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ZEUS Technical Manual Detailed hardware description
© 2007 Eurotech Ltd Issue D 50
Touchscreen controller
The ZEUS supports 4-wire and 5-wire analogue resistive touchscreens using the
controller available within the Wolfson WM9712L audio CODEC. The touchscreen
controller supports the following functions:
• X co-ordinate measurement.
• Y co-ordinate measurement.
• Pen down detection with programmable sensitivity.
• Touch pressure measurement (4-wire touchscreen only).
The touchscreen can be used as a wake-up source for PXA270 from sleep mode.
The touchscreen interface is broken out on the header J1. For details see J1 –
Touchscreen connector
, page 77.