ADLINK Technology CoreModule 745, Reference Manual

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Chapter 3 Hardware
28 Reference Manual CoreModule 745
Video (VGA/LVDS) Interface
The CPU provides the graphics control and video signals to the traditional glass CRT monitors and LCD flat
panel displays. The video features are listed below:
VGA features:
•
Supports maximum resolutions of 1400x1050 at 60Hz or 2048x1536 at 60Hz
•
Provides 2D registers for added color, depth, resolution, and hardware acceleration
•
Provides integrated 3 x 8-bit DAC with R, G, and B signals to the monitor
LVDS features:
•
Integrated single LVDS channel supporting resolution up to 1280x800 or 1366x768
•
Supports 1 x 18 data format
•
Supports transmit clock frequency ranges from 25 MHz to 112 MHz
Table 3-10 lists the pin signals of the video (LVDS/VGA) header, which provides 30 pins, 2 rows, odd/even
pin sequence (1, 2) with 0.079" (2mm) pitch.
Table 3-10. Video Interface Pin Signals (J19)
Pin # Signal Description
1 +12V +12 volts for flat panel and backlight
2 VCC_LVDS_CONN JP2 determines LVDS voltage (+3.3V or +5V)
3 GND Ground
4 GND Ground
5 LA_CLK_P LVDS Clock Positive
6 LA_CLK_N LVDS Clock Negative
7 LA_DAT2_P LVDS DATA Positive Line 2
8 LA_DAT2_N LVDS DATA Negative Line 2
9 LA_DAT1_P LVDS DATA Positive Line 1
10 LA_DAT1_N LVDS DATA Negative Line 1
11 LA_DAT0_P LVDS DATA Positive Line 0
12 LA_DAT0_N LVDS DATA Negative Line 0
13 LBKLT_CTL Panel Backlight Control
14 LVDD_EN Enable Panel Power
15 LDDC_CLK Display Data Channel Clock
16 LDDC_DATA Display Data Channel Data
17 LBKLT_EN Enable Backlight Inverter
18 NC Not Connected
19 CON_DAC_SDA Digital to Analog Converter DDC (Display Data Channel) - Data
20 CON_DAC_SCL Digital to Analog Converter DDC (Display Data Channel) - Clock
21 CON_DAC_RED Digital to Analog Converter – Red Output to the CRT
22 RED_RETURN VGA Ground for Red Output
23 CON_DAC_GREEN Digital to Analog Converter – Green Output to the CRT
24 GREEN_RETURN VGA Ground for Green Output
25 CON_DAC_BLUE Digital to Analog Converter – Blue Output to the CRT
26 BLUE_RETURN VGA Ground for Blue Output
27 CRT_HSYNC Horizontal Sync – Digital Horizontal Sync Output to the CRT