The Godson series processor chip is a processor chip with independent intellectual property rights developed by Loongson Zhongke Technology Co., Ltd. The products are mainly 32-bit and 64-bit single-core and multi-core CPU/SOC, mainly for national security, high-end embedded, personal Applications such as computers, servers, and high-performance machines. The product line includes three series of Godson No. 1 small CPU, Godson No. 2 CPU and Godson No. 3 big CPU. This article takes everyone to understand the features and hardware development system of the Godson 3 series. for reference only.
The Loongson 3 series processor integrates multiple 64-bit processor cores to meet high-end embedded computers, desktop computers, servers, high-performance computers and other applications with high bandwidth, high performance and low power consumption. At present, the Loongson 3 series products include Loongson 3A1000, 3B1500, 3A2000/3B2000 and 3A3000/3B3000 chips. The three chips use the same package design. The 3A3000/3B3000 package is backward compatible with 3A2000/3B2000 motherboards, and the 3A2000/3B2000 package is backward compatible with 3A1000 motherboards. The 3A3000/3B3000, 3B1500 and 3A1000 have basically the same signal pin definitions, but the power supply is the same. There are some differences in design.
Godson 3A1000 and 3B1500 adopt GS464 processor core structure; Godson 3B1500 adopts GS464V processor core structure with GS464 structure basically added vector and private L2 cache; and Godson 3A2000/3B2000, 3A3000/3B3000 adopts new GS464E processing The core structure is significantly improved compared to the GS464 architecture.
The Godson-3 series uses the HT bus as its IO bus and uses DDR2/3SDRAM with matching bandwidth as the memory bus.
The HT interface used by the Loongson 3 series supports IODMA data consistency. When using the device on the HT interface for DMA operations, the processor automatically maintains the consistency of the DMA data with the data in the processor cache. No software is required for the cache. The data is synchronized to greatly improve device access performance.
In addition, the Godson-3 series processors support the construction of multiprocessor systems via HT interconnects. The system is uniformly addressed and automatically maintains data consistency between processors. The multiprocessor system runs a NUMA operating system that directly scales system computing power and interface bandwidth.
Godson 3A1000 chip specifications
The existing Loongson 3 series development system has Loongson 3A+RS780E single-channel development system, Godson 3A2000+RS780E single-channel development system, Godson 3A3000+RS780E single-channel development system, Godson 3A2000+RS780E dual-channel development system, Godson 3A3000+RS780E Two-way development system, Godson 3A+2H single-channel development system, Godson 3A dual-channel development system, Godson 3B1500 single-channel development system. The specifications are as follows:
Godson 3A+RS780E single-channel development system structure
Godson 3A+2H single-channel development system structure
Godson 3A+2H development system hardware specifications
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