Connectors Description - Seco Qseven Q7-974 User Manual

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
Connector mates with 0.5mm pitch 12-poles FFC cables.
Here following the VGA signals' description:
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CRT_RED: Intel Atom E38xx SoC internal DAC's Red Signal video output. A 150Ω pull-down resistor is placed on the line.
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CRT_GREEN: Intel Atom E38xx SoC internal DAC's Green Signal video output. A 150Ω pull-down resistor is placed on the line.
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CRT_BLUE: Intel Atom E38xx SoC internal DAC's Blue Signal video output. A 150Ω pull-down resistor is placed on the line.
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CRT_HSYNC: Intel Atom E38xx SoC internal DAC's Horizontal Synchronization output signal.
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CRT_VSYNC: Intel Atom E38xx SoC internal DAC's Vertical Synchronization output signal.
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CRT_DDC_CLK: Intel Atom E38xx SoC internal DAC's DDC Clock line for VGA displays detection. Output signal, electrical level +3.3V_S, 2k2Ω pull-up resistor.
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CRT_DDC_DATA: Intel Atom E38xx SoC 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.
Q7-974
Q7-974 User Manual - Rev. First Edition: 0.1 - Last Edition: 2.3 - Author: S.B. - Reviewed by G.G. Copyright © 2017 SECO S.r.l.
Qseven
used to place optional I/O connectors of any kind.
For this reason, on Q7-974 board, there is an additional connector,
Signal
which carries out VGA interface coming out from Intel
7 CRT_HSYNC
SOCs.
8 CRT_VSYNC
Considering that this series of SOCs are able to manage up to two independent displays, it is
9 +5V_S
possible this way to have many possible combinations of display, using this VGA connector,
LVDS or eDP interface and HDMI / DP ++ interfaces available on Qseven
CRT_DDC_CLK
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.
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specifications Rel. 2.0 define an area, on the PCB, that can be
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Atom E38xx
® golden finger (type
22