Michael P Moody

US Patent:

6523081, Feb 18, 2003

Filed:

Feb 18, 2000

Appl. No.:

09/506764

Inventors:

Magnus G. Karlsson - McKinney TX
Michael J. Moody - McKinney TX
Gregory Lee Christison - McKinney TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G06F 1338

US Classification:

710305, 710306

Abstract:

A USB function device ( ) for coupling to a USB host ( ). The USB function device ( ) comprises circuitry ( ) for providing a capability to the USB host, where the circuitry for providing a capability comprises an address space (VBUS). The USB function device ( ) further comprises a USB interface circuit ( ) coupled between the USB host and the circuitry for providing a capability to the USB host. The USB interface circuit ( ) comprises a memory area ( ) comprising a write endpoint ( ) accessible to the USB host for writing a plurality of bytes to the memory area via the write endpoint. The plurality of bytes comprise data information and protocol information. The write endpoint comprises an endpoint-type other than a control-type endpoint. The USB interface circuit also comprises circuitry for decoding ( ) the protocol information and circuitry for communicating the data information to the address space in response to the protocol information.

US Patent:

6760333, Jul 6, 2004

Filed:

Feb 18, 2000

Appl. No.:

09/507314

Inventors:

Michael J. Moody - McKinney TX
Magnus G. Karlsson - McKinney TX
Norayda N. Humphrey - McKinney TX
Gregory Lee Christison - McKinney TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H04L 1228

US Classification:

3703951, 370465, 375222

Abstract:

A Universal Serial Bus (USB) modem ( ) having two operating modes, namely Digital Subscriber Loop (DSL) mode and a voice-band mode, is disclosed. A USB interface device ( ) is coupled to a digital signal processor (DSP) ( ) and contains a shared memory ( ) in which USB endpoints are established for data communication. In the DSL mode, an ATM receive controller ( ) receives each ATM cell from the DSP ( ) and interrogates the ATM cell header to determine the virtual connection to the corresponding cell, and then forwards the payload portion of the ATM cell, but not the ATM cell header. In the voice-band mode, the ATM receive controller ( ) and ATM transmit controller ( ) operate in a simple streaming mode. A host interface controller ( ) is also provided, by way of which facsimile communications are carried out simultaneously with DSL communications, or in separate sessions relative to voice-band data communications.