BECKHOFF CB3053 - Manual (Page 18)

Chapter: Connectors System
page 18 Beckhoff New Automation Technology CB3053
4.4 System
Some typical signals for system control are provided through a 2x9 pin connector (JST B18B-PHDSS,
mating connector: PHDR-18VS). This connector combines signals for power button, reset, keyboard,
speaker, and several LEDs such as harddisk LED, touch screen LED, suspend LED, and three additional
LEDs which are driven by GPIOs. Of these three GPIO-LEDs, LED1 and LED2 are already provided with
a series resistor. As can be seen from the pinout table below, corresponding signals are often placed
vis-à-vis or at least near to each other.
Description Name Pin Name Description
ground GND 1 10 PWRBTN# on/suspend button
ground GND 2 11 RESET# reset to ground
LED touch screen TOUCHLED 3 12 3.3V 3.3 volt supply
LED suspend / ACPI S-LED 4 13 S3.3V standby supply 3.3 volt
LED harddisk HDLED 5 14 3.3V 3.3 volt supply
LED GPIO device LED1 6 15 3.3V 3.3 volt supply
LED GPIO device LED2 7 16 LED3 LED GPIO device
speaker to 5 volt SPEAKER 8 17 KDAT keyboard data
standby supply 5 volt (S)VCC 9 18 KCLK keyboard clock