Datasheet

Table Of Contents
40.8.18 Error Interrupt Status Register
Name:  EISTR
Offset:  0x32
Reset:  0x0000
Property:  -
Bit 15 14 13 12 11 10 9 8
BOOTAE ADMA ACMD
Access
R/W R/W R/W
Reset 0 0 0
Bit 7 6 5 4 3 2 1 0
CURLIM DATEND DATCRC DATTEO CMDIDX CMDEND CMDCRC CMDTEO
Access
R/W R/W R/W R/W R/W R/W R/W R/W
Reset 0 0 0 0 0 0 0 0
Bit 12 – BOOTAE Boot Acknowledge Error
Note:  This register entry is specific to the e.MMC operation mode.
This bit is set to 1 when detecting that the e.MMC Boot Acknowledge Status has a value other than “010”.
This bit can only be set to 1 if EISTER.BOOTAE is set to 1. An interrupt can only be generated if
EISIER.BOOTAE is set to 1.
Writing this bit to 1 clears this bit.
Value Description
0
No error
1
Error
Bit 9 – ADMA ADMA Error
This bit is set to 1 when the peripheral detects errors during an ADMA-based data transfer. The state of
the ADMA at an error occurrence is saved in AESR.
In addition, the peripheral rises this status bit when it detects some invalid description data (Valid=0) at
the ST_FDS state (refer to section “Advanced DMA” in the “SD Host Controller Simplified Specification
V3.00”. ADMA Error Status (ERRST) in AESR indicates that an error occurs in ST_FDS state. The user
may find that the Valid bit is not set at the error descriptor.
This bit can only be set to 1 if EISTER.ADMA is set to 1. An interrupt can only be generated if
EISIER.ADMA is set to 1.
Writing this bit to 1 clears this bit.
Value Description
0
No error
1
Error
Bit 8 – ACMD Auto CMD Error
Auto CMD12 and Auto CMD23 use this error status. This bit is set to 1 when detecting that one of the 0 to
4 bits in AESR (ACESR[4:0]) has changed from 0 to 1. In the case of Auto CMD12, this bit is set to 1, not
only when errors occur in Auto CMD12, but also when Auto CMD12 is not executed due to the previous
command error.
This bit can only be set to 1 if EISTER.ACMD is set to 1. An interrupt can only be generated if
EISIER.ACMD is set to 1.
SAM D5x/E5x Family Data Sheet
SD/MMC Host Controller ...
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 1351