48.10.31 SDMMC Auto CMD Error Status Register


Bit	15	14	13	12	11	10	9	8

Access
Reset


Bit	7	6	5	4	3	2	1	0
	CMDNI			ACMDIDX	ACMDEND	ACMDCRC	ACMDTEO	ACMD12NE
Access	R			R	R	R	R	R
Reset	0			0	0	0	0	0

Bit 7 – CMDNI Command Not Issued by Auto CMD12 Error

This bit is set to 1 when CMD_wo_DAT is not executed due to an Auto CMD12 error (SDMMC_ACESR[4:1]). This bit is set to 0 when Auto CMD Error is generated by Auto CMD23.

Value	Description
0	No error.
1	Error.

Bit 4 – ACMDIDX Auto CMD Index Error

This bit is set to 1 when the Command Index error occurs in response to a command.

Value	Description
0	No error.
1	Error.

Bit 3 – ACMDEND Auto CMD End Bit Error

This bit is set to 1 when detecting that the end bit of the command response is 0.

Value	Description
0	No error.
1	Error.

Bit 2 – ACMDCRC Auto CMD CRC Error

This bit is set to 1 when detecting a CRC error in the command response (see table Relation between ACMDCRC and ACMDTEO for more details).

Bit 1 – ACMDTEO Auto CMD Timeout Error

This bit is set to 1 if no response is returned within 64 SDCLK cycles from the end bit of the command. If this bit is set to 1, the other error status bits (SDMMC_ACESR[4:2]) are meaningless.

Table 48-4. Relation between ACMDCRC and ACMDTEO
ACMDCRC	ACMDTEO	Error Types
0	0	No error
0	1	Response Timeout error
1	0	Response CRC error
1	1	CMD line conflict

Bit 0 – ACMD12NE Auto CMD12 Not Executed

If a memory multiple block data transfer is not started due to a command error, this bit is not set to 1 because it is not necessary to issue Auto CMD12. Setting this bit to 1 means the SDMMC cannot issue Auto CMD12 to stop a memory multiple block data transfer due to some error. If this bit is set to 1, other error status bits (SDMMC_ACESR[4:1]) are meaningless.

This bit is set to 0 when an Auto CMD error is generated by Auto CMD23.

Value	Description
0	No error.
1	Error.

Name:	SDMMC_ACESR
Offset:	0x3C
Reset:	0x0000
Property:	Read-only