Kontron KTGM45-mITX - Manual (Page 28)

KTGM45 Users Guide
KTD-N0793-O Page 28
3.3 Keyboard and Mouse connectors
Attachment of a keyboard or PS/2 mouse adapter can be done through the stacked PS/2 mouse and
keyboard connector (MSE & KBD).
Both interfaces utilize open-drain signalling with on-board pull-up.
The PS/2 mouse and keyboard is supplied from SB5V when in standby mode in order to enable keyboard or
mouse activity to bring the system out from power saving states. The supply is provided through a 1.1A
resettable fuse.
3.3.1 MINI-DIN Keyboard and Mouse Connector (KBD)
Note Pull
U/D Ioh/Iol Type Signal
PIN Signal Type Ioh/Iol Pull
U/D Note
- - - NC 6 5 MSCLK IOD /14mA 2K7
- - PWR 5V/SB5V 4 3 GND PWR - -
- - - NC 2 1 MSDAT IOD /14mA 2K7
- - - NC 6 5 KBDCLK IOD /14mA 2K7
- - PWR 5V/SB5V 4 3 GND PWR - -
- - - NC 2 1 KBDDAT IOD /14mA 2K7
Signal Description – Keyboard & and mouse Connector (MSE & KBD), see below.
3.3.2 Keyboard and Mouse pinrow Connector (KBDMSE)
PIN Signal Type Ioh/Iol
Pull
U/D
Note
1 KBDCLK IOD /14mA 2K7
2 KBDDAT IOD /14mA 2K7
3 MSCLK IOD /14mA 2K7
4 MSDAT IOD /14mA 2K7
5 5V/SB5V PWR - -
6 GND PWR - -
Signal Description – Keyboard & and mouse Connector (KBDMSE).
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.
KDBCLK Bi-directional clock signal used to strobe data/commands from/to the PC-AT keyboard.
KBDDAT Bi-directional serial data line used to transfer data from or commands to the PC-AT keyboard.
Connector Definitions