Specifications

1 Product Overview 1
CW6631B Bluetooth Audio Player Microcontroller Version 1.0.0
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1 Product Overview
1.1 Outline
CW6631B is an MCS-51
TM
Compatible high performance mixed signal microcontroller. It integrates advanced digital
and analog peripherals to suit for BT audio playback and BT Communicate applications.
1.2 Features
 CPU Compatible with MCS-51TM instruction set;
 Compliant to Bluetooth 3.0 + EDR,
backward-compatible with BT1.2, 2.0 and 2.1
 Support SCMS-T content protection method;
 Support HFP v1.6, HSP v1.2, A2DP 1.3, AVCTP
1.4, AVDTP 1.3 and AVRCP 1.5
 Class 2 power level, RF Performance: Tx:0dBm,
Rx: -80dBm;
 Support simple pairing and auto reconnection
function;
 Support MP3/SBC decoder;
 Support two pairs of AUX;
 Six Channels 10-bit SARADC;
 CW6631B support 16bit Stereo DAC with >90dB
SNR, embedded with four class A/B headphone
amplifier
 16bit Mono ADC with >90dB DR
 Support Audio record function to MIC ADPCM;
 Support Audio playback from SD/USB
 Keypad tone mixer;
 Two 8-bit timers, support Capture and PWM
mode;
 Two 16-bit timers, support Capture and PWM
mode;
 Watchdog Timer with on-chip RC oscillator;
 Support full-duplex IIS, UART, SPI, SD interface;
 Support IIC interface for FM function;
 2 channels 16 levels Low Voltage Detector;
 Power on Reset
 Support Full speed USB 2.0 PHY;
 Full speed USB 2.0 HOST/DEVICE controller;
 IR controller;
 Independent powered Real-Time Clock
supporting 32.768kHz crystal
 Internal crystal oscillator support 26M crystal
 Internal LDO regulator:1.35V to 1.2V;4.2V to 3.3V
 Built-in buck converter,DC-DC:4.2V to 1.35V