How to communicate with MC33771C with FRDM33664BEVB?

[KCYang]

Hi, 

I was working on single MC33771C TPL version with FRDM33664BEVB, I cannot wake up the MC33771C and get any response with MC33771C, here is my procedure performed by MCU:

CSB(0);

wait(20us);

CSB(1);

wait(600us);

CSB(0);

wait(20us);

CSB(1);

wait(1000us);

global_write(SYS_CFG1, SW_RESET);

write(CID_0, INIT, CID_1);

read(CID_1, INIT);

I got all signals on oscilloscope except for the response from MC33771C and the wave form generated by FRDM33664BEVB is sinusoidal, not square wave.

Is there something wrong with my procedure or it is just won't work with this wave form?

Best Regards.#

[guoweisun]

You can try to download the software code example for reference:

BCC SW Driver Package for MC33771C and MC33772C(Lite Version) (nxp.com)