驊訊電子的CM6327A系列，提供完整USB麥克風單芯片解決方案。高整合單芯片可簡化周邊料件成本、降低開發(fā)時程，及實現(xiàn)高品質(zhì)錄音功能。適用于各種游戲主機或是PC平臺時，可呈現(xiàn)穩(wěn)定的高品質(zhì)音效，滿足中高階與客制化產(chǎn)品應用。搭配驊訊電子研發(fā)的PC卡拉OK軟件引擎，更可實現(xiàn)回音加強系統(tǒng)、人聲消除、歌曲升降KEY調(diào)整、魔音效果技術等。
驊訊電子亦提供業(yè)界最完整的USB耳機音頻單芯片解決方案CM6300/CM6308/CM108AH系列。嵌入式高音質(zhì)放大器提供獨立的44.1/48k取樣回路，可呈現(xiàn)更佳的音效品質(zhì), 除此之外, 驊訊電子亦提供一套加值軟件程序，其整合驊訊電子研發(fā)之噪聲消除、回音消除引擎、以及各種麥克風數(shù)組功能。并提供3D音效定位技術，將可完美呈現(xiàn)7.1聲道環(huán)繞音場，以及提供杜比與DTS相關的技術，讓使用者體驗全新不同的享受。
驊訊電子PCI接口音效處理解決方案，將提供音樂升降Key、消除原唱聲、及麥克風回音、魔幻語音等音效處理技術，讓升級聲卡的使用者享受加值的功能娛樂，并可適用于線上Karaoke及VOIP等應用。 針對游戲玩家，驊訊在高階音效芯片上開發(fā)出Xear3D EX (Extensions) 游戲音效引擎，可以讓玩家在Windows Vista，甚至將來的Windows 7上享受傳統(tǒng)DirectX游戲多聲道3D環(huán)繞、EAX 2、Dolby Digital Live, DTS Connect等，以及一般聲卡無法提供的音場效果。
Introduction
CM6327A is a highly integrated single chip USB audio solution which comprises more USB audio controller and applications. According to coming more experiences in PC USB Audio peripheral from Vendors’ recommend, Cmedia aggressively design one single chip to let vendors to come more integration products, and increase more revenues.
CM6327A contains high performance mono ADC, and have verious interface like I2C, allowing all kinds of microprocessor or DSP to communicate. Especially in advanced VOIP applications. CM6327A could give you low noise and high quality speech input solution, thus, when it comes to conference or public speech, it would be wonderful choice for you.
Also, CM6327A integrates all essential analog, 1CH ADC, PLL, regulator, USB transceiver, with external EEPROM to customize your own product string, PID and VID , 8/11/16/22/32/44.1/48KHz sampling rate and high quality 16-bit resolution and friendly general purpose inputs and outputs(GPIO) connect the CM6327A to peripheral hardware, like LED, keypads and buttons, there are many features could be programmable with external EEPROM and MCU. External MCU/EEPROM could be easily controlled via HID software interface. 2 LED indicator pins supported provide more flexible behavior with device on / off / operation / recording mute / and controllable flash time.
Product benefit
Highly integrated single chip USB microphone solution
Electrical Noise Immunity via USB Digital Link
Flexible interface to extent application field
Provide Microsoft Vista premium logo requirement
Flexible descriptor option by external EEPROM
Product features
USB specification 2.0 Full speed compatible and USB IF certification
USB audio device class specification 1.0 and USB HID class specification 1.1 compliant
Support control, interrupt and isochroous data transfers
USB suspend/resume and remote wake-up supported
Embedded USB transceiver and power-on reset circuit
Single 12MHz Crystal Input with On-chip PLL
High-power (500mA) and Low-power (100mA) mode options supported
Support series number string for operation system detect
Serial EEPROM programming interface supports customized VID/PID/Product string/ Manufacture string for device name changed and configuration
EEPROM interface support 24C02 data format
Mono ADC Input
ADC sampling rate 8K / 11.025K / 16K / 22.05K / 32K / 44.1K / 48K Hz, 16-bit resolution
Dynamic Range: 96db, THD+N: -89~96db
Digital Linear Microphone Gain Control function (-16db~45db)
1.0 Vrms input swing biased at 2.25V
Support Microsoft HID functions
Support I2C (Master/Slave) control interface for external controller used
I2C MCU read/write support 16 bytes data transfer bandwidth
I2C interface support extra interrupt pin (INT)
MCU / EEPROM / GPIO control via HID / Vender command interface
USB audio topology has 1 Input Terminals, 1 Output Terminals, 1 Selector Unit, and 1 Feature Unit
Support 2 LED indicator pins:
On / Off / Operation
Recording mute
Support 8 GPIO and 3GPI Pins
Isochronous transfer uses Adaptive Mode with Internal PLL for Synchronization
Embedded Power-On-Reset Block
Single 5V power supply with embedded 5V to 3.3V regulator
Industry standard LQFP-48 Pin package
Compatible with Win2000 / WinXP / Vista / MAC / OSX / Linux
Support Hardware SDK tool for third-party software development
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