3 lvds flat panel connector (lvds), 986lcd-m family – Kontron 986LCD-M-mITX (BGA) User Manual
Page 31
986LCD-M Family
KTD-N0837-B
Public
User Manual
Date: 2012-04-17
Page
31 of 91
4.4.3 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
4K7Ω, 3.3V
OT
DDC CLK
11
12
DDC DATA
OT
4K7Ω, 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
Note 1
LVDS
LVDS A3-
25
26
LVDS A3+
LVDS
Note 1
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
Note 1
LVDS
LVDS B3-
37
38
LVDS B3+
LVDS
Note 1
Max. 0.5A
PWR
GND
39
40
GND
PWR
Max. 0.5A
Note 1: Support of 24bit OpenLDI/ SPWG panels is not officially supported by Intel®, but is supported by the
986LCD series boards by Kontron. Kontron intends to continue to provide 24bit OpenLDI/ SPWG panel
support even if Intel® withdraws this from the chipset, by an external converter module.
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 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
DDC DATA
DDC Channel Data
Note 1) Windows API (version Hwmon_KTAPI ver 4.5 or newer) is available to operate the BKLTCTL signal.
Some Inverters has a limited voltage range 0- 2.5V for this signal: If voltage is > 2.5V the Inverter
might latch up. Some Inverters generates noise to the BKLTCTL signal resulting in making the lvds
transmision fail (corrupted picture on the display). By adding 1K Ohm resistor in series with this signal
and mounted in the Inverter end of the cable kit the noise is limited and picture is stabil.
Note 2) If the Backlight Enable is required to be active high then make the BIOS Chipset setting: Backlight
Signal Inversion = Enabled.