PIC24FJ128GA310 datasheet(175/406 Pages) MICROCHIP

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 2010-2011 Microchip Technology Inc.

DS39996F-page 175

PIC24FJ128GA310 FAMILY

11.4.3.2

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.

Each register contains two 6-bit fields, with each field

being associated with one RPn pin (see Register 11-27

through Register 11-42). The value of the bit field

corresponds to one of the peripherals and that

peripheral’s output is mapped to the pin (see

Table 11-4).

Because of the mapping technique, the list of peripher-

als for output mapping also includes a null value of

‘000000’. This permits any given pin to remain discon-

nected from the output of any of the pin-selectable

peripherals.

TABLE 11-4:

SELECTABLE OUTPUT SOURCES (MAPS FUNCTION TO OUTPUT)

Output Function Number(1)

Function

Output Name

NULL(2)

Null

C1OUT

Comparator 1 Output

C2OUT

Comparator 2 Output

U1TX

UART1 Transmit

4U1RTS(3)

UART1 Request To Send

U2TX

UART2 Transmit

6U2RTS(3)

UART2 Request To Send

SDO1

SPI1 Data Output

SCK1OUT

SPI1 Clock Output

SS1OUT

SPI1 Slave Select Output

SDO2

SPI2 Data Output

SCK2OUT

SPI2 Clock Output

SS2OUT

SPI2 Slave Select Output

OC1

Output Compare 1

OC2

Output Compare 2

OC3

Output Compare 3

OC4

Output Compare 4

OC5

Output Compare 5

OC6

Output Compare 6

OC7

Output Compare 7

U3TX

UART3 Transmit

U3RTS(3)

UART3 Request To Send

U4TX

UART4 Transmit

U4RTS(3)

UART4 Request To Send

C3OUT

Comparator 3 Output

MDOUT

DSM Modulator Output

38-63

(unused)

Note 1:

Setting the RPORx register with the listed value assigns that output function to the associated RPn pin.

The NULL function is assigned to all RPn outputs at device Reset and disables the RPn output function.

IrDA® BCLK functionality uses this output.

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