AT32UC3A3128 Atmel Corporation, AT32UC3A3128 Datasheet - Page 336

• Manufacturer Part Number: AT32UC3A3128
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A3128

• Flash (kbytes): 128 Kbytes
• Pin Count: 144
• Max. Operating Frequency: 66 MHz
• Cpu: 32-bit AVR
• # Of Touch Channels: 32
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 110
• Ext Interrupts: 110
• Usb Transceiver: 1
• Usb Speed: Hi-Speed
• Usb Interface: Device + OTG
• Spi: 6
• Twi (i2c): 2
• Uart: 4
• Lin: 4
• Ssc: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 384
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 16
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 128
• Self Program Memory: YES
• External Bus Interface: 1
• Dram Memory: sdram
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.0 to 3.6
• Operating Voltage (vcc): 3.0 to 3.6
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 6
• Output Compare Channels: 18
• Input Capture Channels: 12
• Pwm Channels: 12
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

19.10.1.4
32072G–11/2011
Multi-block Transfer with Source Address Auto-reloaded and Linked List Destination Address (Row7)
Figure 19-12. DMA Transfer Flow for Source and Destination Address Auto-reloaded
1. Read the Channel Enable register to choose a free (disabled) channel.
2. Set up the chain of linked list items (otherwise known as block descriptors) in memory.
Write the control information in the LLI.CTLx register location of the block descriptor for
each LLI in memory for channel x. For example, in the register you can program the
following:
a. Set up the transfer type (memory or non-memory peripheral for source and desti-
b. Set up the transfer characteristics, such as:
– i. Transfer width for the source in the SRC_TR_WIDTH field.
– ii. Transfer width for the destination in the DST_TR_WIDTH field.
– iii. Source master layer in the SMS field where source resides.
– iv. Destination master layer in the DMS field where destination resides.
– v. Incrementing/decrementing or fixed address for source in SINC field.
nation) and flow control peripheral by programming the TT_FC of the CTLx
register.
DMAC transfer Complete
interrupt generated here
Channel Disabled by
hardware
Block Complete interrupt
generated here
yes
interrupt cleared by software
Reload SARx, DARx, CTLx
DMAC State Machine Table?
Stall until block complete
Channel Enabled by
MASKBLOCK[x]=1?
Is DMAC in Row1 of
CTLx.INT_EN=1
Block Transfer
software
&&
yes
no
no
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