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Serial Communications Interface (SCI) Signals

56F805 Technical Data, Rev. 16

Freescale Semiconductor

2.10 Serial Communications Interface (SCI) Signals

2.11 CAN Signals

Table 2-14 Serial Communications Interface (SCI0 and SCI1) Signals

No. of

Pins

Signal

Name

Signal

Type

State During

Reset

Signal Description

TXD0

GPIOE0

Output

Input/Output

Input

Transmit Data (TXD0)—SCI0 transmit data output

Port E GPIO—This pin is a General Purpose I/O (GPIO) pin that

can individually be programmed as input or output pin.

After reset, the default state is SCI output.

RXD0

GPIOE1

Input

Input/Output

Input

Receive Data (RXD0)— SCI0 receive data input

Port E GPIO—This pin is a General Purpose I/O (GPIO) pin that

can individually be programmed as input or output pin.

After reset, the default state is SCI input.

TXD1

GPIOD6

Output

Input/Output

Input

Transmit Data (TXD1)—SCI1 transmit data output

Port D GPIO—This pin is a General Purpose I/O (GPIO) pin that

can individually be programmed as an input or output pin.

After reset, the default state is SCI output.

RXD1

GPIOD7

Input

Input/Output

Input

Receive Data (RXD1)—SCI1 receive data input

Port D GPIO—This pin is a General Purpose I/O (GPIO) pin that

can individually be programmed as an input or output pin.

After reset, the default state is SCI input.

Table 2-15 CAN Module Signals

No. of

Pins

Signal

Name

Signal

Type

State During

Reset

Signal Description

MSCAN_ RX

Input

(Schmitt)

Input

MSCAN Receive Data—This is the MSCAN input. This pin has

an internal pull-up resistor.

MSCAN_ TX

Output

MSCAN Transmit Data—MSCAN output. CAN output is

open-drain output and a pull-up resistor is needed.

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