29.1.2.3 Receive Interrupts

The RCxIF interrupt flag bit of the PIR3 register is set whenever the EUSART receiver is enabled and there is an unread character in the receive FIFO. The RCxIF interrupt flag bit is read-only, it cannot be set or cleared by software.

RCxIF interrupts are enabled by setting all of the following bits:

• RCxIE, Interrupt Enable bit of the PIE3 register
• PEIE, Peripheral Interrupt Enable bit of the INTCON register
• GIE, Global Interrupt Enable bit of the INTCON register

The RCxIF interrupt flag bit will be set when there is an unread character in the FIFO, regardless of the state of interrupt enable bits.