LVDS pinouts

[đeli hađiselimović]

Hi!

I found out the LCD_CON on OLinuxino-micro A20 could output LVDS instead of TTL which is default if I get it right.

Now I checked the FEX guide 

http://linux-sunxi.org/Fex_Guide#lcd.5B0.2F1.5D_configuration

and this example

http://linux-sunxi.org/Cubieboard/LVDS


I dont see from here how to activate ports on A20 (for example PD00 - PD18) to represent the 19 pins required to drive the TFT-LCD.

My panel is QD15TL0206 and its pinout:

Interface Cable Pin Assignments 
PIN NO . SYMBOL     FUNCTION 

1        VSS        Ground 
2        VDD        Power Supply, 3.3 V (typical) 
3        VDD        Power Supply, 3.3 V (typical) 
4        V EEDID    DDC 3.3V power 
5        NC         Reserved for supplier test point 
6        Clk EEDID  DDC Clock 
7        DATA EEDID DDC Data 
8        Rin0-      - LVDS differential data input (R0-R5, G0) (odd pixels) 
9        Rin0+      + LVDS differential data input (R0-R5, G0) (odd pixels) 
10       VSS        Ground 
11       Rin1-      - LVDS differential data input (G1-G5, B0-B1) (odd pixels) 
12       Rin1+      + LVDS differential data input (G1-G5, B0-B1) (odd pixels) 
13       VSS        Ground 
14       Rin2-      - LVDS differential data input (B2-B5, HS, VS, DE) (odd pixels) 
15       Rin2+      + LVDS differential data input (B2-B5, HS, VS, DE) (odd pixels) 
16       VSS        Ground 
17       ClkIN-     - LVDS differential clock input (odd pixels) 
18       ClkIN+     + LVDS differential clock input (odd pixels) 
19       VSS        Ground 

Cheers,

Miha

[Jhon Yi]

Maybe you should take a little more time to read the guides.

///////////////////////////////////////
LCD interface define what type of interface to use for LCD. For LVDS
the right value is 3:

; lcd interface
lcd_if = 3

Check whether 24 or 18 bit color is used, and set

lcd_lvds_bitwidth = 1 (if 18bit (RGB666) is used)

RX0+ = LCD0-D0
RX0- = LCD0-D1
RX1+ = LCD0-D3
RX1- = LCD0-D4
RX2+ = LCD0-D5
RX2- = LCD0-D6
RXC+ = LCD0-D7
RXC- = LCD0-D8

You could ignore EDID pins：

4 V EEDID DDC 3.3V power
5 NC Reserved for supplier test point
6 Clk EEDID DDC Clock
7 DATA EEDID DDC Data

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[đeli hađiselimović]

Yeah I got that, but I still dont know which one is the Clkin+/-, ground and VDD..

[Jhon Yi]

Omg, you are really know to less of hardware.

RXC+/- === Clkin+/-
VSS=GND=ground
VCC=VDD=3.3V power supply