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.
 DVI-I,
having the capacity to
carry both digital and
analog signals, can be
used to connect an
analog output to an
analog input, or a
digital output to a
digital input only.
Take note that a DVI-I
cable can not
connect a digital output
to an analog input or
vice versa. A DVI-I
plug will accept any
type of DVI cable,
DVI-I,
DVI-D, or
DVI-A, but
you must make sure that
your source and display
are both using the same
format for it to work.
Also, DVI-I, as with
DVI-D, comes with either
a single or a dual
TMDS link.
Single
TMDS link DVI cables
can support resolutions
and timings that use a
video clock rate of
about 25-165 MHz. A
dual link DVI-I 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 |
VSYNC |
16 |
Hot Plug
Detect |
24 |
CLK- |
|
C1 |
RED |
C2 |
GREEN |
C3 |
BLUE |
|
C4 |
HSYNC |
C5 |
ground |
|
|
|