SAM9X25 Atmel Corporation, SAM9X25 Datasheet - Page 849

• Manufacturer Part Number: SAM9X25
• Manufacturer: Atmel Corporation

Specifications of SAM9X25

• Flash (kbytes): 0 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 400 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 105
• Ext Interrupts: 105
• Usb Transceiver: 3
• Usb Speed: Hi-Speed
• Usb Interface: Host, Device
• Spi: 2
• Twi (i2c): 3
• Uart: 7
• Can: 2
• Lin: 4
• Ssc: 1
• Ethernet: 2
• Sd / Emmc: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 12
• Adc Resolution (bits): 10
• Adc Speed (ksps): 440
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 32
• Self Program Memory: NO
• External Bus Interface: 1
• Dram Memory: DDR/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 39-51. Master Node with DMAC (PDCM = 1)
11054A–ATARM–27-Jul-11
11054A–ATARM–27-Jul-11
WRITE BUFFER
Master Node Configuration
IDENTIFIER
CHKTYP
PARDIS
CHKDIS
DATA N
DATA 0
FSDIS
NACT
DLM
DLC
|
|
|
|
(Peripheral) DMA
Controller
The user can choose between two DMAC modes by the PDCM bit in the LIN Mode register
(US_LINMR):
The WRITE buffer also contains the Identifier and the DATA, if the USART sends the response
(NACT = PUBLISH).
The READ buffer contains the DATA if the USART receives the response (NACT =
SUBSCRIBE).
• PDCM = 1: the LIN configuration is stored in the WRITE buffer and it is written by the DMAC
• PDCM = 0: the LIN configuration is not stored in the WRITE buffer and it must be written by
in the Transmit Holding register US_THR (instead of the LIN Mode register US_LINMR).
Because the DMAC transfer size is limited to a byte, the transfer is split into two accesses.
During the first access the bits, NACT, PARDIS, CHKDIS, CHKTYP, DLM and FSDIS are
written. During the second access the 8-bit DLC field is written.
the user in the LIN Mode register (US_LINMR).
APB bus
TXRDY
NODE ACTION = PUBLISH
LIN CONTROLLER
USART3
WRITE BUFFER
READ BUFFER
IDENTIFIER
CHKTYP
CHKDIS
PARDIS
DATA N
DATA 0
FSDIS
NACT
DLM
DLC
|
|
|
|
(Peripheral) DMA
Controller
APB bus
RXRDY
TXRDY
NODE ACTION = SUBSCRIBE
SAM9X25
SAM9X25
LIN CONTROLLER
USART3
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