Infineon CY7C65211-24LTXI, USB Controller, 3Mbps, USB 2.0, 3.3 V, 5 V, 24-Pin QFN

USB 2.0-certified, Full-Speed (12 Mbps)
Supports communication driver class (CDC), personal health care device class (PHDC), and vendor-device class
Battery charger detection (BCD) compliant with USB Battery Charging Specification, Rev. 1.2 (Peripheral Detect only)
Integrated USB termination resistors
Single-channel configurable UART interface
Data rates up to 3 Mbps
190 bytes for each transmit and receive buffer
Supports 2-pin,4-pin and 6-pin UART interface
Data format:
7 to 8 data bits
1 to 2 stop bits
No parity, even, odd, mark, or space parity
Supports parity, overrun, and framing errors
Supports flow control using CTS, RTS, DTR, DSR
Supports UART break signal
CY7C65211 supports single channel RS232/RS422 interfaces whereas CY7C65211A supports RS232/RS422/RS485 interfaces
Single-channel configurable SPI interface
Data rate up to 3 MHz for SPI master and 1 MHz for SPI slave
Data width: 4 bits to 16 bits
256 bytes for each transmit and receive buffer
Supports Motorola, TI, and National SPI modes
Single-channel configurable I2C interface
Master/slave up to 400 kHz
256 bytes each transmit and receive buffer
Supports multi-master I2C
CapSense®
SmartSense™

USB (Universal Serial Bus), Cypress Semiconductor

USB is a cable bus supporting data exchange between a host computer and a wide range of simultaneously accessible peripherals. There is a differential signal data interface for transmit and receive communication path. The bus includes power at 5 Volts.