Ddi design consideration, Dvi-i design topology, 3 independent display support – Kontron COMe-bIP2 User Manual
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COMe-bIP2 / Features and Interfaces
DDI Design Consideration
» For sufficient signal quality baseboard designs with long signal lanes or impedance leaps may require an Equalicer
or Redriver for the digital display interfaces
» Due to backwards compatibility to former platforms the DDI hot-plug detection is converted to low active
» SDVO can be used for external conversion to VGA, LVDS, TV-out and requires additional hardware on your baseboard
» DisplayPort can be used directly or with external adapters for HDMI, DVI or VGA
» HDMI or DVI usage on a baseboard requires a level shifter
Find more details for DDI usage as DisplayPort, HDMI or DVI with schematic examples
available
DVI-I Design Topology
DVI-I is supported on PCH Digital Display Port B (COM DDI1) only. The implementation involves routing VGA and DVI-D
signals to DVI-I connector:
» VGA port RGB signals should be routed to Analog RGB pins on the DVI-I connector
» DVI Data and Clock signals on PCH Digital Display Port B should be routed to TMDS Data 0, 1 and 2 pins and TMDS
Clock pin of DVI-I connector respectively
» DVI HPD signals should be routed to the HPD pin of the DVI-I connector
» DVI DDC Clock and Data signals on PCH Digital Display Port B should be routed to the DDC Clock and Data pins of the
DVI-I connector.
3 independent Display Support
The COMe-bIP2 supports up to 3 independent displays in Windows and Linux by using 2 DDI Ports as DisplayPort. The third
display can either be VGA or LVDS or DP/HDMI/DVI/SDVO
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