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TUSB4020BI-Q1: 引脚内部上拉电阻问题

Part Number: TUSB4020BI-Q1
Other Parts Discussed in Thread: TUSB4020BI

Dear Ti:

    tusb4020bi的某些引脚类型为PD和PU,但在Datasheet中未能查到上拉或下拉电阻的具体阻值范围,目前是用如下图所示的方式计算的最小上拉下阻值:3.3/225*1000k= 14.66k

    请问这个公式计算的PD或PU阻值是否正确,若不正确该怎样计算?计算时应该注意哪些具体条件,谢谢。