Microchip Technology DM330023-2 Data Sheet

© 2007-2012 Microchip Technology Inc.

DS70283K-page 121

10.6.2.2

Output Mapping

In contrast to inputs, the outputs of the peripheral pin
select options are mapped on the basis of the pin. In
this case, a control register associated with a particular
pin dictates the peripheral output to be mapped. The
RPORx registers are used to control output mapping.
Like the RPINRx registers, each register contains sets
of 5-bit fields, with each set associated with one RPn
pin (see 

 through 

value of the bit field corresponds to one of the periph-
erals, and that peripheral’s output is mapped to the pin
(see 

 and 

). 

The list of peripherals for output mapping also includes
a null value of 00000  because of the mapping tech-
nique. This permits any given pin to remain uncon-
nected from the output of any of the pin selectable
peripherals.

0

26

3

RPnR<4:0>

Default

U1TX Output Enable

U1RTS Output Enable 4

UPDN Output Enable

19

OC2 Output Enable

0

26

3

Default

U1TX Output

U1RTS Output 4

UPDN Output

19

OC2 Output

Output Enable

Output Data

RPn

NULL

00000

RPn tied to default port pin

U1TX

00011

RPn tied to UART1 Transmit

U1RTS

00100

RPn tied to UART1 Ready To Send

SDO1

00111

RPn tied to SPI1 Data Output

SCK1OUT

01000

RPn tied to SPI1 Clock Output

SS1OUT

01001

RPn tied to SPI1 Slave Select Output

OC1

10010

RPn tied to Output Compare 1

OC2

10011

RPn tied to Output Compare 2

UPDN

11010

RPn tied to QEI direction (UPDN) status