مدار مجتمع (آی سی) آی‌سی صوتی ویژه

Product Attributes

Introduction

The CM119BN is a highly integrated, crystal-free USB audio single chip solution optimized for USB headset, headphone, and dongle applications such as VoIP (Voice over Internet Protocol). All essential analog modules were embedded in the CM119BN including dual DAC and earphone driver, ADC, microphone booster, PLL, regulator, and USB transceiver. It also supports 8GPIO pins. In addition, audio adjustment can be easily controlled via specific HID compliant volume control pins. Many features are programmable with jumper pins or external EEPROM. Vendors can customize unique USB VID/PID/Product String/Manufacture String and min/max/initial volumes to EEPROM. The CM119BN also comes with an anti-pop noise circuits design and internal oscillator which can operate without an external crystal oscillator.

Features

• Compliant with USB 2.0 Full Speed Operation
• Compliant with USB Audio Device Class Specification v1.0
• Supports USB Suspend/Resume Mode and Remote Wakeup with Volume Control pins
• On-chip oscillator that provides reference sources for PLL and embedded USB transceiver
• Jumper pin for Headset Mode (Playback + Recording) and Speaker/Headphone Mode (Playback Only)
• Jumper pin for Operation System Mixer Unit Enable/Disable under Headset Mode
• Jumper pin for Power Mode setting
• USB audio function topology has 2 Input Terminals, 2 Output Terminals, 1 Mixer Unit, 1 Selector Unit, and 3 Feature Units (Headset mode)
• USB audio function topology has 1 Input Terminal, 1 Output Terminal, and 1 Feature Unit (Speaker Mode)
• Anti-pop noise design for device plugged and vice-versa, while A-A path is off
• Supports one Control Endpoint, one Isochronous out Endpoint, one Isochronous in Endpoint, and one Interrupt in Endpoint
• Alternate zero bandwidth setting for releasing playback bandwidth on USB Bus when the device is inactive
• Includes volume up, volume down, and playback mute support USB HID for Host Control Synchronization
• Includes Record Mute Pin with LED Indicator for Record Mute Status
• Includes external EEPROM Interface for Vendor Specific USB VID, PID, Product String, Manufacture String, and max/min/initial volumes
• Supports AES/EBU, IEC60958, S/PDIF Consumer Formats for Stereo PCM Data at S/PDIF Output
• Supports I2C Interface for External MCU Integrated
• Includes Isochronous transfer that uses Adaptive Mode with Internal PLL for Synchronization
• 48K/44.1KHz Sampling Rate for both Playback and Recording
• Soft Mute Function
• Embedded 16bit audio DAC with Earphone Phone Buffer
• Embedded 16bit ADC input with Microphone Boost
• Embedded power on Reset Block
• Embedded 5V to 3.6V/3.3V/1.8V regulators for single external 5V power