Schematic for SERVID
$Id: SCHEMATIC,v 1.4 2001/01/04 23:52:55 eric Exp $

Copyright 2001 Richard Ottosen


                          +5V
                           |
           +---------------+
           |               |
        0.1 uF             |
           |               |                                         1.25V p-p
           |       ----------------                                  Video into
           V      |                |                                 75 ohms
                  |  Ubicom    /   |
                  |  SX18AC   |  7 |--- 220 ohm ---+--------+--- 15 ohm --->
                  |           |    |               |        |
            +5V --| MCLR      |    |             120 ohm  120 ohm      +--->
                  |           |    |               |        |          |
 ----------       |           |  6 |--- 220 ohm ---+        |          |
|42.954545 |      |           |    |               |        V	       V
|   MHz    |------| OSC1      |    |            120 ohm
|Oscillator|      |           |    |               |
 ----------   NC--| OSC2      |  5 |--- 220 ohm ---+
                  |           |    |               |
                  |           |    |            120 ohm
           +------| RTCC      |    |               |
           |   	  |          /   4 |--- 220 ohm ---+
           V      |         |      |               |
                  | Port B <       |            120 ohm
                  |         |      |               |
              NC--| PA3      \   3 |--- 220 ohm ---+
                  |           |    |               |
              NC--| PA2       |    |            120 ohm
                  |           |    |               |
           +------| PA1       |  2 |--- 220 ohm ---+
           |      |           |    |               |
          --      |           |    |            120 ohm
    piezo [] )))  |           |    |               |
          --      |           |  1 |--- 220 ohm ---+
           |      |           |    |               |
           |      |           |    |            120 ohm
           V      |           |    |               |
EIA-232           |           |  0 |--- 220 ohm ---+
Input             |            \   |               |
<-----+--- 33K ---| PA0            |            120 ohm
      |           |                |               |
    180K           ----------------                |
      |                    |                    120 ohm
<-----+                    |                       |
      |                    |                       |
      V                    V                       V