Datasheet

222

7799D–AVR–11/10

ATmega8U2/16U2/32U2

This register contains the number of received byte into the current bank of the selected end-

point. The content of this register is decremented after each write access to the endpoint data

21.18.19 UEINT – USB Endpoint Number interrupt Register

• Bits 7:5 – Res: Reserved

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

• Bits 4:0 – EPINT[4:0]: Endpoint Interrupts Bits

These flags are updated by the USB controller when a USB endpoint interrupt occurs (at least

one bit in UEINTX set). Each bit in this field indicates which endpoint number has generated a

USB endpoint interrupt request. Each one of these bits are independently cleared by hardware

when their respective interrupt source is served.

Bit 76543210

(0xF4) - - - EPINT4:0 UEINT

Read/Write R R R R R R R R R

Initial Value 0 0 0 0 0 0 0 0