Kontron KTH81/mITX - LVDS Flat Panel Connector (LVDS)

KTD-N0882-I Page 42 Internal Connectors
KTQ87/KTH81 Users Guide
7.5 LVDS Flat Panel Connector (LVDS)
The LVDS connector (Flex boards only) is based on 40 pole connector type Samtec SHF-120-01-F-D-SM-K-
TR or similar.
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
LVDS B0-
29
30
LVDS B0+
LVDS
LVDS
LVDS B1-
31
32
LVDS B1+
LVDS
LVDS
LVDS B2-
33
34
LVDS B2+
LVDS
LVDS
LVDS BCLK-
35
36
LVDS BCLK+
LVDS
LVDS
LVDS B3-
37
38
LVDS B3+
LVDS
Max. 0.5A
PWR
GND
39
40
GND
PWR
Max. 0.5A
Note: The LVDS connector supports single and dual channel, 18/24bit SPWG panels up to a resolution of
1600x1200 or 1920x1080 and with limited frame rate up to 1920x1200.
Signal Description – LVDS Flat Panel Connector:
Signal
Description
LVDS A0..A3
LVDS A Channel data
LVDS ACLK
LVDS A Channel clock
LVDS B0..B3
LVDS B Channel data
LVDS BCLK
LVDS B 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 display. 5V or 3.3V (1A Max.) selected in BIOS setup menu. Power
sequencing depends on LVDS panel selection. (Shared with eDP connector)
DDC CLK
DDC Channel Clock
Notes: 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, causing the LVDS transmission to fail (corrupted picture on
the display). By adding a 1Kohm resistor in series with this signal, mounted at the Inverter end of
the cable kit, the noise is limited and the picture is stable.
If the Backlight Enable is required to be active high then, check the following BIOS Chipset setting:
Backlight Signal Inversion = Enabled.