AS2523 austriamicrosystems, AS2523 Datasheet
AS2523
Specifications of AS2523
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AS2523 Summary of contents
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... Rx-volume control for handset and handsfree operation. It shall act as an a/b- line powered device, which is controlled by a CPU via a serial interface on AS2523 or a standard dialler via a parallel interface on AS2524 and AS2524B. Applications Enhanced handsfree feature phones with CallerID and extended displays ...
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... Data Sheet AS2523, AS2524, AS2524B Pin description Pin # Symbol ine Current ense Input 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 9 STB ...
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... Data Sheet AS2523, AS2524, AS2524B Pin # Symbol 25 xCS C S hip elect on AS2523 Chip select input of the serial interface. Internal pull-up resistor ( 100kOhm ) /xMUTE Mute transmit-, receive- path and activate tone path on AS2524 and AS2524B ata nput on AS2523 Data input of the serial interface. Internal pull-up resistor ( 100kOhm ) ...
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... Data Sheet AS2523, AS2524, AS2524B Detailed Block Diagram Revision 1.13 austriamicrosystems Page ...
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... Revision 1.13 The gain of the M3/M4 → set to +46dB. This gain can be changed by programming from +39dB to +54dB in 1dB steps on AS2523. The input is differential with an impedance of 10kΩ. The soft clip circuit limits the output voltage Receive path The gain of the LS → RO receive path is set to +7.5dB. ...
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... Data Sheet AS2523, AS2524, AS2524B LINE +14dB +8dB ~ +17dB Compress +3dB TXO TXV RO Compress RECV RECI Speech Mode Rx > Tx_atten X Receive Tx_atten > Idle Tx_atten > Rx YES Transmit RX-mode Vol max Vol default Revision 1.13 Gmax = +9dB Gmin = -21dB … -40dB (Vol) ...
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... Data Sheet AS2523, AS2524, AS2524B Typical Characteristics of Line Loss Compensation (AS2523, AS2524B only) The line-loss-compensation is programmable at the AS2523, not activated at the AS2524 and LLC high (45mA-75mA) activated at the AS2524B. (dB) Tx Gain 800 600Ω LINE -10 dBm Figure 1 Typical Tx Gain Characteristics Line Loss Compensation ...
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... Data Sheet AS2523, AS2524, AS2524B Serial Interface on AS2523 Registers The settings of the AS2523 are stored in 16 registers. Each register has 4 bit data width. 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. ...
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... Data Sheet AS2523, AS2524, AS2524B Serial interface Registers The following table shows the content of the 16 control registers. Address Data Control registers AS2523 Nop Conf-Tone: LIV: Voltage at pin LI LLC1 LLC0: Line loss compensation setting 0 0 20mA-50mA Line loss compensation 1 0 45-75mA Line loss compensation ...
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... Data Sheet AS2523, AS2524, AS2524B Programming Guidelines for the AS2523 The AS2523 is programmed by means of a serial 8-bit shift register. MSB is clocked in first, LSB last. The first four bits (7,6,5,4) are the addresses of the registers, the last four bits (3,2,1,0) are the data bits. ...
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... Data Sheet AS2523, AS2524, AS2524B Parallel Interface on AS2524 and AS2524B Input Signal on Pin XPD xMute Power down Power down Power down Power down Tone mode Tone mode Handset mode Handsfree mode Power down mode For low power consumption the analog part is turned off during activated power down mode. The Power down mode is used during Flash and Pulse dialing and for On-hook operation ...
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... Tone TX-Gain +14dB Confidence tone -36dB@Ro –15dB@Lo level relative to Pin LS Loudhearing AS2524 and AS2524B (feature only available as DIE) Speech mode is Loudhearing (M3-M4, RO active; LO activated). Loudhearing can be activated via a bond-option (see document “AS2523/24 Delivery as Dice”). Parameter LI Voltage LLC TX-Gain RX-Gain Tone Slow_rec ...
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... Data Sheet AS2523, AS2524, AS2524B DC characteristics I =15mA w/o operation of any additional external Line circuitry, unless other specified Symbol Parameter I Operating Current Speech Mode DDS I Operating Current Handsfree Mode DDH V Line Voltage LIVolt=0 15mA<=ILINE<=100mA LI Line Voltage LIVolt=1 I Output Current, Sink ...
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... Data Sheet AS2523, AS2524, AS2524B Symbol Parameter Z Input Impedance IN-M1/2 M1/M2 Z Input Impedance IN-M3/4 M3/M4 V Input Voltage Range INmax M1/2 - M3/4 V Noise Output Voltage Mute Attenuation MUTE Receive characteristics I =15mA f=800Hz, default settings unless other specified Line Symbol Parameter A Receive Gain ...
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... Data Sheet AS2523, AS2524, AS2524B Symbol Parameter V Noise Output Voltage Gain = 7.5dB Z Input Imp. RI IN-RI Input Voltage Range RI V INmax Z Input Imp. STB IN-STB Input Volt. Range STB V INmax ST Side tone V RL Return Loss Z Temp. Variation Z Δ AC/°C Test circuit D1 10V ...
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... Data Sheet AS2523, AS2524, AS2524B Typical application AS2523 Revision 1.13 austriamicrosystems Page ...
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... Data Sheet AS2523, AS2524, AS2524B Typical application AS2524 and AS2524B Revision 1.13 austriamicrosystems Page ...
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... Data Sheet AS2523, AS2524, AS2524B Packaging 28-pin plastic SOIC For exact mechanical package dimensions please see austriamicrosystems Pin-out, Marking CBN 1 28 TONE CLK / HFI TXO xPD TXV 4 25 xCS/ xMUTE RECV RECI AGND VSS 11 18 VDD year of production WW calendar week of production ...
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... Data Sheet AS2523, AS2524, AS2524B Copyright Copyright © 2002-2007, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks of their respective companies. ...