WM9705 datasheet(17/55 Pages) WOLFSON

17 / 55 page

WM9705

Production Data

PD Rev 4.0 December 2003

NON - AC’97 FEATURES

In addition to the AC’97 features offered, WM9705 also supports:

4-wire pen digitiser with integrated screen driver, featuring highly flexible modes of operation,

supporting autonomous screen conversions, and auxiliary conversions. Screen X and Y

connections driven from AUX and VID stereo input pins, which are still connected.

Headphone drive capability on MONO output, with extra signal routing switch PSEL, allowing

PHONE input to be routed to MONO output

Extra switch HPND after the mixer allowing MIX without DAC signal to be output to headphone

outputs, and so allowing DAC with no MIX to be output to LINE outputs.

2S audio output capability, in addition to SPDIF output, allowing support of an extra external

audio DAC for multi-channel solutions. SPDIF output may be hardware enabled.

Option to route the stereo audio ADC output to the SPDIF and/or I

2S digital outputs

Auto-detect of headphones or headset plugged into the AUX headphone outputs, with internal

routing of microphone signal from the headphone pin to the MIC1 input.

Battery monitoring input BMON that supports direct connection to battery voltages up to 6.5V.

MPM switch allowing mix of DAC + mixer output onto MONOUT and independent mix of DAC +

PHONE and/or PCBEEP onto LINEOUT or HPOUT.

Reset powerdown override – holding MASK high in reset overrides the PR bits forcing the

WM9705 into a low power mode

WM9705 Datasheet(PDF) 17 Page - Wolfson Microelectronics plc