18892677. STREAMING ENGINE WITH DEFERRED EXCEPTION REPORTING (TEXAS INSTRUMENTS INCORPORATED)
STREAMING ENGINE WITH DEFERRED EXCEPTION REPORTING
Organization Name
TEXAS INSTRUMENTS INCORPORATED
Inventor(s)
Joseph Zbiciak of San Jose CA (US)
Timothy D. Anderson of University Park TX (US)
Duc Bui of Grand Prairie TX (US)
STREAMING ENGINE WITH DEFERRED EXCEPTION REPORTING
This abstract first appeared for US patent application 18892677 titled 'STREAMING ENGINE WITH DEFERRED EXCEPTION REPORTING
Original Abstract Submitted
This invention is a streaming engine employed in a digital signal processor. A fixed data stream sequence is specified by a control register. The streaming engine fetches stream data ahead of use by a central processing unit and stores it in a stream buffer. Upon occurrence of a fault reading data from memory, the streaming engine identifies the data element triggering the fault preferably storing this address in a fault address register. The streaming engine defers signaling the fault to the central processing unit until this data element is used as an operand. If the data element is never used by the central processing unit, the streaming engine never signals the fault. The streaming engine preferably stores data identifying the fault in a fault source register. The fault address register and the fault source register are preferably extended control registers accessible only via a debugger.