[time-nuts] FE-5680A Schematics (v0.1)

[Elio Corbolante]

at the following address:
<
http://www.rhodiatoce.com/pics/time-nuts/FE-5680A/FE-5680A_schematics_v0.1.pdf
>
you will find the 0.1 release of the FE-5680A schematics.

New additions:
- pinout of the unpopulated (24 pin) connector (J9) behind the DB9
- connections between CPU/MAX3232 and the *TWO* serial ports!!!
- component values of the 10MHz filter + option on PCB to output a square
10MHz wave on DB9
- connections between CPU and MAX1246 (A/D converter)
- connections between XC9572 and MAX392 (quad analog switch)
- unknown pins marked as '?'

As you can see, it seems FE-5680A fully supports 2 serial ports:
one on DB9 and the other one on the unpopulated connector (J9) behind DB9.

Any comments/suggestions are welcome.

.      ciao
_        Elio.