Datasheet

40.8.23 Auto CMD Error Status Register
Name: ACESR
Offset: 0x3C
Reset: 0x0000
Property: -
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
Setting this bit to 1 means CMD_wo_DAT is not executed due to an Auto CMD12 error (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 (refer to Table 1-7 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 (ACESR[4:2]) are meaningless.
ACMDCRC ACMDTEO Types of error
0 0 No error
0 1 Response Timeout error
SAM D5x/E5x Family Data Sheet
SD/MMC Host Controller ...
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 1363