AMBE-2000™ Vocoder Chip

User’s Manual Version 3.0

page 15

Confidential Proprietary, Subject to Change

Figure 3-C X2/CLKIN and X1 with TTL Clock Source

AMBE-2000

X2/CLKIN (pin 68)

X1 (pin 67)

16.384 MHz

TTL/CMOS Clock

Source

Unconnected

3.4.2 Crystal Oscillator

The Crystal Oscillator option is selected with CLOCK_MODE pin set to a high level. To use the crystal oscillator, connect the

crystal across X2/CLKIN and X1 along with one external capacitor from each of these pins to ground. Recommended values

for C1 and C2 is 10 pF.

Figure 3-D X2/CLKIN and X1 with Crystal Oscillator

AMBE-2000

X2/CLKIN (pin 68)

X1 (pin 67)

16.384 MHz

C1 = 10 pF

C2 = 10 pF