ML145146
LANSDALE Semiconductor, Inc.
APPLICATION
MC
The features of the ML145146 permit bus operation with a
dedicated wire needed only for the strobe input. In a micro-
processor–controlled system this strobe input is accessed
when the phase lock loop is addressed. The remaining data
and address inputs will directly interface to the microproces-
sor’s data and address buses.
The device architecture allows the user to establish any
integer reference divide value between 3 and 4095. The wide
selection of ÷R values permits a high degree of flexibility in
choosing the reference oscillator frequency. As a result the
reference oscillator can frequently be chosen to serve multi-
ple system functions such as a second local oscillator in a
receiver design or a microprocessor system clock. Typical
applications that take advantage of these ML145146 features
including the dual modulus capability are shown in Figures
12, 13 and 14.
DEVICE A
DEVICE
B
DEVICE B
DEVICE A
ML12009
÷20/÷21
÷50/÷51
÷40/÷41
OR
÷80/÷81
ML12011
÷32/÷33
÷80/÷81
÷64/÷65
OR
÷128/÷129
ML12013
÷40/÷41
÷100/÷101
÷80/÷81
MC10131
MC10138
MC10154
NOTE: ML12009, ML12011 and ML12013 are pin equivalent.
ML12015, ML12016 and ML12017 are pin equivalent.
Figure 11. Dual Modulus Values
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