The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 1978
Filed:
Oct. 30, 1975
Thomas C Daly, Phoenix, AZ (US);
Edward C Hepworth, Chattanooga, TN (US);
Rodney J Means, Manassas, VA (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
An integrated circuit synchronous data adaptor (SSDA) provides a bidirectional interface for synchronous data interchange. Internal control and interface logic including first-in-first-out (FIFO) buffer memory enables simultaneous transmitting and receiving of standard synchronous communication characters to allow data transfer between serial data channels and the parallel bidirectional data bus of a bus organized system such as a microprocessor (MPU) system. Parallel data from the bus system is serially transmitted and received by the SSDA with synchronization character insertion and deletion, fill character insertion and deletion, parity generation and error checking. The functional configuration of the SSDA is programmed via the MPU system data bus during system initialization and can be reconfigured via program control during subsequent system operation. Programmable control registers provide control for variable word lengths, transmit control, receive control, synchronization control, and interrupt control. Status, timing and control lines provide peripheral unit or modem control.