CM7104 is a powerful 310MHz audio DSP with low power consumption. CM7104 DSP supports Cmedia Xear™ Surround Headphone, Dynamic Bass and parametric 10 bands equalizer for gaming solutions. It integrates 768KByte internal memory, I2C, SPI and 2-pair 24bit/8kHz~192kHz I2S digital I/O interface. It also integrates high-quality audio codec for audio playback and recording. CM7104 is a high performance and low power consumption for gaming applications.


  • Integrates 310MHz DSP and 768K Byte internal memory
  • Digital asynchronous sampling rate converter (ASRC) function
  • Support Sidetone generator
  • Parametric 10 bands equalizer (EQ) for playback path
  • Support JTAG debug interface
  • Integrates Internal PLL for clock input

Audio I/O

  • 2-channel DAC outputs (Up to 192KHz sampling rates)
  • 2-channel ADC inputs (Up to 192KHz sampling rates)
  • Two I2S/PCM/TDM digital interface (Up to 192KHz)
  • 2 stereo digital microphone interface

Control Interfaces

  • I2C master/slave mode control interface
  • SPI control interface (Up to 28MHz clock rate)
  • 1 GPIO pins


  • Industrial standard small footprint LQFP-48 green package

DSP Algorithm

  • Voice process

-Xear™ Volear Environment Noise Cancellation (ENC) HD technology for dual omni-microphones
-Adjustable 20-40dB cancellation of environmental dynamic and stationary noises and other parameters
-Supports a mic auto-calibration mechanism, allowing dual-mic sensitivity and mismatching in production
-Allows a wide placement distance range between two microphones (8-14 cm recommended)
-Supports mic-in auto-gain control (AGC) for ADC recording quality when the ENC HD function is on
-Acoustic Echo Cancellation (AEC) HD and Long Distance Recording (LDR) processing mode for speakerphones
-Mono-mic Noise Reduction (NR) HD processing mode for camcorder/voice recorders
-Up to 32KHz high-fidelity voice processing

  • Audio process

-Xear™ surround headphone
-Xear™ sound expander
-Xear™ Sonic
 *Dynamic bass
 *Audio brilliant
 *Voice clarity
 *Smart volume
 *Parameter Equalizer


More detail information for Dolby® and DTS® functions, please contact with C-Media sales.

Please contact Cmedia sales for more detail information.