Chapter 1: Product Overview 1-15
Touch Screen Controller
The MicroTouch
®
“Excalibur” chip is used to interface the touch panel.
This controller supports MicroTouch capacitive panels.
In order to save an RS-232 port, the touch data is delivered to the
system through the mouse interface. This requires a mouse-aware
touch device driver for the appropriate OS.
When the system is operating in the dimmed display mode, touch
activity can restore full brightness if instructed by software to do so.
When system is in low power mode, touch activity can generate the
mouse port interrupt (IRQ12).
The Summa POS Motherboard supports the following touch screen
LCDs;
• Sharp TFT LCD/capacitive touch screen (F002)
• Sharp TFT LCD/resistive touch screen (F004)\
• 15-inch LG TFT LCD/capacitive touch screen (F008)
Processor Board Connectors
All connectors are either keyed or impossible to plug incorrectly due to
mechanical design of the product.
External Connectors Internal Connectors
VGA CRT RGB 15-pin D Shell LCD
Ethernet RJ45 Back light Inverter
Dual USB Type A Integrated Speaker Module
External Stereo speaker
(3.5mm jack)
MSR
Power supply Touch screen (PS/2)
RS-232 9-pin D shell (two, one
with +12 V power option)
PS/2 Keyboard Motion Sensor / Power Indicator
Customer Display PCI Expansion header
