[time-nuts] 10 MHz -> 16 MHz clock multiplier

[Ed Breya]

Actually, I was referring to an RC and Diode network in anticipation of 
the possible need for more signal shaping flexibility, depending on the 
signals and circuitry. The built-in oscillators are usually self-biased 
CMOS inverters intended to go with crystals, and usually a couple of 
small phase shift caps to ground. If you inject the right amount of 
reference frequency at the input, the oscillator should sync up. Since 
it's for a fixed frequency, the required lock range can be quite small - 
it needs to be enough to compensate for drift in the resonator and 
circuits - so the injection level probably can be small. Since the 
oscillator input has plenty of gain, and the reference is likely a very 
low impedance, I think a fairly high impedance passive coupling network 
to link the two should suffice, without any extra active circuitry.

Ed