40.8.7 SDHC_Response Register x
| Symbol | Description | Symbol | Description | Symbol | Description |
|---|---|---|---|---|---|
| R | Readable bit | HC | Cleared by Hardware | (Grey cell) | Unimplemented |
| W | Writable bit | HS | Set by Hardware | X | Bit is unknown at Reset |
| K | Write to clear | S | Software settable bit | — | — |
| Name: | RRx |
| Offset: | 0x10 + x*0x04 [x=0..3] |
| Reset: | 0x000000000 |
| Property: | - |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| CMDRESP[31:24] | |||||||||
| Access | R | R | R | R | R | R | R | R | |
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| CMDRESP[23:16] | |||||||||
| Access | R | R | R | R | R | R | R | R | |
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| CMDRESP[15:8] | |||||||||
| Access | R | R | R | R | R | R | R | R | |
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| CMDRESP[7:0] | |||||||||
| Access | R | R | R | R | R | R | R | R | |
| Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Bits 31:0 – CMDRESP[31:0] Command Response
The table below describes the mapping of command responses from the SD/SDIO/e.MMC bus to these registers for each responses type. In this table, R[] refers to a bit range of the response data as transmitted on the SD/SDIO/e.MMC bus.
| Type of response | Meaning of response | Response field | Response register |
|---|---|---|---|
| R1, R1b (normal response) | Card Status | R[39:8] | SDHC_RR0[31:0] |
| R1b (Auto CMD12 response) | Card Status for Auto CMD12 | R[39:8] | SDHC_RR3[31:0] |
| R1 (Auto CMD23 response) | Card Status for Auto CMD23 | R[39:8] | SDHC_RR3[31:0] |
| R2 (CID, CSD register) | CID or CSD register | R[127:8] | SDHC_RR0[31:0] SDHC_RR1[31:0] SDHC_RR2[31:0] SDHC_RR3[23:0] |
| R3 (OCR register) | OCR register for memory | R[39:8] | SDHC_RR0[31:0] |
| R4 (OCR register) | OCR register for I/O | R[39:8] | SDHC_RR0[31:0] |
| R5, R5b | SDIO response | R[39:8] | SDHC_RR0[31:0] |
| R6 (Published RCA response) | New published RCA[31:16] and Card status bits | R[39:8] | SDHC_RR0[31:0] |