Nilay Mitash

US Patent:

6687779, Feb 3, 2004

Filed:

Jul 14, 2000

Appl. No.:

09/616105

Inventors:

Gordon L. Sturm - Dallas TX
Nilay Mitash - Murphy TX
Mohammad Jahidur Rahman - Dallas TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G06F 1314

US Classification:

710305

Abstract:

A bus interface device includes a parallel input configured to be coupled to a bus ( ), such as a primary PCI bus. The device also includes a parallel data output (TXD) and at least two control output nodes (TX_ER and TX_EN). Data control circuitry coupled to the control output nodes utilizes a coding scheme (e. g. , an 8B/10B scheme) to generate one of a set of control codes (e. g. , Idle, Extend, Normal Data and Error) to be provided to the control output nodes. The device also includes reset control circuitry that generates a specified sequence of control codes (e. g. , a sequence of Idles and Extends) on the control outputs. This sequence can be used to communicate information such as a signal (e. g. , reset signal) and/or a mode (e. g. , a CRC mode).