PSTN system application circuit of ISD61S00

The following is the circuit diagram of [IST61S00 PSTN system application circuit]

The ISD61S00 is a feature chip of the PSTN telephony system. The device includes audio storage and data-based communication functions, including DTMF detection and generation, 75-1200 baud FSK modem function, CAS and CPT detection for ringtone detection. Audio path energy The line side and microphone side interfaces of the PSTN system include full-duplex and half-duplex and line echo cancellation. The digital audio interface can be configured in I2S or PCM mode to accommodate digital serial audio communication.

Main features of ISD61S00:




Figure 1. ISD61S00 block diagram

Figure 2. ISD61S00 application circuit diagram (1)

Figure 3. ISD61S00 application circuit diagram (2)

Figure 4. ISD61S00 application circuit diagram (3)

(Editor: Circuit Diagram)