HDMI Video Bus
>
High Definition Multimedia Interface
The High Definition Multimedia Interface [HDMI] cable supplies both
high-definition video, multi-channel, digital audio for consumer Audio
Visual [AV] entertainment equipment [HDTV, Amplifiers, DVD, TVs], and Control Signals.
The HDMI
interface is all digital, with no analog signals. HDMI is backward
compatible with the DVI interface, but without the more advanced upgrades
and no audio.
Converters for HDMI to DVI cables are being produced. The
HDMI cable is 5 meters in length and uses 28 AWG wire. The two main buses that comprise the HDMI interface are the;
Transition Minimized Differential Signaling [TMDS] &
Consumer Electronics Control [CEC].
Note that 5 meter or 16 feet is the maximum cable length.
|
HDMI Port on a Blu-ray/DVD Player
|
HDMI Cable
HDMI Connector Pinout
| Pin Number |
Signal name |
Pin Number |
Signal name |
| 1 |
TMDS Data 2+ |
- |
Shell |
| 2 |
TMDS Data 2 Shield |
19 |
Hot Plug Detect |
| 3 |
TMDS Data 2- |
18 |
+5V Power |
| 4 |
TMDS Data 1+ |
17 |
Ground |
| 5 |
TMDS Data 1 Shield |
16 |
DDC Data |
| 6 |
TMDS Data 1- |
15 |
DDC Clock |
| 7 |
TMDS Data 0+ |
14 |
No Connect |
| 8 |
TMDS Data 0 Shield |
13 |
CEC |
| 9 |
TMDS Data 0- |
12 |
TMDS Clock- |
| 10 |
TMDS Clock+ |
11 |
TMDS Clock Shield |
Version 1.4 of the HDMI specification defined new cable, which included Ethernet.
HDMI Cable
Type A; 19 pin connector, electrically compatible with single-link DVI-D.
Type B; 29 pin connector, electrically compatible with dual-link DVI-D
Type C; mini 19 pin connector, 10.42 mm 2.42 mm
Type D; micro 19 pin connector, 2.8 mm 6.4 mm
|
ACON {HDMI A Type}
Leoco {High Definition Media Input, HDMI Socket, HDMI Plug}
Molex {HDMI Connector Manufacturer}
Samtec {19 or 29 position HDMI connector, Surface Mount, 0.5mm}
Tyco Electronics {HDMI Connectors}
|
 |
Three HDMI connectors are defined; Standard, Mini, and Micro connectors.
The physical size gets smaller, but the electrical performance stays the same.
Revision 1.4 of the HDMI standard adds Ethernet to the HDMI cable.
HDMI Standards
High-Definition Multimedia Interface; Specification Version 1.4, 6/2009 [defined Type D connector]
High-Definition Multimedia Interface; Specification Version 1.3, 6/2006 [defined Type C connector]
High-Definition Multimedia Interface; Specification Version 1.2, 8/2005
High-Definition Multimedia Interface; Specification Version 1.1, 5/2004
High-Definition Multimedia Interface; Specification Version 1.0, 12/2002 [defined Type A and Type B connectors]
HDML.org
HDMI Usage
HDMI is the desired connector on the rear panel of Audio/Video gear, and DisplayPort is the desired connector on the newest PC.
However if you interface a TV to a computer than inter-connecting would require either to be on both devices.
HDMI Devices
Manufactures of HDMI Components
Gefen Inc.
{4x4 HDMI Matrix}
Grandbeing Technology Co., Ltd.
{HDMI splitter : 1 by 4, 1 by 8, 2 by 8, 2 by 2, 1 by 2
HDMI switcher : 3 by 1, 5 by 1,
smart 3 by 1,5 by 1
HDMI converter : YpbPr + S/P DIF to HDMI, VGA + DVI + L/R + S/PDIF ---- HDMI,
HDMI extender: CAT5 HDMI extender, HDMI cable extender}
Octava
{4 x 1 HDMI Switch with Optical Toslink Routing}
XtremeMac
{HDMI Switcher}
Computer Video Monitor Information Pages
Out-dated and obsolete video standards:
DFP [Digital Flat Panel] page for additional
info and connector pinout descriptions
EVC [Enhanced Video Connector] page for
additional info and connector pin-out descriptions
EGA [Enhanced Graphics Adapter]
page for additional info and connector pin out descriptions
XGA [eXtender Graphics Adapter] page
for additional info and connector pin-out descriptions
VGA [Video Graphics Adapter] page for
additional info and connector pin-out descriptions
SVGA [Super Video Graphics Adapter]
page for additional info and connector pin-out descriptions
PC Video Buses
Navigation: Engineering Home > Interface Buses > Cabled Interface Standards > Cabled Video Interfaces > HDMI Standard.
Modified 6/13/15
© 1998 - 2016 All rights reserved Larry Davis
