AN827
AN827 is The Technique of Direct Programming manufactured by Motorola Semiconductor.
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
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AN827 The Technique of Direct Programming by Using a Two-Modulus Prescaler
Prepared by: PLL Applications
The theory in this application note is still applicable, but some of the products referenced may be discontinued.
INTRODUCTION
The MC12009, MC12011, or MC12013 can be used as part of a variable modulus (divisor) prescaling subsystem used in certain Digital Phase- Locked Loops (PLL). More often than not, the feedback loop of any PLL contains a counter- divider. Many methods are available for building a divider, but not all are simple, economical, or convenient in a particular application. The technique and system...
