Q7-C25
Q7-C25 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Authors: S.B. and A.R - Reviewed by N.P. - Copyright © 2020 SECO S.p.A
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3.2.11
DP interface signals
As said previously, the NXP i.MX 8M processor has an HD Display Transmitter Controller (HDMI TX), which offers multi-protocol support of standards, such as Display
Port 1.3 interface. Therefore, the TMDS interface signals are shared with the signals for the DisplayPort interface.
If the board purchased is in DP configuration, then the following signals will be available on Qseven
®
golden finger connector:
D/DP_LANE3-: Display Port differential pair #3.
D/DP_LANE2-: Display Port differential pair #2.
D/DP_LANE1-: Display Port differential pair #1
D/DP_LANE0-: Display Port differential pair #0
/DP_AUX-: Display Port auxiliary channel differential pair.
DP_HPD#. DisplayPort Hot Plug Detect Input signal. +3.3V_RUN
-up resistor. This signal was present on Qseven
®
specifications until rev. 1.2, while it has been deleted with Qseven specifications rev. 2.0, since the Hot Plug signal for Display Port had been merged with the HPD
signal for HDMI. Qseven
®
specification Errata Sheet for version 2.0, published by SGET consortium, reintroduced this signal for compatibility with Qseven
®
modules
Rel 1.2 compliant.
DP and HDMI interfaces share the same pins on Qseven
®
Golden Finger Connector. Default SW for Q7-C25 is for HDMI support, to have DP support customer
needs to load a dedicated boot.
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.
