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 Cmple-Select is a wholesale of custom cables and accessories for Home Theater. We specialize in HDMI cables and HDMI accessories. At our store you can find all types of HDMI connections: regular, with Ethernet, mini, micro. All products are offered with Free US Shipping!

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  • Type A
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General Interest
Audio Return Channel

What is HDMI Type A?

Nineteen pins, with bandwidth to support all SDTV, EDTV and HDTV modes. The plug (male) connector outside dimensions are 13.9 mm × 4.45 mm and the receptacle (female) connector inside dimensions are 14 mm × 4.55 mm. Type A is electrically compatible with single-link DVI-D

Pin Signal Description
1 TMDS Data2+  
2 TMDS Data2 Shield  
3 TMDS Data2-  
4 TMDS Data1+  
5 TMDS Data1 Shield  
6 TMDS Data1-  
7 TMDS Data0+  
8 TMDS Data0 Shield  
9 TMDS Data0-  
10 TMDS Clock+  
11 TMDS Clock Shield  
12 TMDS Clock-  
13 CEC Control
14 Reserved N.C. on device
15 SCL DDC clock
16 SDA DDC data
17 DDC/CEC Ground  
18 +5 V Power Power EDID/DDC
19 Hot Plug Detect