PIC32MX320F032H_11 Datasheet, PDF (117/214 Pages) Microchip Technology – High-Performance, General Purpose and USB, 32-bit Flash Microcontrollers

PIC32MX3XX/4XX
FIGURE 19-4:
UART RECEPTION
UxRX
Start
bit bit 0 bit1
UxRXIF
(RXISEL = 0x)
RIDLE bit
Start
bit 7 Stop bit bit 0
bit
Character 1
to UxRXREG
bit 7 Stop
bit
Character 2
to UxRXREG
Note: This timing diagram shows 2 characters received on the UxRX input.
FIGURE 19-5:
UART RECEPTION WITH RECEIVE OVERRUN
UxRX
OERR bit
Character 1
Start
bit _{bit 0 bit 1}
Characters 2, 3, 4, 5
Character 6
Start
bit 7/8 Stop bit bit 0
bit
Character 1, 2, 3, 4
Stored in Receive
FIFO
Start
bit 7/8 Stop ^bit
bit
bit 7/8 Stop
bit
Character 5
Held in UxRSR
OERR Cleared by User
RIDLE bit
Note: This diagram shows 6 characters received without the user reading the input buffer. The 5th character
received is held in the Receive Shift register. An overrun error occurs at the start of the 6th character.
© 2011 Microchip Technology Inc.
DS61143H-page 117