AT32UC3A3128 Atmel Corporation, AT32UC3A3128 Datasheet - Page 643

• Manufacturer Part Number: AT32UC3A3128
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A3128

• 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: 110
• Ext Interrupts: 110
• Usb Transceiver: 1
• Usb Speed: Hi-Speed
• Usb Interface: Device + OTG
• Spi: 6
• Twi (i2c): 2
• Uart: 4
• Lin: 4
• Ssc: 1
• Sd / Emmc: 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): 128
• Self Program Memory: YES
• External Bus Interface: 1
• Dram Memory: sdram
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.0 to 3.6
• Operating Voltage (vcc): 3.0 to 3.6
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 6
• Output Compare Channels: 18
• Input Capture Channels: 12
• Pwm Channels: 12
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

26.7.2.18
26.7.2.19
32072G–11/2011
CRC error
Interrupts
•Global interrupts
•Endpoint interrupts
For instance, if NBTRANS is three (three transactions per micro-frame), if only the first IN token
(among 3) is well received by the USBB, then the two last banks will be discarded.
This error exists only for isochronous OUT endpoints. It set the CRC Error Interrupt (CRCERRI)
bit in UESTAn, what triggers an EPnINT interrupt if the CRC Error Interrupt Enable (CRCERRE)
bit is one.
A CRC error can occur during OUT stage if the USBB detects a corrupted received packet. The
OUT packet is stored in the bank as if no CRC error had occurred (RXOUTI is set).
See the structure of the USB device interrupt system on
There are two kinds of device interrupts: processing, i.e. their generation is part of the normal
processing, and exception, i.e. errors (not related to CPU exceptions).
The processing device global interrupts are:
The exception device global interrupts are:
The processing device endpoint interrupts are:
The exception device endpoint interrupts are:
• The Suspend (SUSP) interrupt
• The Start of Frame (SOF) interrupt with no frame number CRC error (the Frame Number
• The Micro Start of Frame (MSOF) interrupt with no CRC error.
• The End of Reset (EORST) interrupt
• The Wake-Up (WAKEUP) interrupt
• The End of Resume (EORSM) interrupt
• The Upstream Resume (UPRSM) interrupt
• The Endpoint n (EPnINT) interrupt
• The DMA Channel n (DMAnINT) interrupt
• The Start of Frame (SOF) interrupt with a frame number CRC error (FNCERR is one)
• The Micro Start of Frame (MSOF) interrupt with a CRC error
• The Transmitted IN Data Interrupt (TXINI)
• The Received OUT Data Interrupt (RXOUTI)
• The Received SETUP Interrupt (RXSTPI)
• The Short Packet (SHORTPACKET) interrupt
• The Number of Busy Banks (NBUSYBK) interrupt
• The Received OUT isochronous Multiple Data Interrupt (MDATAI)
• The Received OUT isochronous DataX Interrupt (DATAXI)
• The Underflow Interrupt (UNDERFI)
CRC Error (FNCERR) bit in the Device Frame Number (UDFNUM) register is zero)
Figure 26-6 on page
625.
643