Kontron KTUS15-mITX - 1.1 Basic - Manual (Page 28)

KTD-00774-G KTUS15/mITX Page 28 of 84
4.5.3 LVDS Flat Panel Connector (LVDS)
Note Type Signal PIN Signal Type Note
Max. 0.5A PWR +12V 1 2 +12V PWR Max. 0.5A
Max. 0.5A PWR +12V 3 4 +12V PWR Max. 0.5A
Max. 0.5A PWR +12V 5 6 GND PWR Max. 0.5A
Max. 0.5A PWR +5V 7 8 GND PWR Max. 0.5A
Max. 0.5A PWR LCDVCC 9 10 LCDVCC PWR Max. 0.5A
2K2Ω, 3.3V OT DDC CLK 11 12 DDC DATA OT 2K2Ω, 3.3V
3.3V level OT BKLTCTL 13 14 VDD ENABLE OT 3.3V level
3.3V level OT BKLTEN# 15 16 GND PWR Max. 0.5A
LVDS LVDS A0- 17 18 LVDS A0+ LVDS
LVDS LVDS A1- 19 20 LVDS A1+ LVDS
LVDS LVDS A2- 21 22 LVDS A2+ LVDS
LVDS LVDS ACLK- 23 24 LVDS ACLK+ LVDS
LVDS LVDS A3- 25 26 LVDS A3+ LVDS
Max. 0.5A PWR GND 27 28 GND PWR Max. 0.5A
LVDS N.C. 29 30 N.C. LVDS
LVDS N.C. 31 32 N.C. LVDS
LVDS N.C. 33 34 N.C. LVDS
LVDS N.C. 35 36 N.C. LVDS
LVDS N.C. 37 38 N.C. LVDS
Max. 0.5A PWR GND 39 40 GND PWR Max. 0.5A
Note 1: The KTUS15 board supports single channel, 18/24bit OpenLDI/ SPWG panels on the LVDS
interface up to Wide XGA (1366x768 @ 85Hz) panel resolution. With an external 1-to-2 pixel per clock
converter, LVDS panels up to 1280x1024 are supported.
Signal Description – LVDS Flat Panel Connector:
Signal Description
LVDS A0..A3 LVDS A Channel data
LVDS ACLK LVDS A Channel clock
BKLTCTL Backlight control (1), PWM signal to implement voltage in the range 0-3.3V
BKLTEN# Backlight Enable signal (active low) (2)
VDD ENABLE Output Display Enable.
LCDVCC
VCC supply to the flat panel. This supply includes power-on/off sequencing.
The flat panel supply may be either 5V DC or 3.3V DC depending on the CMOS
configuration. Maximum load is 1A at both voltages.
DDC CLK DDC Channel Clock
Note 1: Windows API will be available to operate the BKLTCTL signal. Some Inverters have a limited voltage
range 0- 2.5V for this signal: If voltage is > 2.5V the Inverter might latch up. Some Inverters
generates noise on the BKLTCTL signal, resulting in making the LVDS transmission failing
(corrupted picture on the display). By adding a 1Kohm resistor in series with this signal, mounted in
the Inverter end of the cable kit, the noise is limited and the picture is stable.
Note 2: If the Backlight Enable is required to be active high then, check the following BIOS Chipset setting:
Backlight Signal Inversion = Enabled.