Dual-Link Dvi Signal - Lightware MX-FR9 User Manual

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10. Technologies
10.4. Dual-Link DVI signal
The Dual-Link DVI interface can operate in either Single-Link or Dual-Link mode. The chosen mode depends
on the pixel clock frequency of the signal and it is selected by the hardware automatically. For pixel clock
frequencies lower than 165 MHz, Single-Link mode is selected. For higher pixel clock frequencies (up to
330 MHz), Dual-Link mode is selected. It is important to know that pixel clock frequency is not the same as
TMDS clock frequency when it comes to Dual-Link DVI.
The pixel clock frequency in Single-Link transmission is a 10th part of the data rate. The maximum data rate
of the Single-Link transmission is 1.65 Gbps per TMDS channel and the maximum pixel clock frequency is
165 MHz. In this case the pixel clock frequency equals the TMDS clock frequency. The pixel clock frequency
in Dual-Link transmission (when in Dual-Link mode) is a 5th part of the data rate. The maximum data rate of
Dual-Link transmission is still 1.65 Gbps per TMDS channel but the maximum pixel clock frequency is 330
MHz. In this case the pixel clock frequency is two times the TMDS clock frequency.
The DVI standard maximizes the data rate of the TMDS channels in 1.65 Gbps. Dual-Link DVI interface
enables a higher resolution compared to the Single-Link transmission by doubling the number of wire pairs
to transmit the video signal. In Single-Link cables 3 wire pairs carry the color information (red, green and
blue) and one wire pair carries the clock signal (TMDS clock).
Video lines of the Single-Link interface
MX-FR Series Modular Matrix Frames – User's Manual
In Dual-Link cables, 6 wire pairs carry the color information next to the TMDS clock signal. One color
component is carried by two wire pairs, where one wire pair carries the odd pixels and the other wire pair
carries the even pixels.

INFO:
color of the actual wires inside the cable.
Applied CPU2 firmware: v3.5.7b8 | LDC software: v2.5.17b2
Video lines of the Dual-Link interface
The colors of the wire pairs in the picture represent the color information they carry and not the
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