AT32UC3A0128 Atmel Corporation, AT32UC3A0128 Datasheet - Page 570

• Manufacturer Part Number: AT32UC3A0128
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A0128

• 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

32058K AVR32-01/12
30.8.2.9
Offset:
Register Name:
Access Type:
Reset Value:
• EPENX, X in [0..6]: Endpoint X Enable
Set to enable the endpoint X.
Clear to disable the endpoint X, what forces the endpoint X state to inactive (no answer to USB requests) and resets the
endpoint X registers (UECFGX, UESTAX, UECONX) but not the endpoint configuration (ALLOC, EPBK, EPSIZE, EPDIR,
EPTYPE).
• EPRSTX, X in [0..6]: Endpoint X Reset
Set by software to reset the endpoint X FIFO prior to any other operation, upon hardware reset or when a USB bus reset
has been received. This resets the endpoint X registers (UECFGX, UESTAX, UECONX) but not the endpoint configuration
(ALLOC, EPBK, EPSIZE, EPDIR, EPTYPE).
All the endpoint mechanism (FIFO counter, reception, transmission, etc.) is reset apart from the Data Toggle Sequence
field (DTSEQ) which can be cleared by setting the RSTDT bit (by setting the RSTDTS bit).
The endpoint configuration remains active and the endpoint is still enabled.
Then, clear by software to complete the reset operation and to start using the FIFO.
Cleared by hardware upon receiving a USB reset.
31
23
15
–
–
–
7
–
USB Endpoint Enable/Reset Register (UERST)
EPRST6
EPEN6
rwu
30
22
14
rw
–
0
–
6
0
EPRST5
EPEN5
rwu
29
21
13
rw
–
0
–
5
0
0x001C
UERST
Read/Write
0x00000000
EPRST4
EPEN4
rwu
28
20
12
rw
–
0
–
4
0
EPRST3
EPEN3
rwu
27
19
11
rw
–
0
–
3
0
EPRST2
EPEN2
rwu
26
18
10
rw
–
0
–
2
0
EPRST1
EPEN1
rwu
25
17
rw
–
0
9
–
1
0
AT32UC3A
EPRST0
EPEN0
rwu
24
16
rw
–
0
8
–
0
0
570