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U3810BM 数据表(PDF) 1 Page - TEMIC Semiconductors |
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U3810BM 数据表(HTML) 1 Page - TEMIC Semiconductors |
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1 / 31 page  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 Loudhearing and Tone ringing Figure 1 Applications D Feature phones D Answering machines D Fax machines Benefits D Complete system integration of analog signal processing and digital control circuitry D One IC for various PTT standards, e.g. programmable specification via mC D Only three low-cost transducers needed (instead of four) |
类似零件编号 - U3810BM |
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类似说明 - U3810BM |
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