Patent Number: 6,298,068

Title: Methods and apparatus for ISDN communications with dual mode access to interface apparatus on-board memory

Abstract: Improved ISDN interface apparatus and methods permit dual mode access to an on-board memory. A first memory controller is provided that responds to addresses in a first address range to read, write or otherwise access data in an "on-board" memory a first memory access mode. A second memory controller is provided that responds to addresses in a second address range to access data in that memory in a second memory access mode. Multiplexing circuitry selectively applies control signals from the first or second memory controllers to the memory, thereby, causing it to read, write or otherwise access data according to the first or second modes. The aforementioned first and second modes can constitute differing memory access modes. Thus, for example, first mode is a single-beat memory access mode, according to one practice of the invention. The second mode can comprise, on the other hand, for example, a burst mode.

Inventors: Shyu; Hann J. (Newport, RI)

Assignee: Telco Systems, Inc.

International Classification: H04Q 11/04 (20060101); H04L 012/66 (); G06F 012/00 ()

Expiration Date: 10/02/2018