Intel® Stratix® 10 Hard Processor System Technical Reference Manual
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16.5.9.5.5. The FLUSH CACHE EXT Command
The host issues a RW_REG command for the ATA command, and the status is retrieved with the SD/SDIO CMD39 or RW_REG command. There can be error status for this ATA command, in which case fields other than the status field of the ATA task file are valid.†
The host controller uses the following settings while sending the RW_REG command for the STANDBY IMMEDIATE ATA command:†
- cmd register setting: data_expected bit set to 0 †
- cmdarg register settings: †
- Bit [31] set to 1 †
- Bits [7:2] set to 4†
- All other bits set to 0†
- Task file settings: †
- Command field of the ATA task file set to 0xEA †
- Reserved fields of the task file set to 0†
- bytcnt register and block_size field of the blksiz register: set to 16 †