I2C bus from pin 101, 102 of 1389B to pin 21, 22 of 1392E. Line synchronous signal HSYNC# and filed
synchronous signal VSYNC# outputted by 1389 from 179, 181 are sent to pin 38, 39 of 1392E. Pin 110 of
1389 outputs signal to send to pin 27 of 1392E to fulfill the control to 1392E. HDMI_SCL#, HDMI_SDA#
are display data channel, which outputs from pin 103, 104 of 1389 to HDMI jack, DDC (display data
channel) is responsible to report information about the setup and performance of receiving device to
other device, which needs E-EDID (Enhanced Extended Display Identification Data) that reads receiving
device to fulfill.
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