參數(shù)資料
型號(hào)： U3810BM
英文描述： Multi Standard Feature Phone Integrated Circuit
中文描述： 多標(biāo)準(zhǔn)功能手機(jī)集成電路
文件頁(yè)數(shù)： 1/31頁(yè)
文件大?。?/td> 497K
代理商： U3810BM
TELEFUNKEN Semiconductors
U3810BM
Rev. A1: 19.01.1996
1 (31)
Multi Standard Feature Phone Integrated Circuit
Description
The U3810BM multi-standard feature phone circuit is
designed to be used with a microcontroller using a 2-wire
serial bus. It performs all speech and line interface
functions required in an electronic telephone set: the
ringing function with switching regulator and melody
generator, the DTMF dialling, the loudhearing with
antilarsen and antidistortion systems, a power supply, a
clock and a reset for the microcontroller. Transmit, receive
and loudhearing gains control / AGC range / DTMF
frequencies, pre-emphasis and level / melody generator,
and mutes are programmable through the serial bus.
Block diagramm
Speech
circuit
Tone
ringer
LH
DTMF
dialer
MC
with
EEPROM
93 7600 e
S
Loudhearing
and
Tone ringing
Figure 1
Applications
Feature phones
Answering machines
Fax machines
Benefits
Complete system integration of analog signal
processing and digital control circuitry
One IC for various PTT standards, e.g. programmable
specification via C
Only three low-cost transducers needed (instead of
four)
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