topic Re: MPC5775B to MC33665 to MC33771C in MPC5xxx

MPC5775B to MC33665 to MC33771C

MarkFan — Tue, 19 Dec 2023 08:28:19 GMT

Hi,

We use MPC5775 to connect FRDM665SPIEVB and TPL port 0 to MC33771C.

I can read/write MC33665A internal register and config port 0 to TPL2, however, I cannot wakeup MC33771C via MC33665A . Previously, we use MC33774 INTB pin to wakeup MC33771C.

Don't how to wakeup MC33771C via MC33665A? Thanks for any help.

BTW, it seems no write response reply after I send message from MC33665 to MC33771? am I right?

Thanks.

Re: MPC5775B to MC33665 to MC33771C

guoweisun — Thu, 21 Dec 2023 05:23:08 GMT

For the TPL wakeup please see MC33771C datasheet page 60---》10.2.6 Transformer communication wake-up

Re: MPC5775B to MC33665 to MC33771C

MarkFan — Thu, 21 Dec 2023 05:28:07 GMT

Hi guoweisun,

Thanks for your reply.

After I trace S32K344 example TPL bring up project , I found the answer.

Mark

在我追蹤 S32K344 範例 TPL 啟動專案後，我找到了答案。

Re: MPC5775B to MC33665 to MC33771C

Shivanand — Wed, 13 Aug 2025 11:40:06 GMT

Hello @MarkFan,

I'm also trying to communicate MC33771c with MC33665a to Tpl Port 2 using the S32K358 controller. Do you have any example or reference projects to help me?

Re: MPC5775B to MC33665 to MC33771C

MarkFan — Wed, 13 Aug 2025 23:41:27 GMT

Hi Shivanand,

If your platform is the S32K358, you can refer to NXP's BMS-related projects for the S32K358.

Communication with the BJB board uses the MC33772C, which is TPL2.

I hope this helps.

Best regards,

Mark