AT32UC3C0512CAU Atmel Corporation, AT32UC3C0512CAU Datasheet - Page 503
AT32UC3C0512CAU
Manufacturer Part Number
AT32UC3C0512CAU
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT32UC3A0128.pdf
(377 pages)
2.AT32UC3A0128.pdf
(159 pages)
3.AT32UC3A0128AU.pdf
(2 pages)
4.AT32UC3C0128C.pdf
(1313 pages)
5.AT32UC3C0128C.pdf
(108 pages)
Specifications of AT32UC3C0512CAU
Flash (kbytes)
512 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
123
Ext Interrupts
144
Usb Transceiver
1
Quadrature Decoder Channels
2
Usb Speed
Full Speed
Usb Interface
Device + OTG
Spi
7
Twi (i2c)
3
Uart
5
Can
2
Lin
5
Ssc
1
Ethernet
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
16
Adc Resolution (bits)
12
Adc Speed (ksps)
2000
Analog Comparators
4
Resistive Touch Screen
No
Dac Channels
4
Dac Resolution (bits)
12
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
68
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 to 3.6 or 4.5 to 5.5
Operating Voltage (vcc)
3.0 to 3.6 or 4.5 to 5.5
Fpu
Yes
Mpu / Mmu
Yes / No
Timers
6
Output Compare Channels
22
Input Capture Channels
12
Pwm Channels
20
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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- AT32UC3A0128 PDF datasheet
- AT32UC3A0128 PDF datasheet #2
- AT32UC3A0128AU PDF datasheet #3
- AT32UC3C0128C PDF datasheet #4
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24.6.3
24.6.4
24.6.5
24.6.6
32117C–AVR-08/11
Transmit Buffer List
Address Matching
Interrupts
Transmitting Frames
Transmit data is read from the system memory These buffers are listed in another data structure
that also resides in main memory. This data structure (Transmit Buffer Queue) is a sequence of
descriptor entries (as defined in
To create this list of buffers:
The MACB register-pair hash address and the four specific address register-pairs must be writ-
ten with the required values. Each register-pair comprises a bottom register and top register,
with the bottom register being written first. The address matching is disabled for a particular reg-
ister-pair after the bottom-register has been written and re-enabled when the top register is
written.
may be written at any time, regardless of whether the receive circuits are enabled or disabled.
There are 14 interrupt conditions that are detected within the MACB. These are ORed to make a
single interrupt. This interrupt is handled by the interrupt controller. On receipt of the interrupt
signal, the CPU enters the interrupt handler. To ascertain which interrupt has been generated,
read the interrupt status register. Note that this register clears itself when read. At reset, all inter-
rupts are disabled. To enable an interrupt, write to interrupt enable register with the pertinent
interrupt bit set to 1. To disable an interrupt, write to interrupt disable register with the pertinent
interrupt bit set to 1. To check whether an interrupt is enabled or disabled, read interrupt mask
register: if the bit is set to 1, the interrupt is disabled.
To set up a frame for transmission:
1. Allocate a number (n) of buffers of between 1 and 2047 bytes of data to be transmitted
2. Allocate an area 2n words for the transmit buffer descriptor entry in system memory
3. If fewer than 1024 buffers are defined, the last descriptor must be marked with the wrap
4. Write address of transmit buffer descriptor entry to MACB register transmit buffer queue
5. The transmit circuits can then be enabled by writing to the network control register.
1. Enable transmit in the network control register.
2. Allocate an area of system memory for transmit data. This does not have to be contigu-
3. Set-up the transmit buffer list.
4. Set the network control register to enable transmission and enable interrupts.
5. Write data for transmission into these buffers.
6. Write the address to transmit buffer descriptor queue pointer.
7. Write control and length to word one of the transmit buffer descriptor entry.
8. Write to the transmit start bit in the network control register.
in system memory. Up to 128 buffers per frame are allowed.
and create N entries in this list. Mark all entries in this list as owned by MACB, i.e. bit 31
of word 1 set to 0.
bit (bit 30 in word 1 set to 1).
pointer.
ous, varying byte lengths can be used as long as they conclude on byte borders.
See Section “24.5.8” on page 496.
Table 24-2 on page
for details of address matching. Each register-pair
493) that points to this data structure.
AT32UC3C
503
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