886LCD-M Family
KTD-00474-U
Public User Manual
Date: 2010-06-22 Page
26 of 81
4.3 Keyboard and PS/2 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 signaling with on-board pull-up.
The PS/2 mouse and keyboard is supplied from 5V_STB 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
resetable fuse.
4.3.1 Stacked MINI-DIN keyboard and mouse Connector (MSE & KBD)
Note
Pull
U/D
Ioh/Iol
Type
Signal
PIN
Signal
Type
Ioh/Iol
Pull
U/D
Note
-
-
-
NC 6
5
MSCLK
IOC
TBD
4K7
-
-
PWR
5V/SB5V 4 3
GND
PWR
-
-
-
-
-
NC
2
1
MSDAT
IOC
TBD
4K7
-
NC 6
5
KBDCLK
IOC
TBD
4K7
-
-
PWR
5V/SB5V 4 3
GND
PWR
-
-
-
-
-
NC
2
1
KBDDAT
IOC
TBD
4K7
Signal Description – Keyboard & and mouse Connector (MSE & KBD), see below.
4.3.2 keyboard and mouse pin-row Connector (KBDMSE)
PIN
Signal
Type
Ioh/Iol
Pull
U/D
Note
1
KBDCLK
IOC
TBD
4K7
2
KBDDAT
IOC
TBD
4K7
3
MSCLK
IOC
TBD
4K7
4
MSDAT
IOC
TBD
4K7
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.
