2 Jul
2012
2 Jul
'12
11:29 a.m.
On 1 Jul 2012 at 20:45, Tony Duell wrote:
Not particualrly, for3 main reasons :
1) From what you say in another message, this came fro ma standard
application note, and I can look that up if I ever need it.
2) I don't read Verilog (or any other hardwre description language). Now,
if you send me a schematic doing the whole thing with 74xx ICs, I'll make
sense of it :-) [1]
3) It's irrelevant anyway. I don;t dispute you can make an itnerfce
between SPI and I2C. Heck, I've got an ES232 to I2C (as a master on the
I2C) interfce here. But you are stil ltalking I2C to the teletext IC,
which is not suprising. You cna't sensibly do anythign else...
[1] I wonder what the bneast way to do thsis would be? Off the top of my
head, soem kind of microdoed ssytem or complex stat emachine (which at
this level are the same thing, of course) would be my first guess.
-tony
And now let me see you access a Philips SAA5243
teletext IC (alos
useful for a 40*25 text video display) using SPI at any speed :-)
Do you want me to send you the Verilog for the CPLD in the middle?