DSPIC33FJ12MC02ESS datasheet(111/284 Pages) MICROCHIP

111 / 284 page

Preliminary

DS70265B-page 109

dsPIC33FJ12MC201/202

9.4.3.2

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 9-14 through Register 9-21). 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 9-2 and Figure 9-3).

The list of peripherals for output mapping also includes

a null value of 00000

because of the mapping

technique. This permits any given pin to remain

unconnected from the output of any of the pin

selectable peripherals.

FIGURE 9-3:

MULTIPLEXING OF REMAPPABLE OUTPUT FOR RPn

TABLE 9-2:

OUTPUT SELECTION FOR REMAPPABLE PIN (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

RPnR<4:0>

default

U1TX Output enable

U1RTS Output enable 4

UPDN Output enable

OC2 Output enable

default

U1TX Output

U1RTS Output 4

UPDN Output

OC2 Output

Output enable

Output Data

RPn

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