AT90USB646 datasheet(282/456 Pages) ATMEL

282 / 456 page

282

7593L–AVR–09/12

AT90USB64/128

• 4 - NAKOUTI - NAK OUT Received Interrupt flag

Set by hardware when a NAK handshake has been sent in response of a OUT/PING request

from the host. This triggers an USB interrupt if NAKOUTE is sent.

Shall be cleared by software. Setting by software has no effect.

• 3 - RXSTPI - Received SETUP Interrupt flag

Set by hardware to signal that the current bank contains a new valid SETUP packet. An inter-

rupt (EPINTx) is triggered (if enabled).

Shall be cleared by software to handshake the interrupt. Setting by software has no effect.

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

• 2 - RXOUTI / KILLBK - Received OUT Data Interrupt flag

Set by hardware to signal that the current bank contains a new packet. An interrupt (EPINTx) is

triggered (if enabled).

Shall be cleared by software to handshake the interrupt. Setting by software has no effect.

Kill Bank IN bit

Set this bit to kill the last written bank.

Cleared by hardware when the bank is killed. Clearing by software has no effect.

See page 271 for more details on the Abort.

• 1 - STALLEDI - STALLEDI Interrupt flag

Set by hardware to signal that a STALL handshake has been sent, or that a CRC error has been

detected in a OUT isochronous endpoint.

Shall be cleared by software. Setting by software has no effect.

• 0 - TXINI - Transmitter Ready Interrupt flag

Set by hardware to signal that the current bank is free and can be filled. An interrupt (EPINTx) is

triggered (if enabled).

Shall be cleared by software to handshake the interrupt. Setting by software has no effect.

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.

Bit

210

FLERRE

NAKINE

NAKOUTE

RXSTPE

RXOUTE

STALLEDE

TXINE

UEIENX

Read/write

R/W

Initial value

AT90USB646 Datasheet(PDF) 282 Page - ATMEL Corporation

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