Key facts
- Manuals
- 9
- Languages
- ZH
- Last added
- 2026-10-01
Featured Loongson manuals
Loongson CPU Development System Firmware and Kernel Interface Specification V2.2
This document specifies the address‑space layout, interrupt configuration, firmware‑to‑kernel parameter passing mechanisms, and SMBIOS implementation conventions for Loongson 2‑ and 3‑series CPU development systems. It includes both a general part and detailed appendices for specific board configurations.
The specification is intended for hardware designers and firmware developers who need to ensure compatibility between firmware, bootloaders, and operating system kernels across different Loongson platforms. This manual is written in Chinese.
Covers: Scope · Terminology and Definitions · Architecture Relationship · Address Space Specification · Interrupt Configuration Specification · Firmware and Kernel Interface Parameter Specification
Loongson V3.2 Chip Technical White Paper
The Loongson Technical White Paper (V3.2) provides a detailed description of the Loongson series of micro‑processors, covering the 1‑series small CPUs, 2‑series mid‑range CPUs, 3‑series high‑performance CPUs, and associated bridge chips. It outlines each chip’s functional features, technical characteristics, hardware development board systems, and recent development plans.
The document includes specifications for individual processors such as Loongson 1A, 1B, 1C, 1H and the 3‑series models, as well as information on interfaces, power consumption, manufacturing processes, and packaging. It also lists contact details for technical support and references to upcoming product road‑maps. This manual is written in Chinese.
Covers: Overview · Loongson 1 Series · Loongson 2 Series · Loongson 3 Series · Bridge Chip Series · Hardware Development Boards
Loongson 2K1000LA Processor Data Sheet
This data sheet provides a comprehensive overview of the Loongson 2K1000LA processor, including its architecture diagram, core features, and the many integrated controllers such as GPU, USB, SATA, and CAN. It also describes the chip’s hierarchical classification and naming conventions.
Detailed sections cover pin definitions, functional block descriptions, initialization power‑up sequences, electrical and thermal characteristics, mechanical package dimensions, and ordering information, giving designers all the data needed for hardware integration. This manual is written in Chinese.
Covers: Overview · Pin Definitions · Functional Description · Initialization Sequence · Electrical Characteristics · Thermal Characteristics
Loongson 1B Development Board User Manual
The Loongson 1B Development Board User Manual provides detailed information on the board's hardware resources, including CPU, memory, interfaces, and peripherals. It also explains how to set up a Linux development environment on a host PC, compile the PMON bootloader and Linux kernel, and flash them onto the board.
Additional sections cover application porting, a series of development experiments (e.g., ADC, PWM, networking), and extensive appendices with tool usage instructions such as Minicom, EJTAG, and NFS configuration. This manual is written in Chinese.
Covers: Preface · 1B Development Board Overview · 1B Development Board Usage · Setting Up Linux Development Environment on Host · Compiling Bootloader (PMON) and Linux · Flashing Bootloader (PMON) and Linux
Latest Loongson manuals
Loongson CPU Development System Firmware and Kernel Interface Specification V2.2
Application Note 43 pages · 1.1 MB · ZHSpecification defining address space, interrupt mapping, firmware‑kernel parameter passing and SMBIOS rules for Loongson CPU development systems.
Loongson V3.2 Chip Technical White Paper
Product Leaflet 62 pages · 7.8 MB · ZHTechnical overview and specifications of Loongson 1, 2, 3 series processors and bridge chips.
Loongson 2K1000LA Processor Data Sheet
Datasheet 101 pages · 2.6 MB · ZHThe Loongson 2K1000LA processor data sheet details its architecture, interfaces, electrical specs, and hardware design guidance.
Loongson 1B Development Board User Manual
User Manual 178 pages · 9.1 MB · ZHComprehensive guide for using the Loongson 1B development board, covering hardware, Linux setup, bootloader, and application examples.
Loongson GS264 Processor Core User Manual
User Manual 143 pages · 2.7 MB · ZHTechnical user manual describing the GS264 processor core’s instruction set, operating modes, memory management, cache, exceptions and coprocessor registers.
Loongson 3A3000/3B3000 Processor User Manual
User Manual 170 pages · 2.4 MB · ZHThe Loongson 3A3000/3B3000 processor user manual details architecture, registers, system configuration, and software programming guidance.
Loongson 1B Processor User Manual
User Manual 205 pages · 4 MB · ZHThe Loongson 1B Processor User Manual provides architecture overview, register descriptions, pin definitions, and detailed information on CPU, DDR2, LCD…
Loongson 3C5000L Processor Datasheet
Datasheet 157 pages · 5.8 MB · ZHThe Loongson 3C5000L processor datasheet provides interface details, electrical specs, and hardware design guidance.
Loongson KD-50-I Cluster System User Manual
User Manual 25 pages · 321 KB · ZHThe Loongson KD-50-I User Manual provides instructions for system configuration, compiler setup, MPI usage, and job management on the cluster.
Which document do I need?
Application Note
How to use the product for one specific task, with worked examples.
Datasheet
Ratings, dimensions and ordering codes, for selection and design work.
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in Loongson manuals
What is the default high‑end memory base address?
The default high‑end memory base address is 0x9000_0000.
From: Loongson CPU Development System Firmware and Kernel Interface Specification V2.2
How are DMA addresses mapped for the 7A bridge?
For the 7A bridge, DMA addresses are mapped 1:1 to physical memory addresses.
From: Loongson CPU Development System Firmware and Kernel Interface Specification V2.2
What is the core frequency of the Loongson 1A chip?
The Loongson 1A chip runs at 266 MHz.
How many USB2.0/1.1 ports does the Loongson 1A provide?
It provides four USB2.0/1.1 interfaces.
What is the naming rule for the Loongson 2K1000LA chip?
The chip name follows the pattern LS2K1000LA‑i, where “i” indicates the chip grade (commercial or industrial) and the rest encodes series and identification.
What is the maximum die attachment pressure for the 2K1000LA package?
The maximum allowable die attachment pressure is 15 kg.