Base-band ISI for tap Cordless Telephones(CTl, CT1+)

Features
- Meets to the specification of the europian cordless telephones (СТ1.СТЮ
- Built-in voice filter for cordless telephone, MSK MODEM (2400bps),COMPANDOR, and scrambler circuit
- Low / wide operation voltage range (1.9 V to 5.5V)
- Built-in COMPANDOR output transient response circuit and time constant circuit
- No external component is needed for COMPANDOR
- Built-in buffer amplifier for ceramic receiver driving.
- Built-in electronic volume for microphone sensitivity and modulator/demodulator sensitivity
- Receiving level switchable in 8 steps (-12 to +9dB)
- Built-in Zi uting function for voice transmitting and receiving
- External adjustment for the limiter level
- Built-in amplifier for transmission and reception gain adjustment
- Low power CMOS and power-down function
- Built-in 3.58MHz oscillator circuit
- Scrambler circuit with frequency inversion. Two inversion frequencies can be selected.
- Bypassing the scrambler circuit available
- Built-in frame detection function for the MSK demodulator
- Control register and MSK MODEM data buffer controlled by serial interface
- Few external component is necessary resulting cost reduction and small set size.
- Package: 24 pin VSOP