Microchip Technology AC244045 Data Sheet

DS41440C-page 294

 2010-2012 Microchip Technology Inc.

The operation of the EUSART module is controlled
through three registers:
• Transmit Status and Control (TXSTA)
• Receive Status and Control (RCSTA)
• Baud Rate Control (BAUDCON)
These registers are detailed in 

,

 and 

, respectively.

When the receiver or transmitter section is not enabled
then the corresponding RX or TX pin may be used for
general purpose input and output.

RX/DT pin

Pin Buffer

and Control

SPEN

Data

Recovery

CREN

OERR

FERR

RSR Register

MSb

LSb

RX9D

RCREG Register

FIFO

Interrupt

RCIF
RCIE

Data Bus

8

Stop

START

(8)

7

1

0

RX9

 • • •

SPBRGL

SPBRGH

BRG16

RCIDL

F

OSC

÷ n

n

+ 1

Multiplier

x4

x16 x64

SYNC

1 X 0 0 0

BRGH

X 1 1 0 0

BRG16

X 1 0 1 0

Baud Rate Generator