Dear friends,
I am building a CPU from scratch. I have already designed everything on paper except the schematics.
My question concerns so called termination resistors. I have researched on other peoples homemade CPU's and I have heard about using termination resistors for CPU's running at 4MHz or so.
I thought these only needed to be used for much higher speed circuits. As far as I know, termination resistors are needed to damp the main signal lines so that they do not behave like little antennas when the circuit is at high frequencies. I have also heard that the actual frequency is not the matter, but that the matter is the speed at which the actual signal changes from high to low and vice versa.
Can anyone PLEASE let me know when does one need termination resistors? I am planning to run my CPU at the same speed of 4MHz.
Your help is much appreciated.
Thanks
Paul
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I am building a CPU from scratch. I have already designed everything on paper except the schematics.
My question concerns so called termination resistors. I have researched on other peoples homemade CPU's and I have heard about using termination resistors for CPU's running at 4MHz or so.
I thought these only needed to be used for much higher speed circuits. As far as I know, termination resistors are needed to damp the main signal lines so that they do not behave like little antennas when the circuit is at high frequencies. I have also heard that the actual frequency is not the matter, but that the matter is the speed at which the actual signal changes from high to low and vice versa.
Can anyone PLEASE let me know when does one need termination resistors? I am planning to run my CPU at the same speed of 4MHz.
Your help is much appreciated.
Thanks
Paul
Moderators note: Please leave the original question.
Removing it will make the thread render useless.
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