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DP83822I: Bootstrap for CRS pin

Part Number: DP83822I
Other Parts Discussed in Thread: AM5746

Dear Technical Support Team,

CRS / CRS_DV has internal pullup(50kΩ) for bootstrap pin.

"Table 8-8. Recommended 4-Level Strap Resistor Ratios" describes RH=6.2kΩ and RL=1.96kΩ for mode3.

This pin is connected to PR2_MII0_CRS AM5746 and it has internal pullup or pulldown.

Could you tell me how to calculate considering the internal resistance of AM5746?

AM5746  Datasheet

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(6) Minimum PU = 900 Ω, maximum PU = 3.090 kΩ and minimum PD = 14.25 kΩ, maximum PD = 24.8 kΩ. For more information, see chapter 7 of the USB2.0 specification, in particular section Signaling / Device Speed Identification.

https://www.ti.com/jp/lit/ds/symlink/am5746.pdf?ts=1676951560873&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252Fja-jp%252FAM5746

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Best Regards,

ttd