h
Non
Rewriting execution reservation
01h
xxxxh
It is.
Rewriting execution reservation
0000h Non
Execution.
**
07h
xxxxh
It is.
Execution. **
Excluding 01h and 07h
−
Abort
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