
Interface Signals 19
LEC-BASE
2.1.21 TTL
Table 2-25 lists the pin signals of the TTL header which provides 34-pins, 2 rows, odd/even pin
sequence (1, 2) with 0.079" (2.0mm) pitch. These pins are connected directly to the LCD inter-
face at the SMARC connector.
NOTE: The shaded table cells denote power or ground.
Table 2-25: TTL Video Interface Pin/Signal Descriptions (J3)
Pin # Signal Description
1 FP0 Flat Panel 0 – data output, Blue0 (24-bit)
2 FP16 Flat Panel 16 – data output, Red0 (24-bit)
3 FP1 Flat Panel 1 – data output, Blue1 (24-bit)
4 FP17 Flat Panel 17 – data output, Red1 (24-bit)
5 FP2 Flat Panel 2 – data output, Blue0 (18-bit); Blue2 (24-bit)
6 FP18 Flat Panel 18 – data output, Red0 (18-bit), Red2 (24-bit)
7 FP3 Flat Panel 3 – data output, Blue1 (18-bit); Blue3 (24-bit)
8 FP19 Flat Panel 19 – data output, Red1 (18-bit), Red3 (24-bit)
9 FP4 Flat Panel 4 – data output, Blue2 (18-bit); Blue4 (24-bit)
10 FP20 Flat Panel 20 – data output, Red2 (18-bit), Red4 (24-bit)
11 FP5 Flat Panel 5 – data output, Blue3 (18-bit); Blue5 (24-bit)
12 FP21 Flat Panel 21 – data output, Red3 (18-bit), Red5 (24-bit)
13 FP6 Flat Panel 6 – data output, Blue4 (18-bit); Blue6 (24-bit)
14 FP22 Flat Panel 22 – data output, Red4 (18-bit), Red6 (24-bit)
15 FP7 Flat Panel 7 – data output, Blue5 (18-bit); Blue7 (24-bit)
16 FP23 Flat Panel 23 – data output, Red5 (18-bit), Red7 (24-bit)
17 FP8 Flat Panel 8 – data output, Green0 (24-bit)
18 VSYNC Vertical Sync
19 FP9 Flat Panel 9 – data output, Green1 (24-bit)
20 HSYNC Horizontal Sync
21 FP10 Flat Panel 10 – data output, Green0 (18-bit), Green2 (24-bit)
22 LCD_PCLK Pixel Clock – This signal provides the clock for transferring digital pixel data
23 FP11 Flat Panel 11 – data output, Green1 (18-bit), Green3 (24-bit)
24
VDD_5V 5 Volt Supply
25 FP12 Flat Panel 12 – data output, Green2 (18-bit), Green4 (24-bit)
26
VDD_5V 5 Volt Supply
27 FP13 Flat Panel 13 – data output, Green3 (18-bit), Green5 (24-bit)
28
VDD_5V 5 Volt Supply
29 FP14 Flat Panel 14 – data output, Green4 (18-bit), Green6 (24-bit)
30
LCD_3V3 3.3 Volt Supply
31 FP15 Flat Panel 15 – data output, Green5 (18-bit), Green7 (24-bit)
32
LCD_3V3 3.3 Volt Supply
33
GND Ground
34
GND Ground
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