To support complex Linux-based management stacks (such as OpenBMC), the AST2500 includes an upgraded, flexible memory controller.
Provides standard legacy interfaces to communicate with the host chipset for BIOS POST code monitoring and SuperI/O emulation.
Even with the release of the newer AST2600, the AST2500 remains highly relevant. It offers a perfect balance of cost, power efficiency, and a mature software ecosystem (such as OpenBMC). It is the primary BMC found in popular server lines from manufacturers like Supermicro, Tyan, and Gigabyte. Conclusion
ASPEED AST2500 is a server-management SoC integrating a multi-core ARM processor, a BMC-focused feature set (IPMI/KCS/Redfish-capable firmware platforms), graphics and video compression, extensive I/O for system management, and low-power operation for rack and edge servers. aspeed ast2500 datasheet new
Multiple UARTs, I2C, and SMBus for motherboard component monitoring (fans, voltages, temperatures). Why the AST2500 Remains Relevant in 2026
The is an ARM-based SoC (System on Chip) designed specifically for server management, often referred to as a BMC or IPMI (Intelligent Platform Management Interface) controller. It acts as a dedicated processor responsible for monitoring the physical state of a server—temperature, fan speed, power status, and operating system status—independent of the main CPU and OS. Key Highlights
For standard enterprise configurations, the hardware natively processes Intelligent Platform Management Interface (IPMI 2.0) messaging, Keyboard Controller Style (KCS) architecture, and Serial-over-LAN (SOL) data pipes. Summary Specification Table Specification Details ARM1176JZF-S up to 800 MHz RAM Support DDR3 / DDR3L / DDR4 (Up to 1GB) Display Resolution 1920 x 1200 @ 60Hz Host Interfaces PCIe 2.0 x1, eSPI, LPC Network 2x 10/100/1000 Mbps MAC (RGMII/RMII) Package 416-pin LFBGA Security Secure Boot, Cryptographic Hardware Accelerators To support complex Linux-based management stacks (such as
Operating completely out-of-band on its own power rail (V_AUX), the AST2500 remains operational and secure even if the host operating system is fully compromised or powered down. 6. Software and Ecosystem Support
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The AST2500 is a popular Baseboard Management Controller (BMC) used in servers, network switches, and industrial motherboards. Its datasheet is a technical reference for hardware engineers and firmware developers. It offers a perfect balance of cost, power
Any specific your hardware design must meet
Supports up to 1GB of DDR3 (800Mbps) or DDR4 (1600Mbps) SDRAM with a 16-bit data bus width and an ECC option.