1. What it is

This is a manufacturer evaluation/demo board for Nuvoton's NPCP215F audio enhancement chip — a single-chip combination of a Waves MaxxAudio DSP and a stereo Class-D power amplifier used to make small speakers sound louder and fuller. The board lets an engineer feed audio in (analog RCA or S/PDIF digital), run it through the MaxxAudio sound-enhancement engine, and drive speakers directly from the on-board amplifier, with a Nuvoton NUC120 ARM Cortex-M0 microcontroller handling control/configuration. It is a development/lab tool, not a consumer product.

2. Key specs

- **Board:** Nuvoton "NPCP11XX EVALUATION BOARD," PCB silkscreen **980521525-012/A**, copyright 2012. Arrow/vendor ordering PN **NE-NPCP215F**, COO Taiwan.

- **Audio SoC under test (NPCP215F family):** Waves MaxxAudio-3 DSP + dual-channel Class-D amplifier, ~2 x 20 W into 8 Ω, ~9–26 V supply, I²S audio + I²C control, QFN-48 package. Includes MaxxBass, MaxxVolume, EQ/dialog enhancement (per Nuvoton/distributor data).

- **Control MCU:** Nuvoton **NUC120RE3ANARM** (NuMicro NUC120, ARM Cortex-M0, USB).

- **Digital audio I/O:** S/PDIF IN and S/PDIF OUT on RCA jacks, isolated by a **Pulse PE-65812NL** S/PDIF transformer.

- **Analog audio I/O:** RCA jacks (red/white/yellow).

- **Speaker output:** spring/screw speaker terminal blocks (multiple channels) along the board edge.

- **Power:** DC barrel jack input; bank of large electrolytic caps and power inductors for the Class-D output stage.

- **Expansion:** dual 2x_ pin headers (J6/J7-style) for signals/GPIO and external connection.

Nuvoton NPCP11xx / NPCP215F Audio SoC Evaluation Board

Specifications

Returns Accepted