Lvds (X7Spa-L Only) - Supermicro Super X7SPA-L User Manual

X7SPA-L/X7SPA-H/X7SPA-HF User's Manual
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LVDS (X7SPA-L only)

Low-Voltage Differential Signaling (LVDS) is an industry-standard electrical signal-
ing system. This signaling system can run at very high speeds over inexpensive
copper wires using low power.
The LVDS bus on the X7SPA-L motherboard is used to transport video data from
the built-in graphics adapter to a computer monitor, such as a user-supplied external
LCD display. This motherboard's 18-bpp LVDS connector (6 bits/color) is located
on J5 and the inverter connector for the LCD/back light control is located on J6. It
is possible for certain types of 24-bpp LCD panels (8 bits/color) to be connected to
the 18-bpp interface. Please refer to the following illustration:
Differential Clock
Differential Data
Differential Data
Differential Data
Differential Clock
Differential Data
Differential Data
Differential Data
18-bpp Connector
Note: The full 24-bpp range will not be available on the 24-bpp LVDS panel because
the Differential Data Pair A3/B3 is not being driven by the 18-bpp connector. The
LVDS panel will in effect operate as an 18-bpp device. For an in-depth explanation
on this particular subject, go to www.intel.com and search for document 315975.
pdf.
Pair A
Pair A0
Pair A1
Pair A2
Pair B
Pair B0
Pair B1
Pair B2
24-bpp LVDS Panel
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Differential Clock
Pair A
Differential Data
Pair A0
Differential Data
Pair A1
Differential Data
Pair A2
Differential Data
Pair A3
Differential Clock
Pair B
Differential Data
Pair B0
Differential Data
Pair B1
Differential Data
Pair B2
Differential Data
Pair B3