NV1:NV40 clocks¶
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Introduction¶
NV1:NV40 GPUs have the following clocks:
- core clock [NVPLL]: used to clock the graphics engine - on NV4+ cards only
- memory clock [MPLL]: used to clock memory and, before NV4, the graphics engine - not present on IGPs
- video clock 1 [VPLL]: used to drive first/only video output
- video clock 2 [VPLL2]: used to drive second video output - only on NV11+ cards
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DLL on NV3
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NV1???
These clocks are set in PDAC [NV1] or PRAMDAC [NV3 and up] areas.
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