notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate. Datasheet PDF Download – TWO-OUTPUT LNB SUPPLY AND CONTROL- VOLTAGE REGULATOR, data sheet. Part, A. Category. Description, Clock Generator and Driver for , Processors. Company, Intel Corporation. Datasheet, Download A datasheet.
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I thought the systems clock would be a good place to start. After all without a good clock the processor is wasted. I purchased a handful of As and a 15MHz crystal to use with the x1 and x2 outputs.
I have put together my test circuit and it is shown below. The output is extremely close to 5Mhz. The time division knob is set to. The voltage is also consistent. However, it looks like the capacitors are discharging too soon. It’s no where close to a square wave! My guess is bigger capacitors on the x1 pin. The pF load on the CLK signal shown in the data sheet is a test load used to verify worst-case timing.
You don’t need to have it in your circuit, and the waveform will probably look a lot better without it. But actually, given that load, that waveform looks fine. Those old clock drivers didn’t produce particularly “square” waves — and in fact, you wouldn’t want them to, because it would just add to EMI and other bad effects.
Datasheet, PDF – Alldatasheet
The key things are that the edges are monotonic no glitches or “hooks” near the logic thresholds and that the spacing of the crossings about halfway between the peaks, datashedt line down on the ‘scope graticule has the right timing frequency and duty cyclewhich it does.
BTW, your reset wiring is incorrect.
The datasheet link says “Your require pages is cannot open by blow”: I added a new link.
Thanks for the heads up. What’s with the three caps at the left? Are they 1nF or 10 pF?? I didn’t even notice that! I will fix this as well.
Seriously, you need to go back and fix all the datasgeet in your part numbers. Are you really using the chip a. Or are you using thethe Intel chip normally driven by an not as shown in your schematic? Sign up or log in Sign up using Google.
8284A Datasheet PDF
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