ML7020中文資料沖電線數(shù)據(jù)手冊(cè)PDF規(guī)格書

GENERAL DESCRIPTION

The ML7020 is a 1200 bps modem LSI developed for remote control systems. The functions incorporated are those of a 1200 bps FSK modem conforming to ITU-T Recommendations V.23, DTMF signal generation and detection, call progress tone (CPT) generation and detection. Each functional block can be controlled via a 4-bit processor interface.

FEATURES

? Single 5 V power supply operation (VDD: 4.5 to 5.5 V)

? Low power consumption: During operation: 5 mA typ. During the power down mode: 7 μA typ.

? Built-in 1200 bps modem conforming to ITU-T V.23 recommendations

? Built-in DTMF signal generator with a switchable 6-dB attenuator

? Built-in DTMF detector (the input can be selected from either the line or the terminal)

? Built-in call progress tone generator. The output frequency can be selected from 400 Hz and 800 Hz.

? Built-in call progress tone detector

? Three analog input systems (switchable)

? Analog output for the line is of the differential type and can drive a 600 ? line transformer.

? Analog output for the terminal is of the single-ended type and can drive a 1.2 k? load.

? Built-in switch for selecting the 600 ? termination

? 4-Bit processor interface

? Built-in oscillator circuit for a 3.579545 MHz crystal

? Package: 32-Pin plastic SSOP (SSOP32-P-430-1.00-K) (Product name: ML7020MB)