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TEA7091 Datasheet(PDF) 3 Page - STMicroelectronics |
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TEA7091 Datasheet(HTML) 3 Page - STMicroelectronics |
3 / 7 page PIN DESCRIPTIONS PQFP44 N o Pins PLCC44 N o Pins Names Functions 1 7 VLS Loudspeaker power supply. 2 8 VMC Unregulated microcontroller supply. 3 9 VL Line voltage. 4 10 VREFL Loudspeaker reference voltage. 5 11 LSIN Loudspeaker input. 6 12 LSSOF Loudspeaker softclipping time constatnt. 7 13 DTMF DTMF filter. 8 14 VRMC Stabilized microcontroller supply. 9 15 OSC Oscillator input. 10 16 RI/VI Ring indicator / Line current variation indicator. 11 17 RESET Microcontroller reset. 12 18 PON Power on output. 13 19 CLK Clock data input. 14 20 DATA Data Input. 15 21 SNSL Short line sidetone input. 16 22 SNLL Long line sidetone input. 17 23 ACFSL Anti-acoustic feedback and squelch peak voltage. 18 24 ACFFI Anti-acoustic feedback and squelch filter. 19 25 RECIN Receiving Input. 20 26 REOUT Receive output. 21 27 GTR Transmit gain adjustment. 22 28 HFIN Handsfree microphone input. 23 29 MIC1 Microphone input. 24 30 MIC2 Microphone input. 25 31 VREF Transmit and receive reference voltage (VCC/2). 26 32 VCC Transmit and receive power supply. 27 33 TSOFT Transmit soft-clipping time constant. 28 34 SOFTL Maximum AC signal (Softclipping threshold). 29 35 IREF Internal reference current. 30 36 VS Shunt regulator capacitor. 31 37 SLP DC mask slope. 32 38 GNDA Analog Ground (signal). 33 39 ILL Line current regulation start up. 34 40 ISL Line current regulation stop. 35 41 EAR+ Positive earphone output. 36 42 EAR– Negative earphone output. 37 43 GREC Receive gain adjustment. 38 44 VZP Switch mode power supply internal zener. 39 1 SWP Switch mode power supply output. 40 2 RSU Ring start up level. 41 3 RCO Ring capacitor optimization (output power). 42 4 N.C. Not Connected. 43 5 GNDP Power Ground. 44 6 LSOUT Loudspeaker Output. TEA7091 3/7 |
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