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3.2 Connectors description
3.2.1 VGA Connector
VGA Connector - CN1
Pin
Signal
Pin
1
CRT_RED
2
GND
3
CRT_GREEN
4
GND
10
5
CRT_BLUE
11
6
GND
12
FFC cables.
Here following the VGA signals' description:
®
CRT_RED: Intel
HD Graphics controller internal DAC's Red Signal video output. A 150Ω pull-down resistor is placed on the line.
®
CRT_GREEN: Intel
HD Graphics controller internal DAC's Green Signal video output. A 150Ω pull-down resistor is placed on the line.
®
CRT_BLUE: Intel
HD Graphics controller internal DAC's Blue Signal video output. A 150Ω pull-down resistor is placed on the line.
®
CRT_HSYNC: Intel
HD Graphics controller internal DAC's Horizontal Synchronization output signal.
®
CRT_VSYNC: Intel
HD Graphics controller internal DAC's Vertical Synchronization output signal.
®
CRT_DDC_CLK: Intel
HD Graphics controller internal DAC's DDC Clock line for VGA displays detection. Output signal, electrical level +3.3V_S, 2k2Ω pull-up
resistor.
®
CRT_DDC_DATA: Intel
HD Graphics controller internal DAC's DDC Clock line for VGA displays detection. Bidirectional signal, electrical level +3.3V_S, 2k2Ω pull-
up resistor.
Please be aware that for the connection to external VGA displays, adapter circuitry is needed; it will provide for ESD protection, voltage level shifting for DDC,
filtering for reduction of noise and EMI, and so on.
Optionally, SECO can provide a dedicated VGA adapter, able to carry out the signals coming out from connector CN1 to a standard DB-15 HD VGA connector.
The adapter is also provided with necessary FFC cable, length 20cm. Please check chapter 5.2.1 for further details.
QuadMo747-x2000
QuadMo747-x2000 User Manual - Rev. First Edition: 1.0 - Last Edition: 2.0 - Author: S.B. - Reviewed by G.G. Copyright © 2014 SECO S.r.l.
Qseven
used to place optional I/O connectors of any kind.
For this reason, on QuadMo747-x2000 board, there is an additional
Signal
connector, which carries out VGA interface coming out from Intel
7
CRT_HSYNC
Graphics controller embedded in the CPU.
8
CRT_VSYNC
Considering that Intel
9
+5V_S
displays, it is possible this way to have many possible combinations of display, using this VGA
connector, LVDS interface and HDMI / DP ++ interfaces available on Qseven
CRT_DDC_CLK
connector (type of interfaces available depends on the module's confirguation purchased).
CRT_DDC_DATA
VGA connector is an FFC/FPC connector, top contacts, type HIROSE FH12A-12S-0.5SH(55),
GND
with pinout shown in the table on the left. This connector mates with 0.5mm pitch 12-poles
®
specifications Rel. 2.0 define an area, on the PCB, that can be
®
HD Graphics controller is able to manage up to two independent
®
HD
®
golden edge
22
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