PIC18F-LF1XK50 Datasheet, PDF (182/420 Pages) Microchip Technology – 20-Pin USB Flash Microcontrollers

PIC18F/LF1XK50
FIGURE 16-2:
EUSART RECEIVE BLOCK DIAGRAM
SPEN
CREN
OERR
RCIDL
RX/DT pin
Pin Buffer
and Control
Data
Recovery
Baud Rate Generator
BRG16
+1
SPBRGH SPBRG
FOSC
÷n
Multiplier x4 x16 x64 ⁿ
SYNC 1 X 0 0 0
BRGH X 1 1 0 0
BRG16 X 1 0 1 0
The operation of the EUSART module is controlled
through three registers:
• Transmit Status and Control (TXSTA)
• Receive Status and Control (RCSTA)
• Baud Rate Control (BAUDCTL)
These registers are detailed in Register 16-1,
Register 16-2 and Register 16-3, respectively.
For all modes of EUSART operation, the TRIS control
bits corresponding to the RX/DT and TX/CK pins should
be set to ‘1’. The EUSART control will automatically
reconfigure the pin from input to output, as needed.
MSb
Stop (8)
RSR Register
7 ••• 1
LSb
0 START
RX9
FERR
RX9D
RCREG Register
FIFO
8
Data Bus
RCIF
RCIE
Interrupt
DS41350E-page 182
Preliminary
 2010 Microchip Technology Inc.