5.3 Host Commands
(9)DOWNLOAD MICROCODE (X’92’)
At command issuance (Shadow Block Registers setting contents)
CM | 1 | 0 | 0 | 1 | 0 |
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DH | 1 | x | 1 |
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CH |
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CL |
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SN |
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| Sector count |
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SC |
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| Sector count |
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FR |
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| Subcommand code |
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At command completion (Shadow Block Registers contents to be read)
ST |
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DH | 1 | x | 1 |
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CH |
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CL |
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SN |
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SC |
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ER |
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| Error information |
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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 5.8.
In the data transfer of Subcommand code:01h, transfer by which data is divided into multiple times is possible. Refer to Table 5.9.
After the designation of rewriting by Subcommand code:07h, reactivates in the device for the update of the rewriting microcode of the microcode.
Table 5.8 Operation of DOWNLOAD MICROCODE
Host Command |
| Movement of device | ||
Subcommand code | Sector count | Data transfer | Microcode rewriting execution | |
(FR Field) | (SN, SC Field) | |||
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01h | 0000h | Non | Rewriting execution reservation | |
xxxxh | It is. | Rewriting execution reservation | ||
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07h | 0000h | Non | Execution. ** | |
xxxxh | It is. | Execution. ** | ||
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Excluding 01h and 07h | − |
| Abort |