W681308
XXXX PRODUCT DESCRIPTION
1.
General Description
W681308 USB Audio Controller from Nuvoton integrates fast 8051 Microcontroller Unit (MCU), Universal Serial Bus (USB)
2.0 Full Speed compliant controller with PHY, 16bit high quality Analog to Digital Converter / Digital to Analog Converter
(ADC/DAC) with 8/16/48 KHz wide band sampling rates, speaker phone and echo cancellation, 8 KB One Time
Programmable (OTP) program memory and 1 KB data memory in a single 48 pin Low-profile Quad Flat Package (LQFP).
MCU includes Joint Test Access Group (JTAG) In-Circuit Emulation(ICE) interface and can handle customer programs such
as keypad scan, LCD control, caller list download, and USB and CODEC control among other features. W681308 provides
highest integration and low BOM cost solution with 8051-based development platform for USB Audio peripherals and USB
VoIP devices such as Skype® , other IM and SIP-based application.
With Nuvoton’s market proven CODEC product experience, W681308 is designed to provide high audio quality in VoIP and
audio devices applications and deliver USB Audio/VoIP solution with the shortest time to market, time to volume and time to
profit
2.
Features
8 Bit Turbo MCU
Embedded 12/24/48 MHz Turbo 8051 MCU with 4 Clocks per machine Cycle
1 KB system RAM, 8 KB OTP ROM
256 byte internal RAM (8051)
Power on Reset circuit
Software Idle mode
In Circuit Emulation (ICE) through JTAG Interface
High Quality 16 bit Mono Audio Linear CODEC
Built-in 8/16/48 KHz sampling rate wideband mono audio CODEC and true 16-bit resolution ADC/DAC with internal 24-bit audio
processing for both record and playback
Analog microphone(MIC) amplifier and speaker driver with internal programmable gain stage
82 dB Receive SNR @ 8 Ohm load
USB 2.0 Full speed (FS) Interface with integrated PHY
USB 2.0 FS compliant device controller and PHY with 12 Mbps communication speed
Support 6 USB endpoints configuration: Control, ISO IN/OUT, Bulk IN/OUT and Interrupt IN
512-Byte RAM-based USB descriptor for multiple USB device support through 8051 MCU
Less than 500uA supply current in suspend mode
Fully integrated cap-less microphone amplifier with microphone bias
Dual earphone / speaker driver and buzzer
Integrated DAC switch for earphone or speaker phone
Integrated Acoustic Echo Cancellation (AEC)
Support both half-duplex AEC and 32ms full duplex AEC
Built-in digital Auto Gain Control (AGC) with microphone input for speaker phone application
Integrated keypad control pins and GPIO
Suitable for VoIP application
Volume up and down
Dial / hang up
Microphone and speaker phone mute
LED indicators
6
Rev1.2
NUVOTEM TALEMA [ NUVOTEM TALEMA ]
