Kontron mITX-DNV - PS;2 Keyboard and Mouse Wafer (CN21); Table 33: Pin Assignment CN21; Table 34: Signal Description; Figure 18: PS;2 Keyboard; Mouse Wafer CN21

mITX-DNV - User Guide, Rev. 1.0
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7.8. PS/2 Keyboard and Mouse Wafer (CN21)
Attachment of a PS/2 keyboard / mouse can be done through the pinrow connector CN21. Both interfaces utilize
open-drain signalling with on-board pull-up.
Figure 18: PS/2 Keyboard / Mouse Wafer CN21
Table 33: Pin Assignment CN21
Pin Signal Note
1 MSCLK
2 VCC
3 MSDAT
4 KBDAT
5 GND
6 KBCLK
Table 34: Signal Description
Signal Description
MSCLK Bi-directional clock signal used to strobe data/commands from/to the PS/2 mouse.
MSDAT Bi-directional serial data line used to transfer data from or commands to the PS/2 mouse.
KBCLK Bi-directional clock signal used to strobe data/commands from/to the PC-AT keyboard.
KBDAT Bi-directional serial data line used to transfer data from or commands to the PC-AT keyboard.