UM_INAP375R Revision 1.2_A1 Inova Semiconductors Confidential Page 5 of 37
User Manual
2.0 Functional description
2.1 Video path
The APIX2 ADK Transmitter board offers video input from two independent HDMI/DVI sources. Both HDMI/DVI
inputs are converted to parallel RGB data (24 Bit color depth). The parallel RGB signals are converted to 3-lane
(18Bit) or 4-lane (24Bit) LVDS video streams which are fed directly into the INAP375T transmitter device. Al
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ternatively 24Bit RGB data can be fed to the APIX pixel interface (assembly option).
Figure 2-1: APIX2 ADK Transmitter video path
All control functions as well as EDID informations of both HDMI/DVI devices can be controlled via I2C bus from
the on-board microcontroller.
2.2 Audio path
Audio information is taken from the HDMI/DVI streams. Audio data is processed via an ADC and a sample rate
converter to I2S TDM digital audio format and routed via the I2S input interface of the INAP375T device.
Figure 2-2: APIX2 ADK Transmitter audio path
Alternatively (assembly option) the I2S interface of one HDMI/DVI receiver can be directly fed to the APIX I2S
interface to support 7.1 audio formats.
2.3 Control path
All board functions are controlled via on-board microcontroller. The microcontroller is accessible via a software
GUI. For more information please refer to the APICO software user manual.
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