SR3 Type 1 Technical Manual TSP005.doc Issue 5.0 – Jan 2005
Money Controls 2005. All rights reserved.
Page 45 of 50
25.4 Circuit 4 – ccTalk PC Interface
The circuit below shows how to connect the 9-pin serial port of a PC to the ccTalk data bus.
The only integrated circuit required is a Maxim level-shifter which operates off a single +5V
supply. Any small-signal diodes and transistors can be used.
Figure 22: Circuit 4, ccTalk PC Interface
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