AT90USB1286-16MU ATMEL [ATMEL Corporation], AT90USB1286-16MU Datasheet - Page 295
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AT90USB1286-16MU
Manufacturer Part Number
AT90USB1286-16MU
Description
Microcontroller with 64/128K Bytes of ISP Flash and USB Controller
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT90USB1286-16MU.pdf
(434 pages)
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7593A–AVR–02/06
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
AT90USB64/128
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