6
HDMI PIN DEFINITION
Type A (Receptacle) HDMI
Pin 1 TMDS Data2+
Pin 8 TMDS Data0 Shield Pin 14 Reserved (N.C. on device)
Pin 2 TMDS Data2 Shield Pin 9 TMDS Data0–
Pin 15 SCL
Pin 3 TMDS Data2–
Pin 10 TMDS Clock+
Pin 16 SDA
Pin 4 TMDS Data1+
Pin 11 TMDS Clock Shield Pin 17 DDC/CEC Ground
Pin 5 TMDS Data1 Shield Pin 12 TMDS Clock–
Pin 18 +5V Power
Pin 6 TMDS Data1–
Pin 13 NC
Pin 19 Hot Plug Detect
Pin 7 TMDS Data0+
NOTICE
1. If the DVI or HDMI device requires the EDID information, please use CV-1001 or CV-5005H EDID
Reader/Writer to retrieve and provide DVI or HDMI display EDID information.
2. All HDMI over CAT5 transmission distances are measured using Belden 1583A CAT5e 125MHz
UTP cable and ASTRODESIGN Video Signal Generator VG-859C & VG-870B.
3. The transmission length is largely affected by the type of Cat-5/5e/6 cables, the type of HDMI
sources, and the type of HDMI display. The testing result shows solid UTP cables (usually in the
form of 300m [1,000ft] bulk cables) can transmit a lot longer signals than stranded UTP cables
(usually in the form of fixed length patch cords). Shielded STP cables are better suited than
unshielded UTP cables. A solid UTP Cat-5e cable shows longer transmission range than stranded
STP Cat-6 cable. For long extension applications, solid UTP/STP cables are the only viable choice.
4. EIA/TIA-568-B termination (T568B) for Cat-5/5e/6 cables is recommended.
5. To reduce the interference among the unshielded twisted pairs of wires in Cat-5/5e/6 cable, one
can use double shielded STP cables to improve EMI problems, which is worsen in long
transmission.
6. Because the quality of the category cables has the major effect on how long the transmission
limit can achieve and how good is the received picture quality, the actual transmission range is
subject to one's choice of Cat-5/5e/6 cables. For desired resolutions greater than 1080i or