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Master Clock

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The Master Clock is 21.48 MHz on NTSC and 21.28 MHz on PAL. It is a crystal oscillator.[2]

The master clock (X1) is in region A4 of the jwdonal schematic

The S-DSP has an unconnected pin 40 which may have been intended to be connected to the master clock at some point.

See Also

Reference

  1. http://problemkaputt.de/fullsnes.htm#snestimingoscillators
  2. Sanglard, Fabien. The Hearts of the Super Nintendo. https://fabiensanglard.net/snes_hearts
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