MCU SPI Configuration (MC3364)

[Patrick_Pavle]

Dear Community,

In MC33771x/MC33772x transformer and wire guide on the TPL network (nxp.com) and Isolated network high-speed transceiver (nxp.com) you see different application circuit.

In one there are 2 times MOSI and in the other MOSI and MISO are used. How is it correct?

How are SCLK_RX, CSB_RX and DATA_RX configured?

Is SCLK_RX -> "Slave SPI clock inputs" or "Master SPI clock output"?
Is CSB_RX -> "Slave select input" or "Master slave select output"? 

best regards,

Patrick

[PetrS]

Hi,

it should be MOSI for both SPIs. SCLK_RX, CSB_RX and DATA_RX are signals generated by MC33664, thus pins on MCU should be inputs and SPI configured as slave.

BR, Petr

[Patrick_Pavle]

Hello @PetrS,

do you have any data sheets on where this can be found?

best regards,

Patrick 

[PetrS]

Hi,

how SCLK_RX, CSB_RX and DATA_RX signals are generated will be explained within MC33664 datasheet and associated App notes. The usage of SPI on MCU side depends on MCU selected and its datasheet/Reference manual will explain this.

BR, Petr