HPSDR,<div><br></div><div>Upon examination of the RTL in Quartus-II for C122_CLK for Penny(Lane) - I don't explicitly see the method in which the 122.88 MHz clk is divided by 10 so that the system clk is</div><div>12.288 MHz - can someone point out where this divide by 10 is? Looking at the RTL shows the fan-out to be 212 and it is being fed from the pin directly into the clks for the internal logic on PennyLane.</div>
<div>Note I am looking at version 1.6 of the PnennyLane verilog.</div><div><br></div><div>So, unless that clk is being divided prior to the pin on PennyLane - C122_CLK is running at 122.288 MHz (125 MHz?) internal to the FPGA. Is the divide by 10 external to the FPGA?</div>
<div><br></div><div>Another question if it is OK - I see that the AIN1, AIN2, and AIN5 pins on the ADC are going through 2 D FF's - and the code says to use nCS to latch that data - is it always latched on every read or do you have to explicitly toggle the nCS? I see the ADC state machine seems to to this - but just wanted to ask what the thinking was on the ADC state machine is that was OK.</div>
<div><br></div><div>73's,</div><div>John</div><div>AJ6BC</div><div><br></div><div><br></div>