(13)IDENTIFY DEVICE DMA (X'EE')
When this command is not used to transfer data to the host in DMA mode, this command functions in the same way as the Identify Device command.
At command issuance (I/O registers setting contents)
1F7H(CM) | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | |
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1F6H(DH) | × | × | × | DV |
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| xx |
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1F5H(CH) |
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1F4H(CL) |
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1F3H(SN) |
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| xx |
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1F2H(SC) |
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1F1H(FR) |
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| xx |
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At command completion (I/O registers contents to be read)
1F7H(ST) |
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1F6H(DH) | × | × | × |
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| xx |
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1F5H(CH) |
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| xx |
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1F4H(CL) |
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| xx |
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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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(14)SET FEATURES (X'EF')
The host system issues the SET FEATURES command to set parameters in the Features register for the purpose of changing the device features to be executed. For the transfer mode (Feature register = 03), detail setting can be done using the Sector Count register.
Upon receipt of this command, the device sets the BSY bit of the Status register and saves the parameters in the Features register. Then, the device clears the BSY bit, and generates an interrupt.
If the value in the Features register is not supported or it is invalid, the device posts an ABORTED COMMAND error.
Table 5.5 lists the available values and operational modes that may be set in the Features register.
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