Microchip Technology MA330031-2 Data Sheet

DS70000657H-page 180

 2011-2013 Microchip Technology Inc.

11.4.4.2

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 6-bit fields, with each set associated with one RPn
pin (see 

 through 

). The

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

 and 

).

A null output is associated with the output register
Reset value of ‘0’. This is done to ensure that remap-
pable outputs remain disconnected from all output pins
by default.

11.4.4.3

Mapping Limitations

The control schema of the peripheral select pins is not lim-
ited to a small range of fixed peripheral configurations.
There are no mutual or hardware-enforced lockouts
between any of the peripheral mapping SFRs. Literally
any combination of peripheral mappings across any or all
of the RPn pins is possible. This includes both many-to-
one and one-to-many mappings of peripheral inputs and
outputs to pins. While such mappings may be technically
possible from a configuration point of view, they may not
be supportable from an electrical point of view.

RPxR<5:0>

0

49

1

Default

U1TX Output

SDO2 Output

2

REFCLKO Output

48

QEI1CCMP Output

Output Data

RPn

Default PORT

000000

RPn tied to Default Pin

U1TX

000001

RPn tied to UART1 Transmit

U2TX

000011

RPn tied to UART2 Transmit

SDO2

001000

RPn tied to SPI2 Data Output

SCK2

001001

RPn tied to SPI2 Clock Output

SS2

001010

RPn tied to SPI2 Slave Select

C1TX

001110

RPn tied to CAN1 Transmit

OC1

010000

RPn tied to Output Compare 1 Output

OC2

010001

RPn tied to Output Compare 2 Output

OC3

010010

RPn tied to Output Compare 3 Output

OC4

010011

RPn tied to Output Compare 4 Output

C1OUT

011000

RPn tied to Comparator Output 1

C2OUT

011001

RPn tied to Comparator Output 2

C3OUT

011010

RPn tied to Comparator Output 3

SYNCO1

101101

RPn tied to PWM Primary Time Base Sync Output

QEI1CCMP

101111

RPn tied to QEI 1 Counter Comparator Output 

REFCLKO

110001

RPn tied to Reference Clock Output

C4OUT

110010

RPn tied to Comparator Output 4

This function is available in dsPIC33EPXXXMC20X/50X and PIC24EPXXXMC20X devices only.

This function is available in dsPIC33EPXXXGP/MC50X devices only.