at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 750

• Manufacturer Part Number: at91sam9263
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

Figure 39-12. Multiple Write Functional Flow Diagram
750
AT91SAM9263 Preliminary
The following flowchart shows how to manage a multiple write block transfer with the PDC (see
Figure
the contents of the Interrupt Mask Register (MCI_IMR).
39-12). Polling or interrupt method can be used to wait for the end of write according to
Configure the PDC channel
MCI_TPR = Data Buffer Address to write
MCI_TCR = BlockLength/4
Send SET_BLOCKLEN command
Send SELECT/DESELECT_CARD
Set the PDCMODE bit
MCI_MR |= PDCMODE
Set the block length (in bytes)
MCI_MR |= (BlockLength << 16) (2)
Set the block count (if necessary)
MCI_BLKR |= (BlockCount << 0)
Send WRITE_MULTIPLE_BLOCK
command (1) to select the card
Send STOP_TRANSMISSION
Read status register MCI_SR
MCI_PTCR = TXTEN
NOTBUSY = 0?
command
command
BLKE = 0?
Poll the bit
Poll the bit
RETURN
No
No
(1)
(1)
(1)
Yes
Yes
6249D–ATARM–20-Dec-07