RFX144V24-S23 and RFX96V24-S23 Modem Designer’s Guide
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Figure 9-25. PPS and PPR Frame Structure.................................................................................................................... 9-28
Figure 9-26. Signal Recognition Algorithm in High Speed Mode ....................................................................................... 9-30
Figure 9-27. FSK Signal Detection Algorithm in Voice Mode ............................................................................................ 9-31
Figure 9-28. CNG Detection (1100 Hz) in Voice Mode ..................................................................................................... 9-32
Figure 9-29. Example V.17 Short Train Time Line............................................................................................................ 9-33
Figure 10-1. DAA Circuit Supporting CND........................................................................................................................ 10-2
Figure 10-2. Caller ID Example Flowchart........................................................................................................................ 10-4
Figure 11-1. High Speed and V.21 Receive Signal Path................................................................................................... 11-2
Figure 11-2. High Speed and V.21 Transmit Signal Path.................................................................................................. 11-3
Figure 11-3. PDE Block Diagram ..................................................................................................................................... 11-3
Figure 11-4. PDE Response............................................................................................................................................ 11-4
Figure 11-5. Digital Cable Equalizer Frequency Response ............................................................................................... 11-5
Figure 11-6. Receive Path Frequency Response without HPF ......................................................................................... 11-6
Figure 11-7. Receive Path Frequency Response with HPF .............................................................................................. 11-7
Figure 13-1. Typical Bit Error Rate (BER) Curves ............................................................................................................ 13-3
Figure 14-1. Recommended Modem/Speakerphone Interface Circuit............................................................................... 14-2
Figure 14-2. Typical Line Interface Circuit........................................................................................................................ 14-3
Figure 14-3. Typical Interface to External Hybrid ............................................................................................................. 14-3
Figure 14-4. Typical Microphone Circuit........................................................................................................................... 14-4
Figure 14-5. Typical Speaker Circuit ................................................................................................................................ 14-4
Figure 15-1. 100-Pin PQFP Dimensions .......................................................................................................................... 15-1
Figure 15-2. 28-Pin PLCC Dimensions ............................................................................................................................ 15-2
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