IDT / ICS FREQUENCY GENERATOR/JITTER ATTENUATION
5
ICS813076CYI REV. A JULY 8, 2008
ICS813076I
FREQUENCY GENERATOR/JITTER ATTENUATION FOR WIRELESS INFRASTRUCTURE
TABLE 3B. VCXO PRE-DIVIDER (P) CONFIGURATION TABLE
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TABLE 3C. VCXO MULTIPLIER (MV-DIVIDER) CONFIGURATION TABLE
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The VCXO pre-divider (P) down-scales the input reference
frequency f
REF and enables the use of the ICS813076I at a variety
of input frequencies. P_SEL and MV_SEL must be set to match
the VCXO frequency: f
REF ÷ P = fVCXO ÷ MV. For instance, at the
nominal VCXO frequency of 30.72MHz and if MV equals two, the
input frequency must be an integer multiple of 15.36MHz.
TABLE 3F. PLL OUTPUT-DIVIDER (NA, NB, NC) CONFIGURATION TABLE
TABLE 3E. INPUT REFERENCE CLOCK MULTIPLEXER
CONFIGURATION TABLE
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TABLE 3D. FEMTOCLOCK FEEDBACK DIVIDER (MF)
CONFIGURATION TABLE
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TABLE 3G. PLL BYPASS CONFIGURATION TABLE
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