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ADD: V-USB Circuit in README

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tmk 2011-02-25 22:46:13 +09:00
parent 258fd3c368
commit 1a7c3585ed
1 changed files with 24 additions and 0 deletions
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ps2_usb/README
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@ -74,6 +74,30 @@ Build for V-USB
4. program your V-USB controller.
V-USB Circuit
-------------
+---+ +---------------+
USB GND | | ATmega168 |
=== C3 | |
5V <-------+--------+---|Vcc,AVCC | PS/2
R1 | | ====
D- <----+--+-----R2-----|INT0 RXD|------->DATA
D+ <----|---+----R3-----|INT1 XCK|------->CLOCK
Z1 Z2 | | ->5V
GND<----+---+--+--+-----|GND | ->GND
| | | |
| C2-+--|XTAL1 |
| X1 | |
+--C3-+--|XTAL2 |
+---------------+
R1: 1.5K Ohm
R2,R3: 68 Ohm
Z1,Z2: Zenner 3.6V
C1,C2: 22pF
C3: 0.1uF
X1: Crystal 20MHz(16MHz/12MHz)
Keymap
------
You can change a keymap by editing code of keymap.c like following.