Single chip USB to I2C interface, Up to 3.4MH z, high speed mode, I2C supported; Entire USB protocol handled on the chip. No USB specific firmware programming required.; Fully integrated 2048 byte multi-time programmable (MTP) memory storing device descriptors and CBUS I/O configuration.; Fully integrated clock generation with no external crystal required plus optional clock output selection enabling a glue-less interface to external MCU or FPGA.