DESCRIPTION

The WM9713L is a highly integrated input/output device designed for mobile computing and communications. The chip is architected for dual CODEC operation, supporting Hi-Fi stereo Codec functions via the AC link interface, and additionally supporting voice Codec functions via a PCM type Synchronous Serial Port (SSP). A third, auxiliary DAC is provided which may be used to support generation of supervisory tones, or ring-tones at different sample rates to the main codec.

FEATURES

• AC’97 Rev 2.2 compatible stereo codec

- DAC SNR 94dB, THD –85dB

- ADC SNR 87dB, THD –86dB

- Variable Rate Audio, supports all WinCE sample rates

- Tone Control, Bass Boost and 3D Enhancement

• On-chip 45mW headphone driver

• On-chip 400mW mono or stereo speaker drivers

• Stereo, mono or differential microphone input

- Automatic Level Control (ALC)

- Mic insert and mic button press detection

• Auxiliary mono DAC (ring tone or DC level generation)

• Seamless interface to wireless chipset

• Resistive touchpanel interface

- Supports 4-wire and 5-wire panels

- 12-bit resolution, INL ±2 LSBs (<0.5 pixels)

- X, Y and touch-pressure (Z) measurement

- Pen-down detection supported in Sleep Mode

• Additional PCM/I2S interface to support voice CODEC

• PLL derived audio clocks.

• Supports input clock ranging from 2.048MHz to 78.6MHz

• 1.8V to 3.6V supplies (digital down to 1.62V, speaker up to 4.2V)

• 7x7mm 48-lead QFN package

APPLICATIONS

• Personal Digital Assistants (PDA) with or without phone

• Smartphones

• Handheld and Tablet Computers