SAM9G45 Atmel Corporation, SAM9G45 Datasheet - Page 618

• Manufacturer Part Number: SAM9G45
• Manufacturer: Atmel Corporation

Specifications of SAM9G45

• Flash (kbytes): 0 Kbytes
• Pin Count: 324
• Max. Operating Frequency: 400 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 160
• Ext Interrupts: 160
• Usb Transceiver: 3
• Usb Speed: Hi-Speed
• Usb Interface: Host, Device
• Spi: 2
• Twi (i2c): 2
• Uart: 5
• Lin: 4
• Ssc: 2
• Ethernet: 1
• Sd / Emmc: 2
• Graphic Lcd: Yes
• Video Decoder: No
• Camera Interface: Yes
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 440
• Resistive Touch Screen: Yes
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 64
• Self Program Memory: NO
• External Bus Interface: 2
• Dram Memory: DDR2/LPDDR, SDRAM/LPSDR
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 0.9 to 1.1
• Fpu: No
• Mpu / Mmu: No/Yes
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

Figure 34-8. Read Functional Flow Diagram
Notes:
618
618
1. It is assumed that this command has been correctly sent (see
2. This field is also accessible in the HSMCI Block Register (HSMCI_BLKR).
SAM9G35
SAM9G35
Number of words to read = BlockLength/4
Reset the DMAEN bit
HSMCI_DMA &= ~DMAEN
Set the block length (in bytes)
HSMCI_MR l= (BlockLength<<16) (2)
Set the block count (if neccessary)
HSMCI_BLKR l= (BlockCount<<0)
Read status register HSMCI_SR
Number of words to read = 0 ?
Send READ_SINGLE_BLOCK
Number of words to read -1
Number of words to read =
Read data = HSMCI_RDR
RXRDY = 0?
No
command (1)
Poll the bit
No
No
Send SET_BLOCKLEN command
Send SELECT/DESELECT_CARD
command
Yes
Yes
RETURN
Read with DMAC
(1)
to select the card
Figure
(1)
Set the DMAEN bit
HSMCI_DMA |= DMAEN
Set the block length (in bytes)
HSMCI_BLKR |= (BlockLength << 16)
34-7).
Configure the DMA channel X
DMAC_SADDRx = Data Address
DMAC_BTSIZE = BlockLength/4
DMACHEN[X] = TRUE
Send READ_SINGLE_BLOCK
Read status register HSMCI_SR
Yes
command
XFRDONE = 0?
RETURN
Poll the bit
No
(1)
(2)
11053B–ATARM–22-Sep-11
11053B–ATARM–22-Sep-11
Yes