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5.8.3
DVI
The DVI is similar to HDMI in the way it uses TMDS for transmitting data from transmitter to the receiver but unlike the HDMI, does not support
audio and CEC.
Note
To support the DVI interface, you should implement an external level translator/shifter (e.g. PTN3360D) on their carrier board. See table 8
above for possible display combinations.
5.8.4
LVDS / eDP
The conga-QA5 offers an LVDS interface on the edge finger. The interface is provided by routing the onboard PTN3460 eDP to LVDS bridge
to the eDP port of the SoC. The bridge processes the incoming DisplayPort stream, converts the DP protocol to LVDS protocol and transmits
the processed stream in LVDS format.
The LVDS interface supports:
• single or dual channel LVDS interface (color depths of 18 bpp or 24 bpp)
• integrated flat panel interface with clock frequency up to 112 MHz
• VESA standard or JEIDA data mapping
• automatic panel detection via Embedded Panel Interface based on VESA EDID™ 1.3
• resolution up to 1920x1200 in dual channel LVDS mode
The LVDS/eDP pins on the Qseven
®
connector provide LVDS signals by default, but can optionally support eDP signals (assembly option). For
more information, contact congatec technical support.
Note
The LVDS/eDP interface supports either LVDS or eDP signals. Both signals are not supported simultaneously. See table 8 above for possible
display combinations.
5.9
LPC
The conga-QA5 offers the Low Pin Count (LPC) bus. The LPC bus is similar to a serialized ISA bus but with fewer signals. Due to the software
compatibility with the ISA bus, it is easy to implement I/O extensions such as additional serial ports on an application specific baseboard using
the LPC bus. Many devices are available for this cost-efficient, low-speed interface designed to support low bandwidth and legacy devices.