Cx31993 Datasheet Fix Better ((link)) Jun 2026

A common issue with this chip is audible popping or static when the system suspends the codec to save power.

| Issue | Description | |-------|-------------| | | No public datasheet details the I²C/HID registers for advanced features (e.g., gain control, filter settings, LED control). | | Incorrect Pinout Diagrams | Several community copies show contradictory pin functions for pins 9, 10, and 11 (e.g., VDDIO vs. GPIO). | | Undocumented Modes | Behavior in "firmware-less" vs. "EEPROM configuration" mode is not clearly defined. | | Electrical Typos | Some sources list VDD as 3.3V max, others 5V – critical for design safety. | | Missing Timing Diagrams | No reset timing or I²S slave mode timing constraints are available. | cx31993 datasheet fix better