System Architecture—IP2022 User’s Manual 60 www.ubicom.com Figure  2-15  shows  the  connections  for  attaching  an  external
ceramic  resonator  to  the  OSC  oscillator.  The  frequency  of  the
resonator must be between 1 MHz and 6 MHz. The value of the
external capacitors C1 and C2 is 5 pF. The RTCLK oscillator may
not be used with an external ceramic resonator. Figure 2-15  Ceramic Resonator Connection C1 515-039.eps C2   Ceramic
Resonator IP2022 OSC1 OSC2 XTAL