Other Parts Discussed in Thread: TPS3704-Q1,
Hi Experts,
We have this report from a known customer, for your assistance:
I have attached the simple block diagram of the interfaces. We are merging both reset inputs from supervision circuit and can sbc, further it is connected to microcontroller reset.
If we get reset low from supervision circuit, nrst(bidirectional) of can sbc also get low because of its interconnection. If we connect in such a way, due to low reset complete can sbc will move to sleep mode(TXD and RXD will be maintained low). Data transaction through can bus got stopped. Which will disable the enable signal to voltage regulator block. Which leads the complete unit to get disabled.
To avoid that, what kind of circuits we can add in between both reset signals?
Based on it, we can stop signal input to nrst pin which disables the can bus transaction. Which can used for retry options
For our case, we planned to use nrst signal from can sbc as an output alone. Bidirectional operation not required.
Give your suggestions by adding which block we can avoid the reverse flow to can sbc.
Regards,
Archie A.
