AT91SAM9M10-G45-EK Atmel, AT91SAM9M10-G45-EK Datasheet - Page 719
AT91SAM9M10-G45-EK
Manufacturer Part Number
AT91SAM9M10-G45-EK
Description
KIT EVAL FOR AT91SAMG45/9M10
Manufacturer
Atmel
Series
AT91SAM Smart ARMr
Type
MCUr
Specifications of AT91SAM9M10-G45-EK
Contents
Board, Cables, Power Supply
Processor To Be Evaluated
AT91SAM9M10
Processor Series
AT91SAM9
Data Bus Width
32 bit
Interface Type
RS-232, Ethernet, USB, JTAG
Operating Supply Voltage
5 V
Silicon Manufacturer
Atmel
Core Architecture
AVR
Kit Contents
Board
Features
Two High Speed USB Hosts, LCD TFT Display
Svhc
No SVHC (15-Dec-2010)
Mcu Supported Families
AT91SAM9M10,
Rohs Compliant
Yes
For Use With/related Products
AT91SAM9M10
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT91SAM9M10-G45-EK
Manufacturer:
INFINEON
Quantity:
10 000
Company:
Part Number:
AT91SAM9M10-G45-EK
Manufacturer:
Atmel
Quantity:
135
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35.8.6
35.8.6.1
6355B–ATARM–21-Jun-10
READ_SINGLE_BLOCK Operation using DMA Controller
Block Length is Multiple of 4
7. Wait for XFRDONE in HSMCI_SR register.
1. Wait until the current command execution has successfully completed.
2. Program the block length in the card. This value defines the value block_length.
3. Program the block length in the HSMCI configuration register with block_length value.
4. Set RDPROOF bit in HSMCI_MR to avoid overflow.
5. Program HSMCI_DMA register with the following fields:
6. Issue a READ_SINGLE_BLOCK command.
7. Program the DMA controller.
i.
a. Check that CMDRDY and NOTBUSY are asserted in HSMCI_SR.
– ROPT field is set to 0.
– OFFSET field is set to 0.
– CHKSIZE is user defined.
– DMAEN is set to true to enable DMAC hardware handshaking in the HSMCI. This bit
a. Read the channel Register to choose an available (disabled) channel.
b. Clear any pending interrupts on the channel from the previous DMA transfer by
c. Program the channel registers.
d. The DMAC_SADDRx register for channel x must be set with the starting address of
e. The DMAC_DADDRx register for channel x must be word aligned.
f.
g. Program DMAC_CTRLBx register for channel x with the following field’s values:
– DST_INCR is set to INCR.
– SRC_INCR is set to INCR.
– FC field is programmed with peripheral to memory flow control mode.
– both DST_DSCR and SRC_DSCR are set to 1 (descriptor fetch is disabled).
– DIF and SIF are set with their respective layer ID. If SIF is different from DIF, the
h. Program DMAC_CFGx register for channel x with the following field’s values:
was previously set to false.
DMA controller is able to prefetch data and write HSMCI simultaneously.
Enable Channel x, writing one to DMAC_CHER[x]. The DMAC is ready and waiting
for request.
reading the DMAC_EBCISR register.
the HSMCI_FIFO address.
Program DMAC_CTRLAx register of channel x with the following field’s values:
–DST_WIDTH is set to WORD.
–SRC_WIDTH is set to WORD.
–SCSIZE must be set according to the value of HSMCI_DMA, CHKSIZE field.
–BTSIZE is programmed with block_length/4.
–FIFOCFG defines the watermark of the DMA channel FIFO.
–SRC_H2SEL is set to true to enable hardware handshaking on the destination.
–SRC_PER is programmed with the hardware handshaking ID of the targeted
HSMCI Host Controller.
AT91SAM9M10
719
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