MAX7219 LC-MTC Schematic check

[d2k]

Hi...

I've got this schem done for the beats/smpte display on the LC/MC using 2 MAX7219's (as suggested on a thread from before as i remember)...

Is it okay? If all is good I can test as soon as :)

Best

D

[TK.]

I already wrote this in a PM, but it could be interesting for everybody:

The 7219 gives you no advantage compared to the already existing solution (http://www.ucapps.de/mios/leddigits_16.pdf) which will be integrated into the MIDIbox LC sooner or later.

The 7219 is something like a serial 16 bit register with command interface. Two of them allocate 32 bits in a serial chain, and this is exactly the same number which is allocated by the leddigits_16 module.

But the driver for a 7219 is totally different - and thats an disadvantage.

So, the use of a 7219 makes only sense if enough pins are free to drive this serial chain seperately. And this isn't the case for MIDIbox LC (assumed that a KS0108 display is connected).

Btw.: the driver is similar to that used by mbhp_aout

Best Regards, Thorsten.