73M1903 MODEM ANALOG FRONT END DEMO BOARD User’s Manual
Revision 1.2
7 of 32
© Copyright 2005 TERIDIAN Semiconductor Corporation
1 GETTING STARTED
1.1 GENERAL
The TERIDIAN Semiconductor Corp. (TSC) 73M1903 Demo Board is a Modem Analog Front End
demonstration board with on board DAA for evaluating the 73M1903 device that can support up to
V.90/V.92 modulation and demodulation on high-performance DSP or CPU systems available in the
market. It incorporates a 73M1903 integrated circuit, a low speed U.S., high speed U.S., or CTR-21
compatible DAA telephone network interface. The Demo Board allows the evaluation of the 73M1903
Modem Analog Front End chip for universal modem and Fax applications, interfacing to DSPs or other
high performance processors. It is not intended for use with general-purpose controllers.
1.2 SAFETY AND ESD NOTES
THE 73M1903 DEMO BOARD IS ESD SENSITIVE! ESD PRECAUTIONS SHOULD
BE TAKEN WHEN HANDLING THE DEMO BOARD!
1.3 DEMO BOARD LOOK
The TERIDIAN Semiconductor Corporation (TSC) 73M1903 Demo Board shown in Figure 1-2 has a 20-
pin right angle connector to plug on to a target DSP or CPU system. It has a 3.3V power receptacle for
powering on board circuits from an external power supply or can be jumpered to receive power form the
host connector.
1
