FX643 Consumer Microcircuits Limited, FX643 Datasheet - Page 12

• Manufacturer Part Number: FX643
• Description: Call Progress Tone Detector
• Manufacturer: Consumer Microcircuits Limited

Call Progress Tone Detector
1.7.1
Note 1:
1996 Consumer Microcircuits Limited
Electrical Performance (continued)
Figure 5 Timing Diagram: Call Progress Tone(s) to Non Call Progress Signal
DETECT3 is "1" only when the Call Progress Signal, or a Non Call Progress Signal, is a single
frequency tone.
Figure 6 Timing Diagram: Special Information Tones
12
D/643/4
FX643