MCP19116 datasheet(72/246 Pages) MICROCHIP

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MCP19116/7

DS20005479D-page 72

 2015-2020 Microchip Technology Inc.

When setting up an Asynchronous Reception, follow

these steps:

Initialize the SPBRG register for the appropriate

baud rate. If a high speed baud rate is desired,

set bit BRGH.

Enable the asynchronous serial port by clearing

bit SYNC and setting bit SPEN.

If interrupts are desired, then set enable bit

RCIE.

If 9-bit reception is desired, then set bit RX9.

Set ADDEN if address detect is needed.

Enable the reception by setting bit CREN.

Flag bit RCIF will be set when reception is com-

plete and an interrupt will be generated if enable

bit RCIE is set.

Read the RCSTA register to get the ninth bit (if

enabled) and determine if any error occurred

during reception.

Read the 8-bit received data by reading the

RCREG register.

10. If any error occurred, clear the error by clearing

enable bit CREN.

11. If using interrupts, set GIE (INTCON<7>) and

PEIE (INTCON<6>) bits.

FIGURE 10-4:

USART RECEIVE BLOCK DIAGRAM

Baud Rate CLK

SPBRG

Baud Rate Generator

RC7/RX/DT

Pin Buffer

and Control

SPEN

Data

Recovery

CREN

OERR

FERR

RSR register

MSb

LSb

RX9D

RCREG register

FIFO

Interrupt

RCIF

RCIE

Data Bus

x 64

x 16

Stop

Start

(8)

RX9

ADDEN

RX9

ADDEN

RSR<8>

Enable

Load of

Receive

Buffer

RCREG register

RX9D

x 4

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