CM6642中文资料USB2.0 high-speed audio single chip supports combo-jack swap, google button detection, 192KHz/24bit, optional digital ANC数据手册Cmedia规格书

描述 Description

The CM6642 is a low power single chip USB 2.0 High-Speed audio codec built-in MCU for flexible applications. With integrated PWM LED driver and 3-channel ADC/ 2-channel DAC and S/PDIF interface that makes it suitable for headset, headphone, docking, speakers, and microphone applications. The internal MCU can also be developed to a lot of different applications, such as VoIP device, Mobile Phone or Tablet/Slate docking device. The CM6642 is compatible with USB Audio Class 1.0/2.0 and USB 2.0 High-Speed, thus it can plug & play without any additional software installation on major operating systems. The internal DAC support from 44.1~192 KHz and ADC support from44.1~192 KHz sampling rate with 16/24 bits resolution.
The CM6642 also integrates 16K Byte OTP and crystal and just requires few passive components to make a finish product. Thus, it can save the total BOM cost and PCB area can be smaller.

特性 Features

●USB Compliance
·USB 1.1/2.0 Full-Speed and High-Speed compliant
·USB Audio Class 1.0 and 2.0 compliant
·USB Human Interface Device (HID) Class 1.1 compliant
·Supports USB suspend/resume/reset functions
·Support Selective Suspend mode

●Integrated Micro Controller Unit Microprocessor
·Embedded MCU micro-processor to handle the command/protocol transactions
·Embedded 16K Byte OTP
·4K Byte RAM for firmware extension and plug-in
·HID interrupts/buttons/functions can be implemented via firmware codes
·Provides maximum hardware configured flexibility with firmware code upgrade
·VID/PID/Product String can program by firmware

●Control Interface
·12 GPIO pins and firmware programmable
·GPIOs are configured as HID key and LED indicators
·PWM LED Driver

●General
·Crystal-less (embedded crystal function)
·Single 5V power supply (embedded 5V to 1.8V regulator for digital core, 5V to 1.8/3.3V regulator for digital IO, 5V to 1.8V regulator for analog codec)
·1.8/3.3V digital I/O pads with 5V tolerance
·Industrial standard QFN-48 package (5x6.5mm)

●Audio I/O
·Playback Stream:

          - Speaker/Headphone             1. Sample Rates: 44.1K/48K/96K/192KHz         2. Supports Bit Length: 16/24bits         3. DAC Gain Range is -65.6 ~ 0dB          - S/PDIF transmitter         1. Sample Rates: 44.1K/48K/96K/192KHz         2. Supports Bit Length: 16/24 bits·Recording Stream:

       - Microphone          1. Sample Rates: 44.1K/48K/96K/192KHz          2. Supports Bit Length: 16/24 bits          3. ADC gain range is -33.5 ~ 30dB           - A-A path Stream:          1. Line In to playback A-A path          2. Mix Line input to stereo playback both L/R channel          3. The Line In A-A path gain range is -34.5 ~ 12dB**Note 1: A-A path means Analog to Analog Mixer path