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USB EZ-PD™ Type-C Forum Discussions

jaxi_4346491
Level 1
Level 1

Dear Sir/Madam,

I tried to use a USB to I2C dongle to connect my PC with CY4533 BCR with slave address of 0x08. The I2C bitrate of the master is 100kHz.But I failed to connect. It looked that the clock was holden low for several pulses by the CY4533 before a narrow ack signal from CY4533. Finally the master failed to connect the CY4533. Can you please advice what happened and how I can connect to the CY4533 BCR. If you need more information, I will paste some waveforms tomorrow. Thanks in advance.

BR/

James

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1 Solution
YiZ_31
Moderator
Moderator
Moderator
1000 replies posted 750 replies posted 500 replies posted

Hi James,

I use Miniprog 3 to connect PC with BCR and can successfully read and write register. See my waveform below. Since CY4533 is a non-programable device, your USB to I2C dongle may be responsible for this.

Regards,

Eddie

TEK0000.JPG

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jaxi_4346491
Level 1
Level 1

I attach the waveforms. Please kindly help. Thanks.

The first part

tek00063.png

The second part

tek00064.png

BR/

James

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YiZ_31
Moderator
Moderator
Moderator
1000 replies posted 750 replies posted 500 replies posted

Hi James,

I use Miniprog 3 to connect PC with BCR and can successfully read and write register. See my waveform below. Since CY4533 is a non-programable device, your USB to I2C dongle may be responsible for this.

Regards,

Eddie

TEK0000.JPG

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Thanks a lot Eddie. Can you please advice the software you use with Miniprog 3 for the I2C communication? Can you please kindly provide the link?

BR/

James

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YiZ_31
Moderator
Moderator
Moderator
1000 replies posted 750 replies posted 500 replies posted

Hi James,

If you have installed PSoC Prgrammer, then you can find Bridge Control Panel in its folder.

Regards,
Eddie

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Thanks a lot, Eddie!

BR/

James

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Dear Eddie,

Now I am able to  access to the registers now. However, I cannot understanding the meaning of resitters. Can you please kindly share the register information? My email address is: rjxie@live.com. Thanks a lot.

BR/

James

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YiZ_31
Moderator
Moderator
Moderator
1000 replies posted 750 replies posted 500 replies posted

Hi James,

BCR HPI Spec can only be discovered under NDA now. You should talk to a local FAE to sign an NDA in order to get the doucument.

Regards,
Eddie

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