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Product Descriptions

The CM6646X1 is a USB 2.0 high-speed audio codec with 2-channel DAC and 2-channel ADC for Gaming Headset applications. It supports two playback audio devices with independent volume control for game and chat. It also supports mixing function for two playback audio devices. Moreover, the CM6646X1 supports I2C, SPI, UART and GPIOs to communicate with external device. There are 5 bands EQ for both playback and recording interface to compensate the frequency response of speaker or MIC unit or to fulfill personal listening experience.

The CM6646X1 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.

Product Benefits

• USB audio class 2.0 full-speed / high-speed compliant

• 2-channel DAC and 2-channel ADC and 22 GPIOs

• Audio format support up to 192KHz / 32bits

• 2 output device / dual sound card for chat and game sound

• Embedded MCU and Flash for customization

• Xear? Surround HP and AI Noise Reduction

Product Features

USB Compliance

• USB 2.0 full-speed/high speed compliant

• USB audio class 2.0 compliant

• USB human interface device (HID) class 1.1 compliant

Architecture

• Support USB suspend/resume/reset functions

• Support control, interrupt and isochronous data transfers

• Embedded 8051 micro-processor handles the USB transfers(control, isochronous and interrupt)

• Communicate with external peripheral devices(I2C, SPI, GPIO, etc.)

• The MCU speed is programmable from 3.072 to 65.536 MHz

• HID interrupts can be implemented via firmware codes

• Provide maximum HW configuration flexibility with a firmware code upgrade

• VID/PID/product string and others can be customized via firmware code programming

• Support 5 bands playback and recording EQ

Audio I/O

• 2-channel DAC outputs with headphone amplifier (supports 16/24/32-bit resolution and 192KHz, 176.4KHZ, 96KHZ, 88.2KHZ, 48KHz, 44.1KHz sampling rates

• 2-channel ADC inputs (supports 16/24/32-bit resolution and 192KHz, 176.4KHZ, 96KHZ, 88.2KHZ, 48KHz, 44.1KHz sampling rates

• Analog input to analog output mixer path with independent volume control

• Support 2 output devices / dual sound card for chat and game sound

Control Interfaces

• 1 Master I2C control interface to communicate with external devices or EEPROM, the master I2C speed supports standard mode(100KHz) and fast mode(400KHz)

• 1 Slave I2C control interface for external MCU communication, the slave I2C speed supports standard mode(100KHz) and fast mode(400KHz)

• 1 SPI master(share with GPIO), supports speed up to 24.576 Mb/s (Depends on MCU speed)

• 22 GPIOs(programmable multi functions I/O)

• 6 PWM LED drivers output share with GPIO

General

• Embedded USB 2.0 transceiver and power-on reset circuit

• Bus-power and self-power options

• Embedded oscillator for Crystal-less design

• True Cap-less/zero-ground headphone driver with patent applied anti-pop technology

• Embedded 7-bits SAR ADC supports Combo jack and Google button detection

• Single 5V power supply with embedded 5V to 3.3V regulator

• 3.3V digital I/O pads with 5V tolerance

• Compliant with USB IF certification requirements

• QFN-68 package (7 x 7 mm)

Xear? Sound Processing

• Xear? Surround Headphone

• Xear? Software 10 Band Equalizer

• Xear? Audio Brilliant

• Xear? Dynamic Bass

• Xear? Voice Clarity

• Xear? Smart Volume

• Xear? Magic Voice

• Xear? AI Noise Cancellation

  Specifications

Actual product photos

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Official Certificate&Certificate

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