Generating a clock input for PCM1725U

[rsocor01]

Hi, Im trying to test some PCM1725U chips but im not quite sure how the SCKI (system clock input) pin is supposed to work. Normally with PICs i would use a ceramic resonator or crystal and 2 capacitors. This chip only seems to have 1 pin for the clock input so im not sure how i would generate the pulse. Should i use a 555 timer or something similar?

Hi,

Since you need at least 8 MHz clocking signal, then HPWM is out of the picture. Another option would be to use the CLKO feature that some PICs have like the 18F4550 on RA6. I have never used it, but according to the datasheet it can output a system cycle clock output of Fosc/4.

Well, maybe somebody else can provide a better answer.

Robert