Ps/2 Keyboard And Mouse Wafer (Cn21); Table 33: Pin Assignment Cn21; Table 34: Signal Description; Figure 18: Ps/2 Keyboard / Mouse Wafer Cn21 - Kontron mITX-DNV User Manual

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
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.
www.kontron.com
Note
mITX-DNV - User Guide, Rev. 1.0
// 41