Besides, CEC is assigned to 14 instead of pin 13. Therefore all positive signals of the differential pairs are swapped with their corresponding shields. The only difference is it is meant for portable devices. It also has the same 19 pin configuration as like Type A. The spring property for locking shall be activated by the locking hole of the plug shell. Additional springs may be used for EMI reduction. The Shell of the connector has a spring for locking. The plugs’ external dimension is 10.42mmx2.42mm. The Shell will have the dimple for locking. Type B is a higher resolution version of type A. The type B connector is one and half times wider. But, it is not commercially employed in any device. It is electrically compatible with dual-link DVI D. However, the use of the additional three differential pairs is reserved. It is designed to support resolutions higher than 1080p. This type of connector is used for high-resolution displays. And it carries six differential pairs instead of three. Type B connector external dimension is 21.2 mm x 4.45 mm. Whereas the second row begins with the 2 nd pin and ends with the 18 th pin. Therefore the first row starts with the first pin and ends in the 19 th pin. The A-type connector pinout has two rows of pins with alternate numbering down the length of the connector. And the receptacle or female connector’s internal dimension is 14mmx4.55mm. The male connector of type “A” external dimension is 13.9mmx4.45mm. It present in TVs, Recorders, Set-top Boxes Blue Ray disc players and more. Type A is widely used in many applications. HDMI Pinout: Type A and Type E Connector Pin Assignment: It monitors power and plugs and unplugs events. It will help the device to reinitialize the DDC when you are reconnecting the cables. Pin 18 is allotted to use the 5V low voltage power provided by the source device. Pin 14 is kept as reserved for future specification updates. And it can connect and control a maximum of 15 devices. CEC establishes bi-directional communication through this pin. The pins 10-12 carry the clock data channel that synchronizes the signals (+ – ground or data shield). The pins 7-9 carry data channel 0(+ – ground or data shield). The pins 4-6 carry data channel 1(+ – ground or data shield). The pins 1-3 carry data channel 2(+ – ground or data shield). They are the Video data period, Data island period, and Control period. These data are organized into three categories. They form four separate channels for video data, clock data. It includes video, audio, and auxiliary data information. Generally, pins 1-12 carry the TMDS data transmission. Therefore no issues of cross-connection and having signals on the wrong lines. The particular type of HDMI connectors cannot mate with the connectors of different types. The HDMI pin specification is more important to the manufacturers to make cables and other devices with uniformity. They are compatible with high-speed transmission. The connectors are of impedance matching design. It is of horizontal pitch, 2-row, 19 position-pins. It has a unique locking tab to keep the cable firmly connected. Type D is exclusively meant for automotive connection systems. It is similar to types A and C, but the pin assignment is different from both A and B. Type D is a micro connector similar to the micro USB connector. It supports very high-resolution displays for those who use dual-link. Since connector B carries the second TMDS link, it is a little bulky. And there won’t be a compatibility issue. The HDMI pinout and pin configuration of each connector type is defined and remains the same. Subsequently, in 1.4, specifications D and E are defined. C type is defined in the 1.3 specifications. The types A and B are specified in the HDMI 1.0 version. Totally there are five HDMI connector types. In this post let us know about HDMI Pinout, HDMI connector types and more.
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