Digital subscriber line (DSL) modems supporting high-speed universal serial bus (USB) interfaces and related methods and computer program products

A computer program product for operating an ADSL modem, the computer program product comprising:

• a computer-readable storage medium having computer-readable program code embodied in said medium, said computer-readable program code comprising:
• computer-readable program code that processes control signals for initializing the ADSL modem during installation using a discrete multitone (DMT) modem module that comprises a digital signal processor (DSP);
• and
• computer-readable program code that transmits the processed control signals to a host controller of a host device.

A digital subscriber line (DSL) modem supporting a USB interface, the DSL modem comprising:

• a USB interface module (UIM) for interfacing with a USB transceiver electrically coupled to a host controller and processing a USB protocol, the USB transceiver managing a USB data transmission;
• and
• a discrete multitone (DMT) modem for interfacing with the UIM and modulating and/or demodulating transmission and/or reception data under a control of a digital signal processor (DSP);
• wherein the UIM includes a USB core unit module, a direct memory access (DMA) unit, a FIFO unit and a DMT interface module for providing an interface to the DMT modem, the USB core unit module storing data information from serial data transmitted from the USB transceiver, extracting and/or storing a data packet, and transmitting the data packet stored in the FIFO unit by the DMA module to the USB transceiver, the DMA module receiving an interrupt signal from the USB core unit module and extracting the data packet stored in the FIFO unit to transmit the extracted data packet to the DMT modem via the DMT interface module, or reading out data from the DMT modem and storing the read data into the FIFO unit via the DMT interface module.