Microchip Technology DM160214 Data Sheet
PIC16(L)F1946/47
DS41414D-page 298
2010-2012 Microchip Technology Inc.
FIGURE 25-2:
EUSART RECEIVE BLOCK DIAGRAM
The operation of the EUSART module is controlled
through three registers:
• Transmit Status and Control (TXxSTA)
• Receive Status and Control (RCxSTA)
• Baud Rate Control (BAUDxCON)
These registers are detailed in
through three registers:
• Transmit Status and Control (TXxSTA)
• Receive Status and Control (RCxSTA)
• Baud Rate Control (BAUDxCON)
These registers are detailed in
,
and
, respectively.
For all modes of EUSART operation, the TRIS control
bits corresponding to the RXx/DTx and TXx/CKx pins
should be set to ‘1’. The EUSART control will
automatically reconfigure the pin from input to output, as
needed.
When the receiver or transmitter section is not enabled
then the corresponding RXx/DTx or TXx/CKx pin may be
used for general purpose input and output.
bits corresponding to the RXx/DTx and TXx/CKx pins
should be set to ‘1’. The EUSART control will
automatically reconfigure the pin from input to output, as
needed.
When the receiver or transmitter section is not enabled
then the corresponding RXx/DTx or TXx/CKx pin may be
used for general purpose input and output.
RXx/DTx pin
Pin Buffer
and Control
Data
Recovery
CREN
OERR
FERR
RSR Register
MSb
LSb
RX9D
RCxREG Register
FIFO
Interrupt
RCxIF
RCxIE
RCxIE
Data Bus
8
Stop
START
(8)
7
1
0
RX9
• • •
SPxBRGL
SPxBRGH
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