J
john
Hello,
I am using the cypress clock generator CY2292F to generate a clock of
25Mhz for my CPLD ( ATF1508 AS). The CY2292F has a load impedance of
15pf , if it is programmed as 3.3volts. The cpld has 10pF input
impedance. Now, I am having following problems with the part
1. If I program it for 25Mhz then it produces like 13 Mhz. So I have to
program it for 50Mhz to generate 25Mhz.
2. like an hour after the powerup the cy2292f changed its frequency to
30Mhz and the clock waveform looks like sine wave instead of square
wave.
Please advice!
Thanks
john
I am using the cypress clock generator CY2292F to generate a clock of
25Mhz for my CPLD ( ATF1508 AS). The CY2292F has a load impedance of
15pf , if it is programmed as 3.3volts. The cpld has 10pF input
impedance. Now, I am having following problems with the part
1. If I program it for 25Mhz then it produces like 13 Mhz. So I have to
program it for 50Mhz to generate 25Mhz.
2. like an hour after the powerup the cy2292f changed its frequency to
30Mhz and the clock waveform looks like sine wave instead of square
wave.
Please advice!
Thanks
john