I am using the IMX6 dual-lite.
We had test out the eye diagram.
The test supplier recommended that we increase the amplitude for the D+, D- at IMX6.
Is there any software method to achieve this result?
Hello Javier Wan,
It is possible to increase the D+/D- amplitude buy changing the termination resistors. There is more explanation of this on Application Note 4589 (link below)
Configuring USB on i.MX 6 Series Processors
There are several alternatives which allow for small adjustments. For example, you may change the high-speed driver current using the USBPHYx_TXn[D_CAL] bits. You can find a bit more on this alternative on the AN4589 and the specifics of this register in section 66.3.2 of the i.MX6Q Reference Manual (link below)
I hope this helps!
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