AT32UC3A0128AU Atmel Corporation, AT32UC3A0128AU Datasheet - Page 451
AT32UC3A0128AU
Manufacturer Part Number
AT32UC3A0128AU
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT32UC3A0128.pdf
(98 pages)
2.AT32UC3A0128.pdf
(826 pages)
3.AT32UC3A0128.pdf
(377 pages)
4.AT32UC3A0128.pdf
(33 pages)
5.AT32UC3A0128.pdf
(159 pages)
6.AT32UC3A0128AU.pdf
(2 pages)
Specifications of AT32UC3A0128AU
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
109
Ext Interrupts
109
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device + OTG
Spi
6
Twi (i2c)
1
Uart
4
Ssc
1
Ethernet
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)
32
Self Program Memory
YES
External Bus Interface
1
Dram Memory
sdram
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
3.0-3.6 or (1.65-1.95+3.0-3.6)
Operating Voltage (vcc)
3.0-3.6 or (1.65-1.95+3.0-3.6)
Fpu
No
Mpu / Mmu
Yes / No
Timers
10
Output Compare Channels
16
Input Capture Channels
6
Pwm Channels
13
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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29.6
29.6.1
29.6.1.1
29.6.1.2
Figure 29-2. Receive Buffer List
Programming Interface
Initialization
Configuration
Receive Buffer List
Receive Buffer Queue Pointer
(MAC Register)
Initialization of the MACB configuration (e.g. frequency ratios) must be done while the transmit
and receive circuits are disabled. See the description of the network control register and network
configuration register later in this document.
Receive data is written to areas of data (i.e., buffers) in system memory. These buffers are listed
in another data structure that also resides in main memory. This data structure (receive buffer
queue) is a sequence of descriptor entries as defined in
page
To create the list of buffers:
1. Allocate a number (n) of buffers of 128 bytes in system memory.
2. Allocate an area 2n words for the receive buffer descriptor entry in system memory and
3. If less than 1024 buffers are defined, the last descriptor must be marked with the wrap bit
4. Write address of receive buffer descriptor entry to MACB register receive_buffer queue
5. The receive circuits can then be enabled by writing to the address recognition registers
create n entries in this list. Mark all entries in this list as owned by MACB, i.e., bit 0 of
word 0 set to 0.
(bit 1 in word 0 set to 1).
pointer.
and then to the network control register.
440. It points to this data structure.
Receive Buffer Descriptor List
(In memory)
”Receive Buffer Descriptor Entry” on
Receive Buffer 1
Receive Buffer 0
Receive Buffer N
(In memory)
AT32UC3A
451
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