GENERAL DESCRIPTION
The SA2532 is a CMOS integrated circuit that contains all the functions needed to form a high performance electronic telephone. The device incorporates LD/MF dialling, melody generation, ring frequency discrimination and a high quality speech circuit. A RAM is on chip for a 31 digit last number redial. The sliding cursor procedure makes Last Number Redial easy behind a PABX.

FEATURES
Speech circuit, LD/MF Dialler and Tone Ringer on one 28 pin CMOS chip
Soft clip to avoid harsh distortion
Line Loss Compensation selectable by pin option
Power down mode
Versatile applications for different PTT demands
31 digit last number redial
Sliding Cursor protocol with comparison
2 Flash keys, 100 ms and 280 ms (option 600 ms)
Pause key for 3 sec Auto Pause or Wait Function
Ring frequency discrimination
Operating range from 13 to 100 mA (down to 5 mA with reduced performance)
Low noise (max. -72dBmp)
Real or Complex impedance on chip programmable
LD/MF switchable dialling
On chip MF filter (CEPT CS 203 compatible)
3-tone melody generator with selectablerepetition rates