龙芯 Manuals

Loongson 2F is an improved version of Loongson 2E, with higher I/O interface bandwidth and memory access bandwidth, supports software dynamic adjustment of processor operating frequency, and is compatible with MIPS64 instruction set.

This document is a user manual for Loongson 2E processor, which introduces the microarchitecture, instruction set overview, memory management, cache organization and operation, and CP0 control registers of the processor.

Loongson 3A processor user manual, introduces the overview, system configuration and control, secondary Cache, matrix transposition module, I/O interrupt, DDR2/3 SDRAM controller configuration, HyperTransport controller and other content of Loongson 3A processor.

This document is the datasheet of Loongson 2E processor, which introduces the interface signal description, system bus protocol description, DDR SDRAM control interface description, chip initialization process, electrical characteristics, thermal characteristics, pin arrangement and packaging, etc.