HDMI 1.4 4进2出切换矩阵芯片EP9442编程手册

HDMI 1.4 4进2出切换矩阵芯片编程手册，具有音频分离

This software guide contains the descriptions of the software control registers of the EP9442 silicon.

The chip provides an IIC serial bus interface (SCL/SDA pins) for MCU to access the HDMI control/status registers and Repeater control/status registers. The IIC address for HDMI control/status registers is “110_IICA_100x” and the IIC address for Repeater control/status registers is “110_IICA_101x”(where x=1 for read and x=0 for write). IICA is programmable by connecting a pull-up (logic 1) or pull-down (logic 0) resistor at MCLK pin.

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