Hello ALL ,
We want to use FPGA which captures video data from four ADV7441A.But I do not know How to connect the I2S between the FPGA and four ADV7441A.
Give me some help please .
Looking forward to your reply .
ADV7441A has multiple address maps in each IC so it's a lot of addresses per part which you can't change. You'd either need to use separate busses or you could use one bus and gate it at each part. Seems easier to use extra busses though.
I2S is just like the video bus, it's separate for each ADV7441A. You can't merge the output busses-- each ADV7441A chip needs it's own I2S bus to the FPGA.
If only 1 chip will be used at a time, you could connect them and keep all but one high-impedance. The ADV7441A allows you to tri-state the audio bus.
Thank you for your reply that is useful for me .
And then ,I have another question about the ADV7441A's I2C ,it's the same as ADV7441A's I2S ,can't merge the four I2C in one I2C that is in FPGA ?
ADV7441A may have I2C address ,and it may can be set I2C address.But it seems that the I2C address of ADV7441A can't be set,no pins for this . I want to let four ADV7441A work in 1 I2C.
Wish you success in your career and happiness of your family!
Thank you ,Dave.
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