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CYUSB3065-BZXI Datasheet(PDF) 6 Page - Cypress Semiconductor |
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CYUSB3065-BZXI Datasheet(HTML) 6 Page - Cypress Semiconductor |
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6 / 37 page  CYUSB306X Document Number: 001-87516 Rev. *L Page 6 of 37 USB Interface CX3 complies with the following specifications and supports the following features: ■ Supports USB peripheral functionality compliant with USB 3.0 Specification, Revision 1.0, and is also backward compatible with the USB 2.0 Specification. ■ As a peripheral, CX3 is capable of SuperSpeed, High-Speed, and Full-Speed. ■ Supports up to 16 IN and 16 OUT endpoints ■ Supports the USB 3.0 Streams feature ■ As a USB peripheral, CX3 supports USB-attached storage (UAS), USB Video Class (UVC), and Media Transfer Protocol (MTP) USB peripheral classes. As a USB peripheral, all other device classes are supported only in pass-through mode when handled entirely by a host processor external to the device. Figure 2. USB Interface Signals ReNumeration Because of CX3’s soft configuration, one chip can take on the identities of multiple distinct USB devices. When first plugged into USB, CX3 enumerates automatically with the Cypress Vendor ID (0x04B4) and downloads the firmware and USB descriptors over the USB interface. The downloaded firmware executes an electrical disconnect and connect. CX3 enumerates again, this time as a device defined by the downloaded information. This patented two-step process, called ReNumeration, happens instantly when the device is plugged in. VBUS Overvoltage Protection The maximum input voltage on CX3's VUSB pin is 6 V. A charger can supply up to 9 V on VUSB. In this case, an external overvoltage protection (OVP) device is required to protect CX3 from damage on VUSB. Figure 3 shows the system application diagram with an OVP device connected on VUSB. Refer to DC Specifications on page 17 for the operating range of VUSB. Note: The VBUS pin of the USB connector should be connected to the VUSB pin of CX3. Figure 3. System Diagram with OVP Device For VUSB EZ-USB CX3 VUSB SSRX- SSRX+ SSTX- SSTX+ D- D+ POWER SUBSYSTEM EZ-USB CX3 1 8 2 3 4 5 6 7 9 VUSB GND SSRX- SSRX+ SSTX- SSTX+ D- D+ OVP device |
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