Seco Qseven QuadMo747 x2000 User Manual page 38

2.0 compliant module with the intel atom cedarview family cpus and intel nm10 express chipset

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3.2.3.10 DP interface signals

As told in the previous paragraph, the Intel

modes.

Digital Display Interface #0, in particular, is used to implemented HDMI or Multimode Display Port interface.

If the board purchased is in DP configuration, then this interface works as a multimode Display Port: this means that it is possible to use it directly for the

connection of Display Port compatible monitors or converted to HDMI/DVI or LVDS interfaces on the carrier board or on the external connector (by using an

adapter).

In this configuration, the following signals will be available on Qseven

DP_LANE3+/DP_LANE3-: Display Port differential pair #3.

DP_LANE2+/DP_LANE2-: Display Port differential pair #2.

DP_LANE1+/DP_LANE1-: Display Port differential pair #1.

DP_LANE0+/DP_LANE0-: Display Port differential pair #0.

DP_AUX+/DP_AUX-: Display Port auxiliary channel differential pair.

DP_HDMI_HPD#: Hot Plug Detect Input signal. +3.3V_S electrical level signal, active low with 100kΩ pull-up resistor. Please consider that HDMI specification

assume that the Hot Plug signal is active high, and at +5V_S level. An inverting voltage level shifter is therefore needed on the Carrier board to ensure the working

of HDMI port.

The following signals, used only for HDMI interface, are also necessary, for a correct implementation, of a multi-mode Display Port connection on the Carrier Board.

HDMI_CTRL_DAT: DDC Data line for HDMI panel. Bidirectional signal, electrical level +3.3V_S with a 2k2Ω pull-up resistor. Also used as a strap signal for the

QuadMo747-x2000 module (please check par. 3.2.4 for further details).

HDMI_CTRL_CLK: DDC Clock line for HDMI panel. Bidirectional signal, electrical level +3.3V_S with a 2k2Ω pull-up resistor.

HDMI_CEC: HDMI Consumer Electronics Control (CEC) Line. Bidirectional signal, electrical level +3.3V_S. According to Qseven

reality, a General Purpose 1_wire bus interface, that can be used for implementation of HDMI_CEC. Real usage of this signal depends on QuadMo747-x2000

dedicated API libraries.

Please refer to the following schematics as an example of implementation of multimode DisplayPort connection on the carrier board, which will allow the use of

external adapters for the conversion to HDMI/DVI.

QuadMo747-x2000

Atom Cedarview family of CPUs offer two Digital Display Interfaces, configurable to work in HDMI/DVI/DP++/eDP

golden card edge connector:

specifications, the signal is, in

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