Microchip Technology IC PIC MCU PIC16F1937-I/PT TQFP-44 MCP PIC16F1937-I/PT Data Sheet

DS41364E-page 292

 2008-2011 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