AT91SAM9G10-EK Atmel, AT91SAM9G10-EK Datasheet - Page 559

• Manufacturer Part Number: AT91SAM9G10-EK
• Description: KIT DEV FOR SAM9G10 ARM
• Manufacturer: Atmel
• Type: MCUr

Specifications of AT91SAM9G10-EK

• Contents: Board, Cables, Power Supply
• Silicon Manufacturer: Atmel
• Core Architecture: AVR
• Kit Contents: Board
• Svhc: No SVHC (15-Dec-2010)
• Mcu Supported Families: AT91SAM9G10, ARM926EJ-S
• Tool / Board Applications: Microcontroller
• Rohs Compliant: Yes
• For Use With/related Products: *
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Figure 35-8. Read Functional Flow Diagram
Note:
6462A–ATARM–03-Jun-09
1. It is assumed that this command has been correctly sent (see
2. This field is also accessible in the MCI Block Register (MCI_BLKR).
Number of words to read = BlockLength/4
Reset the DMAEN bit
MCI_DMA &= ~DMAEN
Set the block length (in bytes)
MCI_MR |= (BlockLenght <<16)
Set the block count (if necessary)
MCI_BLKR |= (BlockCount << 0)
Number of words to read = 0 ?
Read status register MCI_SR
Send READ_SINGLE_BLOCK
Number of words to read -1
Number of words to read =
Read data = MCI_RDR
RXRDY = 0?
No
command
Poll the bit
No
(1)
No
(2)
Send SET_BLOCKLEN command
Send SELECT/DESELECT_CARD
command
Yes
Yes
RETURN
Read with HDMA
(1)
to select the card
Figure
(1)
Set the DMAEN bit
MCI_MR |= DMAEN
Set the block length (in bytes)
MCI_BLKR |= (BlockLength << 16)
35-7).
Configure the DMA channel X
HDMA_SADDRX = Data Address
HDMA_BTSIZE = BlockLength/4
HDMACHEN[X] = TRUE
Send READ_SINGLE_BLOCK
Yes
Read status register MCI_SR
command (1)
XFRDONE = 0?
Poll the bit
RETURN
No
AT91SAM9G10
(2)
Yes
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