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Si53xx-RM
16 Rev. 0.5
2. Narrowband vs. Wideband Overview
The narrowband (NB) devices offer a number of features and capabilities that are not available with the wideband
(WB) devices, as outlined in the below list:
Broader set of frequency plans due to more divisor options
Hitless switching between input clocks
Lower minimum input clock frequency
Lower loop bandwidth
Digital Hold (reference-based holdover instead of VCO freeze)
FRAMESYNC realignment
CLAT and FLAT (input to output skew adjust)
INC and DEC pins
PLL Loss of Lock status indicator
FOS is not supported.