Freescale Semiconductor MPC5553

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MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5

2-46 Freescale Semiconductor

2.3.7 eSCI Signals

2.3.7.1 eSCI A Transmit / GPIO

TXDA_GPIO[89]

TXDA_GPIO[89] has a primary signal function of eSCI A transmit for the eSCI A module. This pin can

also be used as a GPIO signal.

2.3.7.2 eSCI A Receive / GPIO

RXDA_GPIO[90]

RXDA_GPIO[90] has a primary signal function of eSCI A receive for the eSCI A module. The pin

functions as input only for the RXD function, but as the GPIO function the pin is input or output based on

the SIU_PCR register configuration.

2.3.7.3 eSCI B Transmit / DSPI D Chip Select / GPIO

TXDB_PCSD[1]_GPIO[91]

TXDB_PCSD[1]_GPIO[91] has a primary signal function of eSCI A transmit for the eSCI B module. The

alternate function is a peripheral chip select output for the DSPI D module. This pin can also be used as a

GPIO signal.

2.3.7.4 eSCI B Receive / DSPI D Chip Select / GPIO

RXDB_PCSD[5]_GPIO[92]

RXDB_PCSD[5]_GPIO[92] has a primary signal function of eSCI B receive for the eSCI B module. The

secondary function is a peripheral chip select for the DSPI D module. This pin can also be used as a GPIO

signal.

2.3.8 DSPI Signals

Only the MPC5554 has the DSPI A module. Therefore, all muxed DSPI A signal functions are not

available on the MPC5553 device.

2.3.8.1 DSPI A Clock / DSPI C Chip Select 1 / GPIO

SCKA_PCSC[1]_GPIO[93]

SCKA_PCSC[1]_GPIO[93] has a primary signal function of the DSPI clock SCKA for the DSPI A

module and is only available on the MPC5554. Because the MPC5553 does not have a DSPI A module,

the primary signal function SCKA is not available on the MPC5553. The peripheral chip select PCSC[1]

for the DSPI C module is the alternate signal function. This pin can also be used as a GPIO signal.

2.3.8.2 DSPI A Data Input / DSPI C Chip Select 2 / GPIO

SINA_PCSC[2]_GPIO[94]

SINA_PCSC[2]_GPIO[94] has a primary signal function of SPI data input SINA for the DSPI A module

and is only available on the MPC5554. Because the MPC5553 does not have a DSPI A module, the

primary signal function SINA is not available on the MPC5553. The peripheral chip select PCSC[2] for

the DSPI C module is the alternate signal function. This pin can also be used as a GPIO signal.

Freescale Semiconductor MPC5553 - Esci Signals