AT Keyboard/Mouse protocol
From HwB
(Difference between revisions)
m (PC Keyboard/Mouse protocol moved to AT Keyboard/Mouse protocol: PC might refer to IBM PC (Intel 8088). Which is another protocol. This is for IBM AT (Intel 80286) compatible computers. Which is all "PC" computers today.) |
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| Line 25: | Line 25: | ||
== Host to device == | == Host to device == | ||
[[Image:PCKeyboardMouse_2.svg]] | [[Image:PCKeyboardMouse_2.svg]] | ||
| + | |||
| + | == Voltage levels == | ||
| + | {| {{border}} | ||
| + | ! !! Min !! Max | ||
| + | |- | ||
| + | | Low (0) || 0.0 V || 0.7 V | ||
| + | |- | ||
| + | | High (1) || 2.4 V || 5.25 V | ||
| + | |} | ||
== Contributors == | == Contributors == | ||
Revision as of 08:56, 23 February 2007
Protocol used for:
Details:
- Protocol is bi-directional
- Clock frequency is 10-16.7 kHz
| Bit | Description | Comment |
|---|---|---|
| 1 | Start bit | Always 0 |
| 2-9 | 8 Data bits | LSB first |
| 10 | Parity bit | Odd parity |
| 11 | Stopp bit | Always 1 |
Contents |
Device to host
Host to device
Voltage levels
| Min | Max | |
|---|---|---|
| Low (0) | 0.0 V | 0.7 V |
| High (1) | 2.4 V | 5.25 V |