Other Parts Discussed in Thread: DS90UH940-Q1, DS90UH948-Q1
Hi team,
Can the 947/949 support to driver two display? If it works, is there some special application?
Best regards,
Ansel Song
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Hi team,
Can the 947/949 support to driver two display? If it works, is there some special application?
Best regards,
Ansel Song
Hello Ansel,
Yes, this is possible if the two displays have the exact same video resolution/timings/PCLK and the Video source can provide the video in alternating pixel format to the 947. The Serializer will send then the odd pixels into one of it's outputs and the even pixels into the second output.
Hi Hamzeh,
Is there some documents or application notes to clarify? Because it looks like very limited to driver two display.
Thanks you.
Anse Song
Hello Anse,
there is nothing special. This will be done automatically once using 947 in Dual mode.
See datasheet:
"7.4.2.2 Dual Link Operation
In Dual Link mode, the FPD-Link III TX splits a single video stream and sends alternating pixels on two downstream links. If HDCP is enabled, a single HDCP connection is created for the video that is sent on the two links. The receiver must be a DS90UH948-Q1 or DS90UH940-Q1, capable of receiving the dual-stream video.
Dual link mode is capable of supporting an OpenLDI clock frequency of up to 170MHz, with each FPD-Link III TX port running at one-half the frequency. This allows support for full 1080p video. The secondary FPD-Link III link could be used for high-speed control.
Dual Link mode may be automatically configured when connected to a DS90UH948-Q1/DS90UH940-Q1, if the video meets minimum frequency requirements. Dual Link mode may also be forced using the DUAL_CTL1 register."