82091AA Datasheet, PDF (168/204 Pages) Intel Corporation – ADVANCED INTEGRATED PERIPHERAL (AIP)

82091AA
11 3 Oscillator
The 24 MHz clock can be supplied either by a crystal (Figure 69) or a MOS level square wave All internal
timings are referenced to this clock or a scaled count that is data rate dependent The crystal oscillator must
be allowed to run for 10 ms after V_CC has reached 4 5V or exiting the POWERDOWN mode to guarantee that
it is stable
Crystal Specifications
Freq
24 MHz g 0 1%
Mode
Parallel Resonant
Fundamental Mode
Series Resistance ^k 40X
Shunt Capacitance ^k 5 pF
C1 C2
20 pF–25 pF
Figure 69 Crystal Connections
290486 – 69
290486 – 70
Figure 70 Oscillator Connections
168