Back Panel Connectors; Ps/2 Keyboard And Mouse - Beckhoff CB1050 Manual

Back Panel Connectors

3.2 Back Panel Connectors
The board complies with the ATX form factor and thus honours the "I/O Connector Area" as defined in the
ATX specification. A range of standard connectors are available: You can connect PS/2 keyboard and
mouse, printer, display, speakers, microphone, LAN etc. If the board is mounted in a normal ATX compliant
case these connectors are located on the back side of the case. In the following sections we will discuss
each connector, going from left to right (looking onto the rear side of a desktop case) or from top to bottom
(tower case).

3.2.1 PS/2 Keyboard and Mouse

PS/2 mice and keyboards are connected via standard mini-DIN connectors. If you want to use the keyboard
or mouse to wake up the board from standby or suspend mode you have to activate this functionality by
adjusting the KBPWR jumper settings (page 48). With this jumper you can switch from normal power supply
(VCC) to standby power supply (SVCC) for keyboard/mouse. Some relevant settings will have to be
adjusted in BIOS setup.
Pinout PS/2 mouse:
Description
mouse data
ground
mouse clock
Pinout PS/2 keyboard:
Description
keyboard data
ground
keyboard clock
Beckhoff New Automation Technology CB1050
Name Pin
MDAT B1
GND B3
MCLK B5
Name Pin
KDAT A1
GND A3
KCLK A5
Name
B2 N/C
B4 (S)VCC
B6 N/C
Name
A2 MDAT
A4 (S)VCC
A6 MCLK
Chapter: Connectors
Description
reserved
5 volt supply
reserved
Description
mouse data
5 volt supply
mouse clock
page 21