ATxmega32A4 Atmel Corporation, ATxmega32A4 Datasheet - Page 58
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ATxmega32A4
Manufacturer Part Number
ATxmega32A4
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega32A4
Flash (kbytes)
32 Kbytes
Pin Count
44
Max. Operating Frequency
32 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
34
Ext Interrupts
34
Usb Speed
No
Usb Interface
No
Spi
7
Twi (i2c)
2
Uart
5
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
12
Adc Resolution (bits)
12
Adc Speed (ksps)
2000
Analog Comparators
2
Resistive Touch Screen
No
Dac Channels
2
Dac Resolution (bits)
12
Temp. Sensor
Yes
Crypto Engine
AES/DES
Sram (kbytes)
4
Eeprom (bytes)
1024
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
Yes
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.6 to 3.6
Operating Voltage (vcc)
1.6 to 3.6
Fpu
No
Mpu / Mmu
no / no
Timers
5
Output Compare Channels
16
Input Capture Channels
16
Pwm Channels
16
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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- Current page: 58 of 445
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5.14.4
8077H–AVR–12/09
TRIGSRC - DMA Channel Trigger Source
Table 5-6.
• Bit 1:0 - DESTDIR[1:0]: DMA Channel Destination Address Mode
These bits decide the DMA channel destination address mode according to
58. These bits can not be changed if the channel is busy.
Table 5-7.
• Bit 7:0 - TRIGSRC[7:0]: DMA Channel Trigger Source Select
These bits select which trigger source is used for triggering a transfer on the DMA channel. A
zero value means that the trigger source is disabled. For each trigger source the value to put in
the TRIGSRC register is the sum of the module or peripheral’s base value, and the offset value
for the trigger source in the module or peripherals.
for all module and peripherals.
value for the trigger sources in the different modules and peripheral types. For modules or
peripherals which does not exist for a device, the transfer trigger does not exist. Refer to the
device data sheet for the list of peripherals available.
Bit
+0x03
Read/Write
Initial Value
DESTRELOAD[1:0]
DESTDIR[1:0]
00
01
10
11
00
01
10
11
R/W
DMA channel destination address reload settings
DMA channel destination address mode settings
7
0
Group Configuration
Group Configuration
R/W
6
0
TRANSACTION
BLOCK
BURST
NONE
FIXED
DEC
Table 5-9 on page 59
INC
R/W
-
5
0
R/W
4
0
TRIGSRC[7:0]
Description
Fixed
Increment
Decrement
Reserved
Description
No reload performed.
DMA channel destination address register is reloaded
with initial value at end of each block transfer.
DMA channel destination address register is reloaded
with initial value at end of each burst transfer.
DMA channel destination address register is reloaded
with initial value at end of each transaction.
R/W
Table 5-8 on page 59
3
0
to
Table 5-12 on page 60
R/W
2
0
R/W
1
0
shows the base value
XMEGA A
Table 5-7 on page
R/W
shows the offset
0
0
TRIGSRC
58
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