How to determine the correct IGF module for WKUP_CH10 on MPC5746C

[NileshDharap]

Hello,
I’m working on the MPC5746C controller and need to enable the Input Glitch Filter (IGF) for Wakeup Channel 10 by setting the FGEN bit. However, since the device has 4 IGF modules, I’m unable to determine which IGF module corresponds to WKUP_CH10. I couldn't find a clear mapping in the reference manual

Could someone please help me identify which IGF module should be configured for WKUP_CH10?

Thank you in advance!

[NileshDharap]

Hey David,

I was thinking IGF will be handling WKPU as well.
Thanks for the information.

Regards,
Nilesh Dharap

[davidtosenovjan · Accepted solution]

IGF is being selected according attached I/O excel:

However this is not anyhow related to WKPU module. It has its own glithc filter being enabled by

having following filtering behavior

[NileshDharap]

Can you pls confirm that the implementation suggested above by enabling the register WKPU_WIFER on corresponding interrupt will meet the intention of requirement from safety manual i.e. Chapter 5.2.27 Glitch filter?

[davidtosenovjan]

Chapter '5.2.27 Glitch filter' only mentions the presence of glitch filters there, it does not say anything else and they can be used.