I'd like to divide it by 8 or 16
# mpw-3-siliconm
Matt Venn
06/15/2023, 12:38 PMI'd like to divide it by 8 or 16
t
Tim Edwards
06/15/2023, 1:32 PMNo, I don't have the output divider providing more that divide-by-8 from the DCO, and the DCO doesn't run slower than about 50MHz. The thing to do is just to override the external clock and provide the clock from a function generator. The clock is component X1 on the board, and there's a jumper next to it which is J6. If you install a header and and shunt on J6, then the clock is disabled and the output goes into a high impedance state. Then you can connect a function generator to the "xclk" pin on the board header.
👍 2
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Matt Venn
06/15/2023, 4:23 PMExcelent
Matt Venn
06/16/2023, 12:38 PMwith the clock set slow, I've not been able to program the flash
Matt Venn
06/16/2023, 12:39 PMso I have to turn off the clock gen, change the j6 header and then reflash
Matt Venn
06/16/2023, 12:39 PMis that expected?
t
Tim Edwards
06/16/2023, 12:40 PMNo, that's not expected. The external clock has nothing to do with the flash programming.
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Matt Venn
06/16/2023, 12:42 PMit definitely doesn't work with j6 header, always fails with SRAM not found error
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Tim Edwards
06/16/2023, 1:36 PMJ6 is the header right next to X1?
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Matt Venn
06/16/2023, 1:44 PMyeah
a
Anish
06/16/2023, 2:15 PM@Matt Venn did you try programming with your external clock set to 10mhz?
Anish
06/16/2023, 2:15 PMwould help deduce where the issue lies
Anish
06/16/2023, 2:16 PMI believe I was able to program fine with an external clock, although I don't think I tried anything as slow as 100khz
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Matt Venn
06/16/2023, 3:32 PMI can try that