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.

Blu-ray player rear panel
HDMI Port on a Blu-ray/DVD Player




HDMI-to-HDMI Cable
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 Connector Manufacturers

HDMI Connector
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}

HDMI-to-HDMI Cable

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.


Leroy's Web Page
Home

Electronic Parts and Equipment Distributors Electronic Component Manufacturers OEM Electronic Equipment Manufacturers EDA Software Producers CAD/CAE Software Engineering Standards, EE Publications Interface/Embedded Computer Bus Electronic Engineering Design Data Engineering Reference Information.
DistributorsComponents Equipment Software Standards Buses Design Reference

Modified 2/26/12
© 1998 - 2012 All rights reserved Leroy Davis