Winbond Issues W681308 Audio Controller

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Winbond Electronics Corporation America has introduced a new highly integrated USB audio controller for the fastest growing area of the VoIP telephony market. The W681308 can be designed in all application segments of a Skype or other PC-based VoIP system and substantially speeds design time and time-to-market, increases system reliability and significantly lowers system cost. The W681308 is the latest addition to Winbond's growing family of USB Audio Controllers. With full function integration that quickens design time, the W681308 provides a single-chip, one-stop solution for a spectrum of Skype and other PC-based VoIP applications from wired and wireless USB handsets, to USB speaker phones, to PSTN/USB dual mode phones, to USB PSTN gateways and USB Analog Telephone Adapters to the wireless USB 2.4Ghz base / handset. Winbond's new higher-integration part can replace 3 to 4 devices and offers the lowest BOM costs for PC-based VoIP applications. Its 16-bit ADC/DAC with 8/16/48-kHz wide-band sampling rate results in the best voice quality in a VoIP environment.

Winbond's W681308 chip is USB2.0 full speed compatible and integrates a fast 8051 MCU that enables feature rich applications. The part also has a 8/16/48-kHz sampling rate wideband Codec with a 16-bit ADC/DAC and Acoustic Echo cancellation and AGC to support USB speaker phone applications. This single-chip solution also supports full-duplex echo cancellation, 3-channel PCM mixer, integrated microphone amplifier and speaker driver, flexible OTP custom programming and complete reference design solutions. The high integration of the W681308 enables lower cost and smaller board space design.

This device joins the Winbond USB Audio Controller Series (W681306, W681307 and W681308) which provides a complete line of USB VoIP and audio solutions including Skype with integrated, fast MCUs, USB2.0 Full Speed compliant controller, 16-bit ADC/DAC with 8-kHz to 48-kHz sampling rate. They support Skype or SIP USB VoIP application and other Instant Messaging options such as MSN and Yahoo Messenger. This Series is designed to provide the highest voice quality in a VoIP environment and delivers USB VoIP solutions for customers with the shortest time-to-market requirements.

A complete Software Development Kit and 8051-based Keil C development system for these parts is available.

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