CM6510B is a USB 2.0 audio chip builds in 8051 for flexible applications. With internal 2-channel ADC and DAC, S/PDIF interface and USB 2.0 High speed switch makes it suits for different kinds of Docking applications, such as iDevice docking, Android Phone or Tablet/Slate docking device and Netbook/Notebook docking.

CM6510B is compatible with USB audio Class 1.0, thus it can plug & play without additional software installation on the major operation systems. The internal DAC/ADC and S/PDIF out interface support96K/88.2K/48K/44.1KHz sampling rate and 16/24bit resolution.

CM6510B integrates the Equalizer on both playback and recording paths. With I2S in/out interface, it can connect external DAC to get higher audio quality or external DSP to process the audio data.


USB Compliance

  • USB 2.0 full-speed compliant
  • USB Audio Class 1.0 compliant
  • USB Human Interface Device (HID) Class 1.1 compliant
  • Supports USB suspend/resume/reset functions
  • Supports control, interrupt, bulk, and isochronous data transfer
  • Support Synchronous and Asynchronous audio data synchronization

Audio I/O

  • Playback Streams:
    -Stereo DAC
     *Sample Rates: 8K/11.025K/16K/22.05K/32K/44.1K/48/88.2/96K 
     *Supports Bit Length: 16/24 bits
    -Builds in S/PDIF transmitter 
     *Sample Rates: 32K/44.1K/48/88.2/96K
     *Supports Bit Length: 16/24 bits
     -Build in I2S interface with DSP mode
     *Sample Rates: 8K/11.025K/16K/22.05K/32K/44.1K/48/88.2/96K 
     *Supports Bit Length: 16/24 bits
  • Recording Streams:
    -Stereo ADC
     *Sample Rates: 8K/11.025K/16K/22.05K/32K/44.1K/48/88.2/96K
     *Supports Bit Length: 16/24 bits
    -Build in I2S interface with DSP mode
     *Sample Rates: 8K/11.025K/16K/22.05K/32K/44.1K/48/88.2/96K 
     *Supports Bit Length: 16/24 bits

Integrated 8051 Micro-processor

  • Embedded 8051 micro-processor to handle the comment/protocol transactions
  • Connects to an external EEPROM memory for firmware codes
  • HID interrupts can be implemented via firmware codes
  • Provides maximum HW configuration flexibility with firmware code upgrade
  • VID/PID/Product String can be customized via firmware code programming

Control Interface

  • Master I2C control interface for external audio devices or EEPROM access
  • UART interface can be the MIDI interface or standard UART interface
  • Max. 15 GPIO pins can be configured via firmware programming
  • GPIOs are configured as HID key and LED indicators
  • IR interface to support remote control


  • Hardware pins for mode configuration including Headset, Speaker, Docking and Mic
  • Hardware pin for A-A path enable/disable
  • Only single 12MHz crystal input is required (embedded PLL function)
  • Single 5V power supply (embedded 5V to 1.8V regulator for digital core, 5V to 3.3V regulator for digital IO, 5V to 3.5V regulator for analog codec)
  • 3.3V digital I/O pads with 5V tolerance
  • Industrial standard LQFP-64 package (7x7mm)
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