hardware.txt@ 39e523d

main

Last change on this file since 39e523d was 39e523d, checked in by Adrien Destugues <pulkomandy@…>, 10 years ago

Update docs now that I have things working.

git-svn-id: svn://pulkomandy.tk/avrstuff@102 c6672c3c-f6b6-47f9-9001-1fd6b12fecbe

File size: 866 bytes

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1	XTK: Hardware description
2	=========================
3
4	Nothing too fancy here. We run an ATMega48P (but any other AVR chip would do)
5	on a 16MHz crystal (not really needed, but it was there on the prototyping
6	board).
7
8	The PS/2 keyboard interface is handled by my ps/2 keyboard library, see there
9	for more information.
10
11	The XT is connected using a DIN connector on the keyboard port. We get our
12	power supply from there (and also power the keyboard). The clock signal is
13	wired on PB2 and the data line on PB1. A debug led is available on PD6, but
14	this will probably be removed once everything is working as expected.
15
16	Later on I will probably move to an ATTiny2313 (because I have one available)
17	or some chip with an even lower pin count. This will allow making the interface
18	smaller. Ideally it would be roughly the size of the DIN connector and could be
19	fitted there.

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