Pd1.4 to hdmi2.0 adapter cable disassembly.

I bought one online recently PD1.2 turn HDMI2.0 Of HDMI Transfer line , In the spirit of curiosity and R & D , Hua Xueben painfully cut and disassembled the adapter line

 

  What is different from tradition is HDMI There is no big head at that end , The signal transfer board is perfectly integrated with the lines . So we can see that the chip on the adapter board is also relatively small , A closer look shows that the chip is LT One of long Xun PD1.4 turn HDMI2.0 One of the QFN-48 Chip .

Due to the limited shooting technology , Simply take the photos of the store owner to give an in-depth explanation . Made of aluminum foil , Pure copper ground wire , Aluminum foil and aluminum magnesium woven mesh form a shielding front with four layers of shielding mesh , And the innermost is the oxygen free copper core , According to the standard , The oxygen content of oxygen free copper shall not be greater than 0.02%, The total content of impurities shall not be greater than 0.05%, The purity of copper is greater than 99.95%. Its characteristics Less resistance , Don't waste every kilowatt hour , Oxygen free copper has low oxygen content , It is more beneficial to the toughness of the product , Good tensile properties , More stable quality .

And this one PD1.4 turn HDMI2.0 Long Xun chip ,

It is a high-performance dual channel C/DP1.4 Type to HDMI2.0 converter , Designed to put USB C Type source or DP1.4 Source connected to HDMI2.0 Receiver .LT8711UXD Integrated with a DP1.4 Compatible with the receiver and a compliant HDMI2.0 Standard transmitter . Besides , It also includes two for CC communication CC controller , In order to realize the DP Alt Mode and power supply function , One for upstream Type-C port , The other is for the downstream port .
DP The receiver supports a maximum of per channel 8.1Gbps Data rate , And USES the HDCP 1.3/2.3 Content protection scheme and embedded key , For safe transmission of digital audio and video content .

HDMI Interface includes 4 individual TMDS The clock / Data on 、DDC and HPD The signal .HDMI The transmitter can support up to 6Gpbs The data rate of , Enough to handle up to UHD 4k 60Hz Format video resolution .HDMI The transmitter is integrated HDCP engine , Support HDCP1.4 / 2.3. Because it contains HDCP,LT8711UXD Secure transmission of protected content . Embedded keys provide the highest level of security HDCP Key security .
The device can be operated automatically through an integrated microprocessor , The microprocessor uses embedded software SPI Flash memory for firmware storage . System control can also be achieved by using a dedicated configuration I2C Slave interface .

2. function
USB C type
• DP1.4 Receiver
• HDMI2.0 The emitter
• other

3. application
Apply to HUB Multi function docking station

DP turn HDMI Video adapter for