STMicroelectronics STEVAL-CCA035V1

Overview

STEVAL-CCA035V1 from STMicroelectronics is a USB interface demonstration board implementing the APWLink protocol to control ST Sound Terminal® evaluation platforms. It supports S/PDIF, AES/EBU, and IEC 958 digital audio formats via the STA120D transceiver, includes an onboard STA529Q ADC for analog-to-digital conversion, and draws power directly from a USB Type-B cable-no external supply required.

For engineers reviewing the STEVAL-CCA035V1 datasheet, STEVAL-CCA035V1 pinout, STEVAL-CCA035V1 application, or STEVAL-CCA035V1 equivalent, this board serves as a validated USB-to-digital-audio bridge for ST's Sound Terminal ecosystem, enabling rapid integration of audio control and signal routing in development environments.

Technical Context

The board implements APWLink-a proprietary ST protocol for host-to-Sound Terminal communication-using the STA120D as its core digital audio interface IC. It routes USB-derived control signals to target boards while simultaneously accepting analog (via onboard STA529Q) and serial digital inputs (S/PDIF/AES/EBU).

Signal conditioning includes dual-path input handling: one path digitizes analog audio through the STA529Q ADC; the other passes through the STA120D with format translation and clock recovery support for professional-grade digital audio streams compliant with IEC 958.

Key Specifications

Availability

STEVAL-CCA035V1 is available at Aetrix Electronics and suitable for audio system prototyping, ST Sound Terminal® evaluation, and USB-based digital audio interface validation requiring stable component supply and documented reference design support.

Supply support for STEVAL-CCA035V1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, analog ICs, power management devices, and MEMS sensors for industrial, automotive, and consumer applications.

This board belongs to ST's STEVAL (ST Evaluation) series-engineered specifically to accelerate evaluation and integration of ST's Sound Terminal® audio SoCs and associated peripherals in real-world audio subsystems.

FAQ

What is the primary function of the STEVAL-CCA035V1 board?

The STEVAL-CCA035V1 functions as a USB-hosted APWLink interface board that sends control commands and audio data to ST Sound Terminal® demonstration platforms. It does not operate as a standalone audio processor but acts as a bridge between a PC and ST's audio evaluation ecosystem, supporting both analog and digital audio input paths for configuration and signal injection.

Does STEVAL-CCA035V1 support standard USB Audio Class (UAC) operation?

No. STEVAL-CCA035V1 uses ST's proprietary APWLink protocol over USB-not USB Audio Class 1.0 or 2.0. It requires ST-provided software tools and drivers to communicate with Sound Terminal® boards; it will not appear as a generic UAC device in Windows or macOS audio settings.

Which ST Sound Terminal® boards is STEVAL-CCA035V1 designed to control?

The board is validated for use with ST's Sound Terminal® family including STEVAL-CCA027V1, STEVAL-CCA028V1, and STEVAL-CCA030V1. Its APWLink interface matches the command set and timing requirements specified in ST AN3822 and related application notes for Sound Terminal® control and firmware update workflows.

Can STEVAL-CCA035V1 be used to capture or playback audio independently?

No. It lacks DACs, audio output amplifiers, or bidirectional streaming capability. Its ADC (STA529Q) digitizes analog input solely for forwarding to connected Sound Terminal® boards-not for host-side recording. Audio playback is handled exclusively by the target Sound Terminal® board under APWLink command control.