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ML7020 Datasheet

  • ML7020

  • 1200 bps MODEM for Remote Control Systems

  • 127.38KB

  • 19頁

  • OKI

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FEDL7020-02
Semiconductor
1
ML7020
1200 bps MODEM for Remote Control Systems
This version: Nov. 2000
Previous version: Feb. 2000
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
鈥?/div>
Single 5 V power supply operation (V
DD
: 4.5 to 5.5 V)
鈥?/div>
Low power consumption: During operation: 5 mA typ.
During the power down mode: 7
碌A
typ.
鈥?/div>
Built-in 1200 bps modem conforming to ITU-T V.23 recommendations
鈥?/div>
Built-in DTMF signal generator with a switchable 6-dB attenuator
鈥?/div>
Built-in DTMF detector (the input can be selected from either the line or the terminal)
鈥?/div>
Built-in call progress tone generator. The output frequency can be selected from 400 Hz and 800 Hz.
鈥?/div>
Built-in call progress tone detector
鈥?/div>
Three analog input systems (switchable)
鈥?/div>
Analog output for the line is of the differential type and can drive a 600
鈩?/div>
line transformer.
鈥?/div>
Analog output for the terminal is of the single-ended type and can drive a 1.2 k鈩?load.
鈥?/div>
Built-in switch for selecting the 600
鈩?/div>
termination
鈥?/div>
4-Bit processor interface
鈥?/div>
Built-in oscillator circuit for a 3.579545 MHz crystal
鈥?/div>
Package: 32-Pin plastic SSOP (SSOP32-P-430-1.00-K) (Product name: ML7020MB)
1/19

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