AT90USB646 datasheet(298/456 Pages) ATMEL

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298

7593L–AVR–09/12

AT90USB64/128

• 7 - Reserved

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

• 6-4 - PSIZE2:0 - Pipe Size

Select the size of the Pipe:

- 000: 8

- 100: 128 (only for endpoint 1)

- 001: 16

- 101: 256 (only for endpoint 1)

- 010: 32

- 110: Reserved. Do not use this configuration.

- 011: 64

- 111: Reserved. Do not use this configuration.

• 3-2 - PBK1:0 - Pipe Bank

Select the number of bank to declare for the current Pipe.

- 00: 1 bank

- 01: 2 banks

- 10: invalid

- 11: invalid

• ALLOC - Configure Pipe Memory

Set to configure the pipe memory with the characteristics.

Clear to update the memory allocation. Refer to the Memory Management chapter for more

details.

7 - Reserved

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

• 7 - INTFRQ7:0 - Interrupt Pipe Request Frequency

These bits are the maximum value in millisecond of the polling period for an Interrupt Pipe.

This value has no effect for a non-Interrupt Pipe.

Bit

PSIZE2:0

PBK1:0

ALLOC

UPCFG1X

Read/write

Initial value

Bit

65432

INTFRQ7

INTFRQ6

INTFRQ5

INTFRQ4

INTFRQ3

INTFRQ2

INTFRQ1

INTFRQ0

UPCFG2X

Read/write

Initial value

00000

AT90USB646 Datasheet(PDF) 298 Page - ATMEL Corporation

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