[Soekris] net5501 and GPIO
Ralph Becker-Szendy
ralph at lr.los-gatos.ca.us
Wed Jan 30 06:01:10 UTC 2008
On Tue, 29 Jan 2008, Poul-Henning Kamp wrote:
> Ahh, hang on, somebody misunderstood something.
>
> The PC87366 numbers it's gpio pins in octal: GPIO23 is bit 3 in the
> second group of GPIO pins.
Aarrgghh! I apologize for wasting everyones time with my confusion.
Here is the pine numbering of the GPIO port on the 5501 (and 4801),
with the IO port bit numbers in DECIMAL. This took me over an hour to
figure out (I waste my own time even more effectively). I agrees
perfectly with the 4801 manual, except the manual uses the
nomenclature from the 83766 chip, which is in OCTAL:
1 +3.3V 2 +5V
3 io16 4 io17
5 io18 6 io19
7 io20 8 io21
9 io22 10 io23
11 GND 12 io4
13 io5 14 GND
15 io11 16 io10
17 GND 18 rxd
19 txd 20 GND
Again, I'm sorry to spread confusion.
--
Ralph Becker-Szendy ralph at lr.los-gatos.ca.us (408)395-1435
735 Sunset Ridge Road; Los Gatos, CA 95033
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