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VIA VT1631 LVDS Transmitter -
Enabling the latest video interfaces and is an ideal
solution for the latest Flat Panel display solutions. |
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With the growth of devices such as digital satellite
systems, HDTV, DVD players, camcorders and cameras, combined
with applications like games, web content, PC graphics,
etc., consumers are demanding higher quality methods to
transfer video and images for electronic devices. While
legacy solutions are still widely used, noise generation,
power consumption, and noise immunity make them less than
perfect solutions.
The VIA VT1631 is a Low Voltage Differential Signaling
(LVDS) Transmitter that enables a vast improvement in
the amount and quality of video data that can be transferred
between devices enabling higher resolutions, lower power
requirements, and universal connectivity.
Designed to support pixel data transmissions from a Host
to a Flat Panel display ranging from VGA to UXGA resolutions,
the VIA VT1631 complies with the Open LDI Specification
for Digital Display Interfaces. Supporting data speeds
up to 592Mbytes/sec on each LVDS line for a aggregate
throughput rate of 4.76Gbps, the VIA VT1631 has a narrow
bus to reduce cable size and cost, and comes in a TQFP-100
Thin Quad Flat package, making it ideal for applications
such as connections to flat panel displays in notebook
computers.
The VIA VT1631 is designed to be compatible with Graphics
Memory Controller Hub by implementing two data cycles
per clock, that can be controlled by a two-wire serial
communication interface. Two input modes are supported:
one port of 12-bit (two data cycles per clock) input data
for 24-bit RGB, and two ports of 12-bit (two data cycles
per clock) input for dual 24-bit RGB (48-bit in total).
In both modes, input data will be clocked on both rising
and falling edges in LVTTL level operation, or clocked
on the cross over of differential clock signals in the
low swing operation. Each input data width will be 1/2
of clock cycle.
With an input clock at 85MHz and input data at 170Mbps,
the maximum transmission rate of each LVDS line is 592
Mbps, for an aggregate throughput rate of 2.38Gbps/4.76Gbps.
It converts 24/48 bits (Single/Dual Pixel 24-bit color)
of data into 4/8 LVDS data streams.
The VIA VT1631 is an ideal solution to solve EMI and
cable size problems for high-resolution flat panel display
applications. Providing a reliable industry standard interface
based on LVDS technology, the VIA VT1631 delivers the
bandwidth needed for high-resolution panels while maximizing
bit times, and keeping clock rates low to reduce EMI and
shielding requirements. |
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