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一、功能 LSD98358A为针对单一的绳路1拖8小型交换机专用集成电路。内含用户电路输入检测、输出控制接口,针对8870方便的信号接口、串行EEPROM的数据接口。以及对振铃、音乐等外电路的高低触发控制,来完成直接呼入和直接呼出,实现一条外线输入、八条内线输出等整个交换过程的自动控制。图1是IC内部功能电路方框图。
First, the function LSD98358A for a single rope drag 1 8 small switch ASIC. User circuit input detection, output control interface, for 8870 convenient signal interface, serial EEPROM data interface. As well as ringing, music and other high and low trigger control circuit to complete the direct call-in and direct exhaled to achieve an external input, eight internal output of the entire exchange process of automatic control. Figure 1 is a functional block diagram of the internal IC.