Datasheet

© 2007-2012 Microchip Technology Inc. DS70283K-page 121
dsPIC33FJ32MC202/204 and dsPIC33FJ16MC304
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 Register 10-14 through Register 10-26). The
value of the bit field corresponds to one of the periph-
erals, and that peripheral’s output is mapped to the pin
(see Table 10-2 and Figure 10-3).
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.
FIGURE 10-3: MULTIPLEXING OF
REMAPPABLE OUTPUT
FOR RPn
TABLE 10-2: OUTPUT SELECTION FOR REMAPPABLE PIN (RPn)
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
Function RPnR<4:0> Output Name
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