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HCLK. Primary clock pins #263

Merged
merged 1 commit into from
Aug 13, 2024
Merged

HCLK. Primary clock pins #263

merged 1 commit into from
Aug 13, 2024

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yrabbit
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@yrabbit yrabbit commented Jul 24, 2024

We add the ability to use a direct connection of the clock pins on the chip side with the HCLKs input on the corresponding side for the GW1N-9C.

For other chips this standard feature is automatically supported, but 9C is unique - here the wires are renamed.

This is not supported on the bottom side of the chip yet and probably won't be in the near future - but this is not a problem since the external clock generator on the Tangnano9k board is connected to the right side of the chip.

We add the ability to use a direct connection of the clock pins on the
chip side with the HCLKs input on the corresponding side for the
GW1N-9C.

For other chips this standard feature is automatically supported, but 9C
is unique - here the wires are renamed.

This is not supported on the bottom side of the chip yet and probably
won't be in the near future - but this is not a problem since the
external clock generator on the Tangnano9k board is connected to the
right side of the chip.

Signed-off-by: YRabbit <[email protected]>
@pepijndevos
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How does this relate to #258 ?

@yrabbit
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yrabbit commented Jul 28, 2024

This adds another signal source for the HCLK input MUX and therefore for the primitives that lie behind it, including the CLKDIV2/CLKDIV primitives introduced in the above PR 258.

@yrabbit yrabbit merged commit 1c507c2 into YosysHQ:master Aug 13, 2024
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@yrabbit yrabbit deleted the gw1n-9c-pclk branch August 21, 2024 23:47
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2 participants