TSC2300 Datasheet, PDF (45/81 Pages) Texas Instruments – PROGRAMMABLE TOUCH SCREEN CONTROLLER WITH AUDIO CODEC

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Screen
Touch
Host Controlled
Y Coordinate
TSC2300
SLAS372 — NOVEMBER 2002
Host Writes A/D
Converter Control
Register
Issue Interrupt
PENIRQ
Is PENSTS =1
N
Go To Host Controlled
Conversion
Host Writes A/D
Converter Control
Register
Done
Reset PENIRQ
Turn On Drivers: Y+, Y–
Done
Start Clock
N
Turn On Drivers: Y+, Y–
Are Drivers On
Y
Start Clock
Is Panel Voltage
Stabilization Done
Y
N
Power up ADC
Conver Y coordinates
Is Data
N
Avereraging Done
Y
Store Y Coordinates in Y
Register
Power Down ADC
Set /DAV = 0
Figure 59. Y Coordinate Reading Controlled by Host.
Turn off clock
Done
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