Lantronix XPort

Development Kit
2.6.4 Configurable Pins Interface Header JP4
JP4 can be used to monitor XPort™ pins 6 (CP1), 7 (CP2), and 8 (CP3). It can also be used
to connect external circuitry or LEDs to the evaluation board.
JP4
1
2
35
46
JP4 Pin # Connects To
1 3.3V
2 XPort™ Pin 7, CP2
3 Signal Ground
4 XPort™ Pin 6, CP1
5 External Reset – XPort™ Pin 3
6 XPort™ Pin 8, CP3
2.7 Timer
The timer circuit is a National LMC555 IC. The purpose of the timer is to generate a timer
clock (approximately 10 counts per second). This clock is routed to the input clock pin of the
PLD to be used for state machine and counter functions.
2-8 XPort™ User Manual and Development Kit