SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
Figure 27-41 shows the read and write CE-ATA protocol when in polling mode.
Figure 27-41 eMMC/SD/SDIO Controller Read/Write in CE-ATA Mode| Register Name | Register Name | Register Name |
|---|---|---|
| MMCHS_PSTATE | MMCHS_CON | MMCHS_IE |
| MMCHS_CMD | MMCHS_STAT | |
| MMCHS_ARG | MMCHS_SYSCTL |
| Subprocess Name | Cross-Reference |
|---|---|
| Perform CMD line reset. | See Section 27.5.1.2.1.1.1, CMD Line Reset Procedure. |
| Perform DATA lines reset. | See Section 27.5.1.2.1.2.1, DATA Lines Reset Procedure. |
CE-ATA protocol is supported only by MMC cards.
In CE-ATA mode, issuing a command during the transfer (except a CCSD command) is not allowed.
In CE-ATA mode, infinite transfers are not allowed; only finite transfers are permitted.