DVI, or Digital Video
Interface Technology
came about in 1999 as a
result of the formation
of the
Digital Display
Working Group (DDWG)
a year prior. Their
original mission was to
create a  standard
digital video interface
for communication
between a Personal
Computer and a
VGA
monitor. Recently,
however, the consumer
electronics industry
began implementing DVD
players, set-top boxes,
televisions, and
LCD/plasma monitors with
DVI technology.
If you are looking
to connect a source with
a digital DVI output to
a display with a digital
DVI input, such as an
HDTV, then you will
want to purchase either
a single link or a dual
link DVI-D cable.
Whether you buy single
or dual link DVI-D
depends primarily on the
amount of bandwidth
needed for your
particular application.
Single
TMDS link
DVI cable can support
resolutions and timings
that use a video clock
rate of about 25-165
MHz. A dual link DVI-D
cable, on the other
hand, will handle up to
330 MHz and is backwards
compatible with single
link. Thus if you are
unsure which type you
need, the dual link will
work where the single
link may not. In order
to determine your
required bandwidth just
multiply your desired
resolution by your
desired refresh rate
(ie. 1600x1200 x 70 =
134 MHz). |
|
Pin |
Signal |
Pin |
Signal |
Pin |
Signal |
|
1 |
D2- |
9 |
D1- |
17 |
D0- |
|
2 |
D2 |
10 |
D1 |
18 |
D0 |
|
3 |
shield |
11 |
shield |
19 |
shield |
|
4 |
D4- |
12 |
D3- |
20 |
D5- |
|
5 |
D4 |
13 |
D3 |
21 |
D5 |
|
6 |
DDC SCL |
14 |
+5V |
22 |
shield |
|
7 |
DDC SDA |
15 |
ground |
23 |
CLK |
|
8 |
reserved |
16 |
Hot Plug
Detect |
24 |
CLK- |
|