Showing posts with label regulate. Show all posts
Showing posts with label regulate. Show all posts

Saturday, February 4, 2012

Brain Taps

USING BRAIN TAPS
REGULATE Propeller Clocks Using TAPS
Propeller chips each have a PLL Phase Locked Loop. It's used to "wind up" the external clock source. The taps are located at 1x, 2x, 4x, 8x and 16x. To use a tap, select the program instruction, for example a 16x tap with a 5MHz crystal will result in a Propeller running its system clock at 80MHz. Remember, using crystals will add an extra part to each chip, though increases speed over a single chip with no external crystal.