AT32UC3B064-Z2UR Atmel, AT32UC3B064-Z2UR Datasheet - Page 402
![MCU AVR32 64K FLASH 64-QFN](/photos/12/13/121326/313-64-qfn_sml.jpg)
AT32UC3B064-Z2UR
Manufacturer Part Number
AT32UC3B064-Z2UR
Description
MCU AVR32 64K FLASH 64-QFN
Manufacturer
Atmel
Series
AVR®32 UC3r
Datasheet
1.AT32UC3B164-AUR.pdf
(680 pages)
Specifications of AT32UC3B064-Z2UR
Package / Case
64-QFN
Voltage - Supply (vcc/vdd)
1.65 V ~ 1.95 V
Operating Temperature
-40°C ~ 85°C
Speed
60MHz
Number Of I /o
44
Core Processor
AVR
Program Memory Type
FLASH
Ram Size
16K x 8
Program Memory Size
64KB (64K x 8)
Data Converters
A/D 8x10b
Oscillator Type
Internal
Peripherals
Brown-out Detect/Reset, DMA, POR, PWM, WDT
Connectivity
I²C, IrDA, SPI, SSC, UART/USART, USB
Core Size
32-Bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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22.7.4.2
22.7.4.3
32059J–12/2010
USB DMA Channel X Registers
(Current Transfer Descriptor)
Next Descriptor Address
Memory Area
Data Buffer 1
Data Buffer 2
Data Buffer 3
HSB Address
Control
Status
DMA Channel descriptor
Programming a chanel:
Figure 22-30. Example of DMA Chained List
The DMA channel transfer descriptor is loaded from the memory.
Be careful with the alignment of this buffer.
The structure of the DMA channel transfer descriptor is defined by three parameters as
described below:
• Offset 0:
• Offset 4:
• Offset 8:
Each DMA transfer is unidirectionnal. Direction depends on the type of the associated endpoint
(IN or OUT).
Three registers, the UDDMAnNEXTDESC, the UDDMAnADDR and UDDMAnCONTROL need
to be programmed to set up wether single or multiple transfer is used.
The following example refers to OUT endpoint. For IN endpoint, the programming is symmetric.
– The address must be aligned: 0xXXXX0
– DMA Channel n Next Descriptor Address Register: DMAnNXTDESCADDR
– The address must be aligned: 0xXXXX4
– DMA Channel n HSB Address Register: DMAnADDR
– The address must be aligned: 0xXXXX8
– DMA Channel n Control Register: DMAnCONTROL
Next Descriptor Address
Transfer Descriptor
HSB Address
Control
Next Descriptor Address
Transfer Descriptor
HSB Address
Control
Next Descriptor Address
Transfer Descriptor
HSB Address
Control
AT32UC3B
NULL
402
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