onsemi BR262CPP01GEVK

Overview

BR262CPP01GEVK from onsemi is an evaluation kit for the BelaSigna® R262 wideband voice capture and noise reduction SoC, designed to accelerate development of high-clarity voice interfaces in mobile phones, VoIP devices, and two-way radios. It supports dual-microphone beamforming, 360° voice pickup (5 cm–5 m), de-reverberation, and simultaneous dual-configurable audio outputs with 81 dB dynamic range and 17 mA active current draw.

For engineers reviewing the BR262CPP01GEVK datasheet, pinout, applications, or equivalent options, this page delivers verified hardware configuration guidance, I²C/SPI boot control mapping, analog/digital output validation, microphone biasing recommendations, and PCB layout best practices for mixed-signal audio integrity.

Technical Context

The BR262CPP01GEVK implements the full BelaSigna R262 reference design, including dual analog microphone inputs (MIC0/MIC2), configurable analog outputs (A_OUT0/A_OUT1), digital microphone output (DMIC_OUT), and I²C/SPI debug and configuration interfaces. It validates the chip's 21.333 kHz sampling rate, 24 dB preamp gain, 1.0 V VREG and 2.0 V VDDA internal supplies, and low-power sleep mode (40 µA).

Hardware configuration is managed via four LSAD-mapped pins (CLOCK_SEL, BOOT_SEL, CHAN_SEL, ALPHA_SEL), enabling preset selection for boot method, talk distance (5 cm–5 m), and channel mixing. The board supports both ROM-based default operation and custom firmware loading via SPI/I²C EEPROM or host processor download.

Key Specifications

Availability

BR262CPP01GEVK is available at Aetrix Electronics and suitable for voice interface development, acoustic noise reduction prototyping, and embedded speech processing validation requiring stable component supply and traceable sourcing.

Supply support for BR262CPP01GEVK 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

onsemi (Nasdaq: ON) is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The BelaSigna® product line delivers highly integrated, ultra-low-power voice processing SoCs optimized for far-field voice capture, real-time noise suppression, and seamless integration into space-constrained consumer and professional audio devices.

FAQ

What is the primary function of the BR262CPP01GEVK evaluation kit?

The BR262CPP01GEVK evaluation kit provides a fully validated hardware platform for developing and testing voice capture systems using the BelaSigna R262 SoC. It enables rapid evaluation of wideband noise reduction, dual-microphone beamforming, de-reverberation, and configurable audio outputs without custom PCB design. Engineers use BR262CPP01GEVK to verify microphone placement, validate I²C/SPI configuration sequences, and characterize analog output fidelity before final system integration.

Does BR262CPP01GEVK support both analog and digital microphone inputs?

Yes, BR262CPP01GEVK supports dual analog microphone inputs (MIC0 and MIC2) with 24 dB programmable preamplifier gain and configurable VMIC bias (1.0 V or 2.0 V). It also supports digital microphone output (DMIC_OUT) at selectable clock frequencies (2.048–3.072 MHz), but does not provide direct digital microphone input-DMIC signals are generated by the R262 itself for downstream codec interfacing.

How is boot mode selected on the BR262CPP01GEVK?

Boot mode on BR262CPP01GEVK is selected via voltage levels on four hardware pins: BOOT_SEL, CLOCK_SEL, CHAN_SEL, and ALPHA_SEL. These pins are sampled during power-on-reset using the R262's low-speed A/D converters. For example, applying 0.36–0.49 V to BOOT_SEL configures BR262CPP01GEVK for Active Mode with Close-to-Far-Talk distance (5 cm–5 m), while 0–0.07 V selects Bypass Diagnostic Mode with full stereo pass-through.

What power supply requirements must be met when using BR262CPP01GEVK?

BR262CPP01GEVK requires a single 1.65–3.63 V supply on VBAT, with mandatory 1 µF decoupling capacitors placed near VBAT, VREG, VDDA, VDDD, and VDDO pins. VREG (1.0 V) and VDDA (2.0 V) must be isolated on separate analog ground (VSSA) planes; VDDD and VDDO connect to digital ground (VSSD). VBATRCVR requires a 4.7 µF capacitor only if analog outputs are actively driven.

Can BR262CPP01GEVK be used to develop custom firmware for the BelaSigna R262?

Yes, BR262CPP01GEVK supports custom firmware development via its I²C and SPI interfaces. The kit allows loading custom applications from external SPI or I²C EEPROM, or direct download from a host processor over I²C. Debug capabilities-including DEBUG_TX/DEBUG_RX serial port and real-time signal statistics access via I²C-enable algorithm tuning, level calibration, and performance validation during BR262CPP01GEVK-based firmware development.