5.3 Host Commands
(11) DOWNLOAD MICRO CODE (X’92’)
At command issuance (I/O registers setting contents)
1F7h(CM) | 1 | 0 | 0 | 1 | 0 |
| 0 | 1 | 0 | ||
1F6h(DH) | 1 | X | 1 |
| DV |
| 0 |
| 0 | 0 | 0 |
1F5h(CH) |
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| 00 |
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1F4h(CL) |
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| 00 |
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1F3h(SN) |
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| Sector count |
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1F2h(SC) |
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| Sector count |
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1F1h(FR) |
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| Subcommand code |
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At command completion (I/O registers contents to be read)
1F7h(ST) |
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| Status information |
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1F6h(DH) | 1 | X | 1 |
| DV |
| 0 |
| 0 | 0 | 0 |
1F5h(CH) |
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| 00 |
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1F4h(CL) |
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| 00 |
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1F3h(SN) |
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| XX |
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1F2h(SC) |
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| XX |
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1F1h(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
In the data transfer of Subcommand code:01h, transfer by which data is divided into multiple times is possible. Refer to Table
After the designation of rewriting by Subcommand code:07h, reactivates in the device for the update of the rewriting microcode of the microcode.