AT90USB1286-16MU ATMEL [ATMEL Corporation], AT90USB1286-16MU Datasheet - Page 260

• Manufacturer Part Number: AT90USB1286-16MU
• Description: Microcontroller with 64/128K Bytes of ISP Flash and USB Controller
• Manufacturer: ATMEL [ATMEL Corporation]

21.10 OTG timers customizing
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AT90USB64/128
Figure 21-15. Pad behaviour
The SUSPI flag indicated that a suspend state has been detected on the USB bus. This flag
automatically put the USB pad in Idle. The detection of a non-idle event sets the WAKEUPI flag
and wakes-up the USB pad.
Moreover, the pad can also be put in the “idle” mode if the DETACH bit is set. It come back in
the active mode when the DETACH bit is cleared.
It is possible to refine some OTG timers thanks to the OTGTCON and OTGCON registers
• PAGE=00b: AWaitVrise time-out. [OTG] chapter 6.6.5.1
• VALUE=00bTime-out is set to 20 ms
• VALUE=01bTime-out is set to 50 ms
• VALUE=10bTime-out is set to 70ms
• VALUE=11bTime-out is set to 100 ms
• PAGE=01b: VbBusPulsing. [OTG] chapter 5.3.4
• VALUE=00bTime-out is set to 15 ms
SUSPI
WAKEUPI
PAD status
Active
Suspend detected = USB pad power down
Idle mode
Resume = USB pad wake-up
| DETACH=1
| suspend
USBE=0
Power Down
& DETACH=0
& suspend
USBE=1
Clear Suspend by software
Clear Resume by software
Active mode
Active
7593A–AVR–02/06