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[FAQ] TDA4VM: TDA4VM: Questions about UDMAP module register access restrictions

Part Number: TDA4VM


My customer has some issues with TDA4VM UDMAP. Could you please help with it? Thank you very much!
    I'm reading the chip manual for TDA4VM (SPRUIL1B.pdf) and have some doubts about the content of the description of the UDMAP register:
    Taking the UDMASS_UDMAP0_CFG_TCHANRT register as an example, the description in the manual is as follows:

    But in the chip manual I didn't find a description about the cdma_cfg_resl signal.

I noticed the description was due to my attempt to read the register, which resulted in a kernel panic.
What should I do ahead of time in the code if I want to access this register?

Looking forward to your reply.
Best Regards