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HDMI interface definition + connection diagram

Usually more common HDMI interface equipment are computer monitors, digital TVs, projectors, high-end audio, computer graphics cards, laptops, TV set-top boxes, PS3/4/5 game consoles, HDMI extenders, HDMI splitters, HDMI converters, HDMI audio splitters, HDMI KVM switches and HDMI screen splitters, etc., this HDMI interface (ie HDMI A Type, specification is 4.45mm× 13.9mm) is a standard 19Pin HDMI interface, with a total of 19 pins, which will be connected to 19 wires of the HDMI cable.
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Standard HDMI interface definition (explanation of the corresponding function of each pin)

HDMI pin number signal
1 TMDS Date 2+
2 TMDS data 2 Masking
3 TMDS data 2-
4 TMDS data 1+
5 TMDS data 1 masking
6 TMDS Data 1-
7 TMDS data 0+
8 TMDS data 0 masked
9 TMDS data 0-
10 TMDS clock +
11 TMDS clock masking
12 TMDS clock -
13 CLP
14 HEC data-
15 SCL (DDC serial clock)
16 SDA (DDC serial data line)
17 DDC/CEC/HEC ground
18 +5 V supply (max. 50 mA)
19 Hot Plug Detection (1.3) / HEC Data + (1.4)
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Through the above HDMI interface female base and male pin serial number, combined with the standard HDMI male soldering schematic, the use of a good HDMI cable can solder a good quality standard HDMI cable


Post time: Feb-28-2023