Author: HirotakaT_91 Version: *A
Question: Does CY4500 have VBUS-to-CC short protection?
Answer: There is no VBUS-to-CC short protection. Do not move the connector while cables are connected to avoid short between VBUS and CC lines.
Question: What are Cypress recommendations on how to connect CY4500 and Type-C devices?
Answer: To avoid any problems due to noise, Cypress recommends that you comply with the following procedure:
- Power on devices that will be connected to the CY4500 Type-C plug or receptacle.
- Connect CY4500 and a host computer with a USB micro-B cable to supply power.
- Connect the Type-C cable between CY4500 and Type-C devices.
Question: What does “Reserved” on Data Role field mean?
Answer: As per the USB Power Delivery (PD) Specification, the ‘Data Role’ field shall only be defined for SOP Packets. The Data Role field in case of SOP_PRIME packets is set as “Reserved”. The USB PD Specification mentions that “Reserved” is a keyword indicating reserved bits, bytes, words, fields, and code values that are set aside for future standardization.