Atmel SAM4S-XPLD Atmel ATSAM4S-XPLD ATSAM4S-XPLD Hoja De Datos

 821

SAM4S [DATASHEET]

11100E–ATARM–24-Jul-13

Note:

1.

It is assumed that this command has been correctly sent (see 

).

Send SELECT/DESELECT_CARD

command

(1)

to select the card

Send SET_BLOCKLEN command

(1)

Set the PDCMODE bit
HSMCI_MR = PDCMODE
Set the block length
HSMCI_MR = (BlockLength

16)

Configure the PDC channel
HSMCI_TPR = Data Buffer Address
HSMCI_TCR = BlockLength/4

Send WRITE_MULTIPLE_BLOCK

command

(1)

Read status register HSMCI_SR

Poll the bit

BLKE = 0

Yes

No

HSMCI_PTCR = TXTEN

Poll the bit

NOTBUSY = 0

Yes

RETURN

No

Send STOP_TRANSMISSION

command

(1)