AT90USB646 datasheet(297/456 Pages) ATMEL

297 / 456 page

297

7593L–AVR–09/12

AT90USB64/128

• 5 - INMODE - IN Request mode

Set this bit to allow the USB controller to perform infinite IN requests when the Pipe is not frozen.

Clear this bit to perform a pre-defined number of IN requests. This number is stored in the UIN-

RQX register.

• 4 - Reserved

The value read from this bit is always 0. Do not set this bit.

• 3 - RSTDT - Reset Data Toggle

Set this bit to reset the Data Toggle to its initial value for the current Pipe.

Cleared by hardware when proceed. Clearing by software has no effect.

• 2 - Reserved

The value read from these bits is always 0. Do not set these bits.

• 1 - Reserved

The value read from these bits is always 0. Do not set these bits.

• 0 - PEN - Pipe Enable

Set to enable the Pipe.

Clear to disable and set the pipe.

• 7-6 - PTYPE1:0 - Pipe Type

Select the type of the Pipe:

- 00: Control

- 01: Isochronous

- 10: Bulk

- 11: Interrupt

• 5-4 - PTOKEN1:0 - Pipe Token

Select the Token to associate to the Pipe

- 00: SETUP

- 01: IN

- 10: OUT

- 11: reserved

• 3-0 - PEPNUM3:0 - Pipe Endpoint Number

Set this field according to the Pipe configuration. Set the number of the Endpoint targeted by the

Pipe. This value is from 0 and 15.

Bit

543210

PTYPE1

PTYPE0

PTOKEN1 PTOKEN0 PEPNUM3 PEPNUM2 PEPNUM1 PEPNUM0 UPCFG0X

Read/write

Initial value

000000

AT90USB646 Datasheet(PDF) 297 Page - ATMEL Corporation

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