Abstract: A high-speed transceiver apparatus is connected between a USB controller of a host and a peripheral device. The transceiver apparatus has a dual-port memory with a first data port and a second data port, a DMA unit providing a data transmission between the second data port and the peripheral device, and a processor controlling the data access of the dual-port memory for the peripheral device. When the USB controller of the host accesses the dual-port memory through the first data port, the processor commands the peripheral device to access the dual-port memory through the second data port. The DMA unit controls the data transmission between the dual-port memory and the peripheral device.

Abstract: The present invention relates to a method and apparatus universal serial bus (USB) physical layer. An UTM interface control logic receives a transmit data packet of USB 2.0 transceiver macrocell interface (UTMI). A transmit first-in first-out (FIFO) unit receives the transmit data packet output from the UTM interface control logic. A transmit unit receives the transmit data packet output from the transmit FIFO. An analog front-end (AFE) receives the transmitted data packet output of the transmit unit. A receive unit receives a receive data packet output from the AFE. A receive FIFO receives the receive data packet output from the receive unit and connected to the UTM interface control logic, whereby the receive data packet is output to the USB 2.0 transceiver macrocell interface.