Description of the NMRA-DCC Point Decoder with PIC12CE519
The decoder has 5 output ports. With these ports can be controlled up to 5 coils. A pointing motor for a
switch has mostly 2 coils.
The programming of the output ports are not rocked science:
If you want to reprogram one port, please switch on the desired address on the central station
that it writes the address continuously to the rails and press the switch assigned to the port
on the decoder. These port is now programmed to the address on the central station, try it.
Timer for every port
cv515 timer for GP0
cv516 timer for GP1
cv517 timer for GP2
cv518 timer for GP4 & GP5
Zero for constant output
write =! 0xAA in cv519 resets the port adresses and timer!
Complete adress with F1-F8 calculated for GP0
511*8(NMRA) or 2044*2(IB)
Programming on main over adress of GP0 possible (adress = 9 adr. bits + 3 bits from f1-f8)
Wiring Diagram:
Board Layout:
