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TUSB1044A: TUSB1044 EQ setting by TPS65994AD

Part Number: TUSB1044A
Other Parts Discussed in Thread: TPS65994AD, TUSB1044,

Hi sir, 

I have some TUSB1044 EQ setting by TPS65994AD. 

I got to know TPS65994AD write 6666, 8888, aaaa, cccc at 0x9 and 0xa address. 

However, I don't know what 6666, 8888, aaaa, cccc mean?

Is 6=6dB EQ, 8=8dB EQ...etc?

Or is the number related to below table?

 

Besides, customer wants to set negative value EQ, is it possible, and what numbers I need to write in?

Thanks a lot!

 

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