CS48L32-CNZR audio processor on mobile boards

Hello repair community,

I was checking component suppliers and came across an IC called CS48L32-CNZR, which appears to be an audio processor / codec. I’m curious because I'm working on a phone/audio device repair project where the audio subsystem is acting strange (no output, distortion, etc.), and I suspect this chip might be part of the problem.

The device I’m repairing is a smartphone or a Bluetooth audio board (I’m not 100% sure). No audio output, or crackling / distortion when the audio should play. I can’t yet confirm that the CS48L32 is faulty, but it’s one of the components on the audio circuit.

Has anyone ever seen or replaced the CS48L32 (or a similar audio processor) on mobile devices? What were the challenges? How do you test whether an audio codec / processor is working properly? Do you use signal injection, reference signal tracing, or measure certain pins (e.g. clock, I²S lines)?

If I were to replace this chip (if confirmed bad), what are best practices?

If you have experience with diagnosing audio path faults in phones or embedded boards, I’d appreciate any pointers. Thanks in advance for any help or shared knowledge!

-Jordan