Datasheet

939
SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
37.12 HSMCI Transfer Done Timings
37.12.1 Definition
The XFRDONE flag in the HSMCI_SR indicates exactly when the read or write sequence is finished.
37.12.2 Read Access
During a read access, the XFRDONE flag behaves as shown in Figure 37-12.
Figure 37-12. XFRDONE During a Read Access
37.12.3 Write Access
During a write access, the XFRDONE flag behaves as shown in Figure 37-13.
Figure 37-13. 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