AS2522B austriamicrosystems, AS2522B Datasheet
AS2522B
Specifications of AS2522B
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AS2522B Summary of contents
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... Telephone Line Interface and Speakerphone Circuit AS2522B Key Features Line/Speech circuit, DTMF dialer, FSK transmitter and - tone ringer on a 32-pin CMOS-IC Enhanced voice switching - Background noise monitoring - DTMF tone generator - FSK Transmitter V.23, BELL202, V.21, BELL 103 - Ringer tone programmable - Tx- and Rx-gain programmable ...
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... Data Sheet AS2522B Pin description Pin # Symbol ine Current Analog input for sensing the line current ine nput Analog input used for power extraction and line current sensing eceive nput Analog input for ac-separated receive signal STB ide one Analog input for side tone cancellation network ...
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... Data Sheet AS2522B Pin # Symbol 22 VPP Loudspeaker Power Supply High power supply for the output driver stage onverter This is an output for controlling the external switching converter. During ringing it converts the ring signal into a 4V supply voltage xCS hip elect Chip select input of the serial interface. Internal pull-up resistor ( 100kOhm ) ...
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... Data Sheet AS2522B Detailed Block Diagram Revision 3.4 Page ...
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... Data Sheet AS2522B Functional Description DC conditions The normal operating mode is from 15mA to 100mA. An operating mode with reduced performance is from 5mA to 15mA. In the line hold range from 0mA to 5mA the device power down mode. The DC characteristic is determined by the voltage at LI- pin and a 30 resistor between LI- and LS-pin ...
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... Data Sheet AS2522B LINE +14dB +8dB Offset Compress comp +3dB FT2 CTXoffset RO Offset Compress comp RECV RECI Speech Rx > Tx_atten X Tx_atten > Tx_atten > Rx YES RX-mode Vol max Vol default Revision 3.4 voice switching circuit TX_atten Voice Backgnd speech switching noise RX monitor Gmax = +9dB Gmin = -21dB … ...
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... Data Sheet AS2522B Serial Interface Registers The settings of the AS2522 are stored in 16 registers. Each register has 4 bit data width. Writing data into the AS2522 also causes the sending of the AS2522 status information on Pin D0. This information consists of the DC-current information (from the Line Loss Compensation circuit) and the status of the power-on reset circuit to test if AS2522 has already powered up ...
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... Data Sheet AS2522B Timing The data format for writing to a register has the following form: xCS CLK Note: The pins xCS,CLK,DI have internal pull-up resistors. Parameter Symbol CLK Pulse width HIGH t6 CLK Pulse width LOW t5 xCS to first falling CLK- t1 edge setup time ...
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... SOFTTX: Softclip DC/DC-Converter ON/OFF,Mask ldbr: Digital tone at RO ldbl: Digital tone at LO1/LO2 0...OFF, MASK: Mask function DC/DC: DC/DC-converter Revision 3.4 Single tone mode AS2522B ONLY AND FSK=1 (Addr 12): LOW-Group Data r1 r0 fLow f[3:0] Frequency 0 0 697Hz 0000 0 1 770Hz 0001 800Hz ...
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... FSK-mode, LLC[2], LI-Voltage AS2522B: FSK: Frequency select in single tone mode AS2522B ONLY FSK: 0 Single Tone frequencies are read from Addr Single Tone frequencies are read from Addr. 1: AS2522A FSK: For factory test only ! LIV: Voltage at pin LI LLC1 LLC0: Line loss compensation setting ...
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... Data Sheet AS2522B Electrical characteristics Electrical characteristics are measured with the Test Circuit application. Typical mean values will not be tested. Absolute maximum ratings Positive Supply Voltage Input Current Input Voltage (LS) Input Voltage (LI, CS) Input Voltage (STB, RI) Digital Input Voltage Electrostatic Discharge (HBM 1.5k -100pF) ...
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... Data Sheet AS2522B Transmit characteristics I =15mA f=800Hz, default settings unless other specified Line Symbol Parameter A Transmit Gain M1/2TX M1/ Transmit Gain M3/4TX M3/ Variation with frequency TX A Control range VRM12 M1/ Control range VRM34 M2/M4 LS THD Distortion V Soft Clip Level AGC1 M1/ Soft Clip Level ...
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... Data Sheet AS2522B Receive characteristics I =15mA f=800Hz, default settings unless other specified Line Symbol Parameter A Receive Gain Receive Gain LO12 LS LO1/LO2 A Variation with frequency RX A Control range VRRO Control range VRLS LS LS1/LS2 THD Distortion LS1/LS2 LS THD Distortion Unwanted Freq. Cmp. UFC ...
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... Data Sheet AS2522B DTMF characteristics I =15mA w/o operation of any additional external circuitry, unless other specified, default settings Line Symbol Parameter V Tone level low group MFlow DTMF level range range low group Preemphasis L-H L-H UFC Unwanted frequency components f Frequency deviation V Comfort tone handset ...
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... Data Sheet AS2522B Miscellaneous Symbol Parameter V Pacifier level at RO PARO V Pacifier level at LS1/2 PALS Test circuit 10V 600 Iline Vac Revision 3.4 Conditions Min RL = 150 Ohm Ohm 300 1uF 7 STB BC327 VSSD 9 VSS AS2522A BC327 VPP 25 VSSA 21 CM 5V1 Type Max ...
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... Data Sheet AS2522B Typical application Revision 3.4 Page ...
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... Data Sheet AS2522B Bonding Diagram 32 Lead 7x7mm TQFP dimensions Revision 3.4 Page ...
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... Data Sheet AS2522B Packaging 32-pin plastic TQFP (suffix Q) For exact mechanical package dimensions please see austriamicrosystems packaging information. AG Pin-out, Marking FT1 1 FT2 YYWWAAA M3 5 AS2522X M1 6 STB year of production WW calendar week of production AAA austriamicrosystems assembly revision Revision 3.4 Ordering Information Number ...
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... Data Sheet AS2522B Contact Headquarters austriamicrosystems AG Communications Business Unit A 8141 Schloss Premstätten, Austria T. +43 (0) 3136 500 0 F. +43 (0) 3136 525 01 www.austriamicrosystems.com Sales Offices Germany austriamicrosystems Germany GmbH Tegernseer Landstrasse 85 D-81539 München, Germany Phone: +49/89/693643-0 Fax: +49/89/693643-66 France austriamicrosystems France S.a.r.l. ...