AT90USB647 Atmel Corporation, AT90USB647 Datasheet - Page 292

• Manufacturer Part Number: AT90USB647
• Manufacturer: Atmel Corporation

Specifications of AT90USB647

• Flash (kbytes): 64 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 48
• Ext Interrupts: 16
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device + OTG
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 4
• Eeprom (bytes): 2048
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 4
• Output Compare Channels: 10
• Input Capture Channels: 1
• Pwm Channels: 9
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

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Figure 23-3. Pipe activation flow:
Once the Pipe is activated (EPEN set) and, the hardware is ready to send requests to the
Device.
When configured (CFGOK = 1), only the Pipe Token (PTOKEN) and the polling interval for Inter-
rupt pipe can be modified.
A Control type pipe supports only 1 bank. Any other value will lead to a configuration error
(CFGOK = 0).
A clear of PEN will reset the configuration of the Pipe. All the corresponding Pipe registers are
reset to there reset values. Please refers to the Memory Management chapter for more details.
Note: The firmware has to configure the Default Control Pipe with the following parameters:
The firmware asks for 8 bytes of the Device Descriptor sending a GET_DESCRIPTOR request.
These bytes contains the MaxPacketSize of the Device default control endpoint and the firm-
ware re-configures the size of the Default Control Pipe with this size parameter.
• Type: Control
• Token: SETUP
• Data bank: 1
• Size: 64 Bytes
Pipe activ ated
Y es
and f reezed
(interrupt only)
Activ ation
UPCFG0X
UPCFG1X
CFGOK=1
UPCFG2X
PENABLE=1
UPCONX
PEPNUM
CFGMEM
PTOKEN
INT FRQ
PTYPE
Pipe
PSIZE
PBK
Configure the polling interval
for Interrupt pipe
Select the Pipe type:
* Type (Control, Bulk, Interrupt)
* Token (IN, OUT , SET UP)
* Endpoint number
Configure the Pipe memory:
* Pipe size
* Number of banks
No
Enable the pipe
ERROR
7593K–AVR–11/09