All the clock does is enable the sample rate indicator.
So it is not possible to use an external clock for its operation ..... right? Thank you for your reply!
Not without doing other things .
I'd like to know what other things to do, because I'd be willing to try, but I can't find instructions and the meaning of my post was just that ... find information! 🙂
I'd like to know what other things to do, because I'd be willing to try, but I can't find instructions and the meaning of my post was just that ... find information! 🙂
I doubt you'll get any info from Mr. rfbrw. He often tells you you're wrong but never shares his knowledge on what to do correctly. I have crossed paths with him before.
I am not 100% certain you can with this chip. I am not saying it can't be done (I'm not that clever) but from a read of the datasheet I don't think so.
The CS8416 I think can be made to accept an external clock. I am looking into this myself. Looking at the Evaluation PCB which was available when the IC was new it does have an external Crystal oscillator. I'm not sure yet what to do to tell the IC to accept this over the internal timing, more study of the datasheet needed.
If your project hasn't gone too far with the 8414 then it may be worth considering the 8416.
Cheers,
P.
I'd like to know what other things to do, because I'd be willing to try, but I can't find instructions and the meaning of my post was just that ... find information! 🙂
MCLK has to be derived from, or locked to a clock derived from, the SPDIF signal. To that end you can replace the master clock from the CS8414 with the output of a VCXO locked to the FSYNC or MCLK output of the CS8414. You will find an example of either option in the Pass D1 schematic, the Stax Talent DAC1 schematic or the PMD100 demoboard application note. If you can't find those PDF files there is another example here.
Last edited:
- Home
- Source & Line
- Digital Source
- Add external Clock to CS8414