INTRODUCTION
The CM6646 is a USB 2.0 high-speed audio codec with 2-channel DAC and 2-channel ADC for Headphone, Microphone and Headset applications. It supports USB Audio Class 2.0 and high-definition audio formats(Up to 192KHz/32bits). The CM6646 provides standard S/PDIF output digital audio interface. Moreover, the CM6646 supports I2C, SPI and GPIOs to communicate with external device. It also supports 5 bands EQ for both playback and recording interface.
The CM6646 is embedded with 8051 MCU and 512KB flash makes it is very flexible to change the USB topology or communicate with external device by changing internal flash code. It also integrates 6 PWM LED drivers for status indication.