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Hello community,
I'm using ccg3pa DVK for my product development, I'm using only main board for my development.
My requirement is :
1. Providing 3.3v on Dp and Dm lines.
Issue:
When I tried sourcing 3.3v by writing to the register " bch_det_0_ctrl /* 0x400a0700 */ ", It is giving me only ~3.1v output which is unexpected, it shall be 3.3v.
Please find respective captures below:
1. Setup being used for testing:
Scope captures:
1. with 3v3 on Dp,DM lines
2. with 0.6v on Dp,Dm lines:
Code being used:
In the above code snippet I'm using case 0 and case 1 for sourcing 3v3 on Dp,Dm lines which is not giving me the output voltage in expected range ie., supposed to be 3v3 but I'm seeing only 3.1v.
Is this voltage range expected? Anyway to source exact 3.3v on Dp,Dm lines ?
@Pranava_YN , This is in extension to Thread. In which you said that you're able to observe Dp voltage more than 3v, can you say me exact Dp voltage observeed ? Also please provide me your setup details ? like Is the power board is also connected or you're using only main board ?
Thanks in advance .
Best regards,
Pranay.
Solved! Go to Solution.
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Hi Pranay,
As you have specified, the DP DM outputs are around 3.1V (irrespective of the setup). This value is well within the QC specification and there should be no issue in applying these terminations. I will do some more tests at my end and get back to you in some time.
Pranava
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Hi Pranay,
As you have specified, the DP DM outputs are around 3.1V (irrespective of the setup). This value is well within the QC specification and there should be no issue in applying these terminations. I will do some more tests at my end and get back to you in some time.
Pranava