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. 20, 1987
Filed:
May. 03, 1983
Richard K Hester, Whitewright, TX (US);
Khen-Sang Tan, Plano, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A microprocessor system includes a CPU device with on-chip or off-chip memory, and data and control busses for accessing memory and/or peripherals. The peripheral circuitry includes one or more channels for input and/or output of data, wherein various characteristics of the treatment of data in the channel are controlled by the program being executed in the CPU. In one embodiment analog input and output channels are included, and the A-to-D or D-to-A conversion rates are selected by executing a data output instruction by the CPU. The cut-off points of the filters are likewise selected. The A-to-D converter loads a first-in first-out memory which is read by the CPU in burst mode when filled. Likewise, the CPU loads digital data to a first-in first-out memory in the output channel, and then the D-to-A converts at its selected rate.