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CYUSB3014-BZXI Datasheet(PDF) 6 Page - Cypress Semiconductor |
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CYUSB3014-BZXI Datasheet(HTML) 6 Page - Cypress Semiconductor |
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6 / 45 page  CYUSB301X Document Number: 001-52136 Rev. *N Page 6 of 45 OTG Connectivity In OTG mode, FX3 can be configured to be an A, B, or dual-role device. It can connect to the following: ■ ACA device ■ Targeted USB peripheral ■ SRP-capable USB peripheral ■ HNP-capable USB peripheral ■ OTG host ■ HNP-capable host ■ OTG device ReNumeration Because of FX3's soft configuration, one chip can take on the identities of multiple distinct USB devices. When first plugged into USB, FX3 enumerates automatically with the Cypress Vendor ID (0x04B4) and downloads firmware and USB descriptors over the USB interface. The downloaded firmware executes an electrical disconnect and connect. FX3 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. EZ-Dtect FX3 supports USB Charger and accessory detection (EZ-Dtect). The charger detection mechanism complies with the Battery Charging Specification Revision 1.1. In addition to supporting this version of the specification, FX3 also provides hardware support to detect the resistance values on the ID pin. FX3 can detect the following resistance ranges: ■ Less than 10 ■ Less than 1 k ■ 65 k to 72 k ■ 35 kto 39 k ■ 99.96 k to 104.4 k (102 k2%) ■ 119 k to 132 k ■ Higher than 220 k ■ 431.2 k to 448.8 k (440 k2%) FX3's charger detects a dedicated wall charger, Host/Hub charger, and Host/Hub. VBUS Overvoltage Protection The maximum input voltage on FX3's VBUS pin is 6 V. A charger can supply up to 9 V on VBUS. In this case, an external overvoltage protection (OVP) device is required to protect FX3 from damage on VBUS. Figure 4 shows the system application diagram with an OVP device connected on VBUS. Refer to Table 7 for the operating range of VBUS and VBATT. Figure 4. System Diagram with OVP Device For VBUS Carkit UART Mode The USB interface supports the Carkit UART mode (UART over D+/D–) for non-USB serial data transfer. This mode is based on the CEA-936A specification. In the Carkit UART mode, the output signaling voltage is 3.3 V. When configured for the Carkit UART mode, TXD of UART (output) is mapped to the D– line, and RXD of UART (input) is mapped to the D+ line. In the Carkit UART mode, FX3 disables the USB transceiver and D+ and D– pins serve as pass-through pins to connect to the UART of the host processor. The Carkit UART signals may be routed to the GPIF II interface or to GPIO[48] and GPIO[49], as shown in Figure 5 on page 7. In this mode, FX3 supports a rate of up to 9600 bps. POWER SUBSYSTEM EZ-USB FX3 1 8 2 3 4 5 6 7 9 VBUS GND SSRX- SSRX+ SSTX- SSTX+ D- D+ OTG_ID OVP device |
Similar Part No. - CYUSB3014-BZXI |
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Similar Description - CYUSB3014-BZXI |
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