Microchip Technology AC244045 Data Sheet

DS41341E-page 146

© 2009 Microchip Technology Inc.

The operation of the AUSART module is controlled
through two registers:

• Transmit Status and Control (TXSTA)

• Receive Status and Control (RCSTA)

These registers are detailed in Register 16-1 and
Register 16-2, respectively.

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

8

Stop

START

(8)

7

1

0

RX9

 • • •

SPBRG

F

OSC

÷ n

n

+ 1

Multiplier

x4

x16

x64

SYNC

1

0

0

BRGH

x

1

0

Baud Rate Generator