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AS2522BQ Datasheet(PDF) 4 Page - ams AG |
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AS2522BQ Datasheet(HTML) 4 Page - ams AG |
4 / 20 page Data Sheet AS2522B austriamicrosystems Revision 3.4 Page 3 of 19 Pin # Symbol Function 22 VPP Loudspeaker Power Supply High power supply for the output driver stage 21 CM Converter Make Output This is an output for controlling the external switching converter. During ringing it converts the ring signal into a 4V supply voltage 27 xCS Chip Select Chip select input of the serial interface. Internal pull-up resistor ( 100kOhm ) 29 DI Data Input Data input of the serial interface. Internal pull-up resistor ( 100kOhm ) 30 CLK Clock Clock input of the serial interface. Internal pull-up resistor ( 100kOhm ) 28 DO Data Output Data output of the serial interface. If xCS=1 DO is in HI-Z state 24 23 LO1 LO2 Loudspeaker Output 1 and 2 Output pins for a 50 Ω loudspeaker 1 FT1 Analog input pin for connecting a capacitor for offset cancellation. 2 FT2 Analog input pin for connecting a capacitor for offset cancellation. 20 CBN Analog input pin for connecting a capacitor for background noise monitoring. 15 RECI Analog input for the handsfree receive path. Should be connected to RO via coupling capacitor. 16 RECV Analog input for receive voice switching path. 25 VSSA Power supply pin for LS1-LS2 output amplifier. 32 VSSD Voltage Source Source Digital Negative Digital Power Supply 26 VDDD Voltage Drain Drain Digital Positive Digital Power Supply |
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