Arrow DECA User Manual page 70

HDMI Config use I2C interface to configure HDMI transmitter, I2C HDMI Config contains
HPD(Hot Plug Detect) interrupt action. When HPD interrupt happens, the HDMI Transmitter will
be re-configure. HDMI transmitter needs to be properly configured before occupation. PLL and
Video Pattern Generator are designed to send video pattern to HDMI transmitter, the default
resolution setting of video pattern is FULL HD (1920*1080p). The resolution of video pattern could
be modified by adjusting the parameters of PLL and video pattern generator module. PLL and
Audio Generator are designed to transmit audio pattern to HDMI Transmitter, the audio transmitting
interface is using I2S in this demo.
 HDMI Transmitter(ADV7513) Register
Before you develop HDMI Transmitter, setting the video format and audio frequency in
Address(0x15) Register and the format of Address(0xAF) Register could save you lots of
developing time. When we use 48KHz Sampling Rate, the video format is 24
bit RGB 4:4:4. For more details, please refer to "ADV7513_Programming_Guide_R0."
 Audio Generator
The ADV7513 can accommodate from 2 to 8 channels of I2S audio at up to a 192 KHz sampling
rate. The ADV7513 supports standard I2S, left-justified serial audio, and right-justified serial audio.
Figure 5-16 shows the left-justified serial audio with I2S Standard Audio of 16 bit per channel.
DECA User Manual
Figure 5-15 Block Diagram of the HDMI TX Demonstration
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May 22, 2015