Ernest Wayne Powell

US Patent:

61784761, Jan 23, 2001

Filed:

Jan 5, 1998

Appl. No.:

9/002638

Inventors:

Ernest W. Powell - Sugar Land TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G06F 1338
H04L 2906
H04M 1100

US Classification:

710128

Abstract:

Serial data processor (16) includes a digital processor (106) , a memory controller (114) interconnected with digital processor (106), and dynamic serial access memory (112) interconnected with memory controller(134). First data selection circuit (134) sends serial data either from serial-data-in terminal (94), from dynamic serial access memory (112), or from digital processor (106) to second serial-data-in terminal (138), in response to a first control signal. Second data selection circuit (144) sends serial data either from serial-data-in terminal (138), from dynamic serial access memory (132) or from the digital processor to serial-data-out terminal (96), in response to a second control signal. A third data selection circuit (120) sends serial data either from serial-data-in terminal (94) , from dynamic serial access memory (112), or from the digital processor (90) to third serial-data-in terminal (150), in response to a third control signal. First, second and third data selection circuits (134, 144, 120) are multiplexers, each responsive to plural selection control signals.