Cx31993 Datasheet Updated Jun 2026

She was a "Sonic Archaeologist," a title she’d made up to justify spending her life digging through the digital remains of the 21st century. Her latest find was a small, silver-braided cable—a relic of an era when humans still used physical wires to pump sound directly into their skulls. At its heart sat the Conexant CX31993, a tiny piece of silicon that promised high-resolution salvation in a world of compressed static.

The CX31993 is typically packaged in a space-saving QFN (Quad Flat No-leads) package to fit inside slim cable housings. Below is the functional pin group allocation common to the device architecture: USB Interface Group 5V Power input from the USB host.

The datasheet’s software section is crucial for Windows and Linux compatibility.

: Compact aluminum alloy shells that act as a heat sink and shield against RF interference. Verdict cx31993 datasheet

Handles USB protocol decoding, endpoint management, and descriptors.

While most modern tech components have easily accessible manuals, the CX31993—a high-performance

To facilitate the evaluation and development of systems using the CX31993 IC, several evaluation boards are available. These boards provide a platform for testing and evaluating the IC, allowing designers to quickly assess its performance and capabilities. She was a "Sonic Archaeologist," a title she’d

The CX31993 comes in a small or WLCSP package. Key pin groups:

Regulated voltage output to power electret condenser microphones.

A: Yes. The CX31993 is specified to support headphones with impedance ranging from 16Ω to 600Ω. However, at higher impedance levels, the available output power decreases. For 600Ω headphones, the chip provides approximately 5mW of output power. This is sufficient for achieving reasonable listening levels but may not drive these headphones to their full dynamic potential. The CX31993 is typically packaged in a space-saving

Pin 1: VBUS (5V input) Pin 2: GND (Power ground) Pin 3: HP_DET (Headphone detection – detects 3.5mm insertion) Pin 4: MIC_BIAS (Provides 1.8V for electret microphone) Pin 5: MIC_IN (Mono microphone input from TRRS sleeve) Pin 6: AGND (Analog ground) Pin 7: HPOUT_R (Right channel output) Pin 8: HPOUT_L (Left channel output) Pin 9: VCOM (Common mode voltage reference – decoupling cap required) Pin 10: DVDD (Digital core voltage – 1.2V regulated internally) Pin 11: USB_DM (USB Data Minus) Pin 12: USB_DP (USB Data Plus) Pin 13: XTAL_IN (24MHz crystal input) Pin 14: XTAL_OUT (24MHz crystal output) Pin 15: RST_N (Reset – active low) Pin 16: VDDIO (I/O voltage – 3.3V)

A: Conexant (now part of Synaptics) has not publicly released the full technical datasheet for the CX31993. Some sources indicate that official technical documentation for this chip may have been discontinued. This article synthesizes information from product implementations, technical analyses, and independent measurements to provide the most complete technical picture currently available.

When implementing the CX31993 based on the datasheet, pay close attention to:

CX31993 Datasheet: High-Resolution USB-C Audio Codec Specifications