ATmega16U4 datasheet(288/408 Pages) ATMEL

288 / 408 page

288

7766D–AVR–01/09

ATmega16U4/ATmega32U4

This bit is inactive (cleared) if the endpoint is an OUT endpoint.

• 7 - FLERRE - Flow Error Interrupt Enable Flag

Set to enable an endpoint interrupt (EPINTx) when OVERFI or UNDERFI are sent.

Clear to disable an endpoint interrupt (EPINTx) when OVERFI or UNDERFI are sent.

• 6 - NAKINE - NAK IN Interrupt Enable Bit

Set to enable an endpoint interrupt (EPINTx) when NAKINI is set.

Clear to disable an endpoint interrupt (EPINTx) when NAKINI is set.

• 5 - Reserved

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

• 4 - NAKOUTE - NAK OUT Interrupt Enable Bit

Set to enable an endpoint interrupt (EPINTx) when NAKOUTI is set.

Clear to disable an endpoint interrupt (EPINTx) when NAKOUTI is set.

• 3 - RXSTPE - Received SETUP Interrupt Enable Flag

Set to enable an endpoint interrupt (EPINTx) when RXSTPI is sent.

Clear to disable an endpoint interrupt (EPINTx) when RXSTPI is sent.

• 2 - RXOUTE - Received OUT Data Interrupt Enable Flag

Set to enable an endpoint interrupt (EPINTx) when RXOUTI is sent.

Clear to disable an endpoint interrupt (EPINTx) when RXOUTI is sent.

• 1 - STALLEDE - Stalled Interrupt Enable Flag

Set to enable an endpoint interrupt (EPINTx) when STALLEDI is sent.

Clear to disable an endpoint interrupt (EPINTx) when STALLEDI is sent.

• 0 - TXINE - Transmitter Ready Interrupt Enable Flag

Set to enable an endpoint interrupt (EPINTx) when TXINI is sent.

Clear to disable an endpoint interrupt (EPINTx) when TXINI is sent.

Bit

210

FLERRE

NAKINE

NAKOUTE

RXSTPE

RXOUTE

STALLEDE

TXINE

UEIENX

Read/Write

R/W

Initial Value

Bit

6543

210

DAT D7

DAT D6

DAT D5

DAT D4

DAT D3

DAT D2

DAT D1

DAT D0

UEDATX

Read/Write

R/W

Initial Value

0000

000

ATmega16U4 Datasheet(PDF) 288 Page - ATMEL Corporation

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