Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet
Product codes
AT91SAM9N12-EK
587
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
35.12 HSMCI Transfer Done Timings
35.12.1 Definition
The XFRDONE flag in the HSMCI_SR indicates exactly when the read or write sequence is finished.
35.12.2 Read Access
During a read access, the XFRDONE flag behaves as shown in
Figure 35-11. XFRDONE During a Read Access
35.12.3 Write Access
During a write access, the XFRDONE flag behaves as shown in
.
Figure 35-12. XFRDONE During a Write Access
CMD line
HSMCI read CMD
Card response
CMDRDY flag
Data
1st Block
Last Block
Not busy flag
XFRDONE flag
The CMDRDY flag is released 8 tbit after the end of the card response.
CMD line
Card response
CMDRDY flag
Data bus - D0
1st Block
Not busy flag
XFRDONE flag
The CMDRDY flag is released 8 tbit after the end of the card response.
Last Block
D0
1st Block
Last Block
D0 is tied by the card
D0 is released
HSMCI write CMD