1 Reply Latest reply on Apr 20, 2018 12:02 AM by hrtk

    HX3 clock supply domain in AN94150.

    morimoto-n_1534561

      Hello,

       

      I refer the AN94150 - Designing a SuperSpeed Hub Using HX3 with Optimized BOM,

      Table1 - HX3 power Domains describe that clock power supply is provided from AVDD12 via A10, D8 on 100-ball BGA.

      But in the data sheet, D8 is classified as DVDD12, which is correct?

      Also, if the D8 pin is DVDD12, which of the "USB3.0 TX" and "Core supply" in Table.1 belongs to the D8 pin?

       

      Link:

      AN94150 - Designing a SuperSpeed Hub Using HX3 with Optimized BOM(Document No. 001-94150 Rev.*B)

      http://www.cypress.com/file/139481/download

        • 1. Re: HX3 clock supply domain in AN94150.
          hrtk

          Hi,

           

          Your point out is great.

          In terms of BGA package, D8 is DVDD12 (core supply) and A10 is AVDD12.

          That's why, it is Application Note mistake. We are sorry.

          We will fix it immediately.

           

          FYI:

          In terms of 68QFN and 88QFN package, the pad of D8 is internally shorted with pad of A10.

          Hence, for these 2 packages, the pin supply is AVDD.

           

          Best regards,

          Hirotaka Takayama