PIC24FJ256GB110-I Datasheet, PDF(127/328 Page) Microchip Technology – 64/80/100-Pin, 16-Bit Flash Microcontrollers with USB On-The-Go (OTG)

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PIC24FJ256GB110-I Datasheet, PDF (127/328 Pages) Microchip Technology – 64/80/100-Pin, 16-Bit Flash Microcontrollers with USB On-The-Go (OTG)

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PIC24FJ256GB110 FAMILY

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.

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

being associated with one RPn pin (see Register 9-22

through Register 9-37). The value of the bit field

corresponds to one of the peripherals and that

peripheralâs output is mapped to the pin (see

Table 9-2).

Because of the mapping technique, the list of peripher-

als for output mapping also includes a null value of

â000000â. This permits any given pin to remain discon-

nected from the output of any of the pin selectable

peripherals.

TABLE 9-2: SELECTABLE OUTPUT SOURCES (MAPS FUNCTION TO OUTPUT)

Output Function Number(1)

Function

Output Name

0

NULL(2)

Null

1

C1OUT

Comparator 1 Output

2

C2OUT

Comparator 2 Output

3

U1TX

UART1 Transmit

4

U1RTS(3)

UART1 Request To Send

5

U2TX

UART2 Transmit

6

U2RTS(3)

UART2 Request To Send

7

SDO1

SPI1 Data Output

8

SCK1OUT

SPI1 Clock Output

9

SS1OUT

SPI1 Slave Select Output

10

SDO2

SPI2 Data Output

11

SCK2OUT

SPI2 Clock Output

12

SS2OUT

SPI2 Slave Select Output

18

OC1

Output Compare 1

19

OC2

Output Compare 2

20

OC3

Output Compare 3

21

OC4

Output Compare 4

22

OC5

Output Compare 5

23

OC6

Output Compare 6

24

OC7

Output Compare 7

25

OC8

Output Compare 8

28

U3TX

UART3 Transmit

29

U3RTS(3)

UART3 Request To Send

30

U4TX

UART4 Transmit

31

U4RTS(3)

UART4 Request To Send

32

SDO3

SPI3 Data Output

33

SCK3OUT

SPI3 Clock Output

34

SS3OUT

SPI3 Slave Select Output

35

OC9

Output Compare 9

37-63

(unused)

NC

Note 1: Setting the RPORx register with the listed value assigns that output function to the associated RPn pin.

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

3: IrDAÂ® BCLK functionality uses this output.

Â© 2008 Microchip Technology Inc.

Preliminary

DS39897B-page 125

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