Documentation

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Xtensa Architecture White Paper - Find out more about the great modern architecture behind all of Tensilica's processor cores and why it helps deliver the lowest power and highest performance and code density in the industry.

Xtensa Instruction Set Architecture (ISA) Reference Manual - The Xtensa Instruction Set Architecture (ISA) is a new post-RISC ISA targeted at embedded, communication, and consumer products. This manual describes the Xtensa ISA - both the core architecture and the architectural options.

Xtensa LX4 Microprocessor Data Book and Xtensa 9 Microprocessor Data Book - These two manuals introduce the many features that comprise Tensilica's configurable and extensible Xtensa X9 and Xtensa LX4  processors. Topics in these manuals include memory-management model types, multiple processor (MP) features, Xtensa software development tools, Tensilica Instruction Extension language (TIE), Processor Interface (PIF), and much more. The Xtensa LX4 Micrprocessor Data Book also includes information about its added features, such as FLIX instructions and TIE ports and queues.