73M1903 MODEM ANALOG FRONT END DEMO BOARD User’s Manual
Revision 1.2
17 of 32
© Copyright 2005 TERIDIAN Semiconductor Corporation
3 HARDWARE DESCRIPTION
3.1 BOARD SETTING: JUMPERS AND CONNECTORS
Figure 3-1 shows the connectors and jumpers available on 73M1903 Demo Boards. JS1 is the
main connector for communicating with a host processor or DSP board. The pins of this interface
connector are configurable by 0 Ohm resistors. R26 through R47 are option-setting resistors.
Tables 3-2 and 3-3 describe the details of the jumper settings and 0 Ohm resistor population
options. J5 is a modular connector for phone line connection and J4 is for power connection from
the main board or an external power supply.
J5
JS1
JP2
J
2
J
1
J
P
1
J
P
3
J4
Jumper Resistors
Figure 3-1: 73M1903 Demo board connectors and Jumper locations
23