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Purpose of Regulator and Auxiliary Switch in Type-C to DisplayPort (DP) Cable Solution

Purpose of Regulator and Auxiliary Switch in Type-C to DisplayPort (DP) Cable Solution

Anonymous
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What is the purpose/need of a regulator and an auxiliary switch in Type-C to DisplayPort (DP) cable solution?

Can the be removed?

The Type-C to DP cable solution is operated from either VBUS or VCONN voltage. VBUS will be at 5 V but VCONN can change from 2.7 V to 5.5 V. VBUS and VCONN voltages are logically ORed and fed to the LDO to get a stable 3.3 V, which will power the CCG1 device. Therefore, the LDO is very essential in the design and it cannot be removed.

An auxiliary switch in a Type-C to DP cable solution is required to switch the Sideband Use (SBU1 and SBU2) signals upon the successful entry of the DisplayPort Alternate mode. Having Auxiliary switch in this design is mandatory.

 

 

Version: **

Translation - Japanese: USB Type-C DisplayPort (DP) ケーブルソリューションでのレギュレータと補助スイッチの必要性 - KBA97274 - Community Translated (JA)

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