The ASPEED AST2500 Go to product viewer dialog for this item.
represents a cornerstone in the evolution of modern data center infrastructure, serving as a 6th-generation Baseboard Management Controller (BMC) designed specifically for enterprise-level server management. Core Architecture and Performance
At its heart, the AST2500 utilizes an 800MHz ARM11 processor. A significant leap from its predecessors was the transition from DDR3 to DDR4 memory support, reaching speeds of up to 1600Mbps. This shift allows for the higher performance overhead required by increasingly complex modern server environments. Key Hardware Features According to official ASPEED documentation
integrates several critical modules for "headless" server operation:
Integrated 2D VGA: Provides local display capability via PCIe without requiring an additional VGA card.
Management Interfaces: Supports advanced BMC features including remote presence (iKVM) and virtual media.
Physical Specifications: The chip is typically housed in a 19mm x 19mm or 23mm x 23mm BGA package. aspeed ast2500 datasheet new
Expansion: It features a PCIe 2.0 interface and supports various storage and networking protocols. Deployment and Use Cases
is commonly found on professional motherboards from manufacturers like Gigabyte and ASRock Rack.
Remote Management: It allows administrators to monitor hardware health (temperature, voltage, fans) and perform remote power cycles even if the main OS is unresponsive.
Developer Support: It is a primary target for the OpenBMC project, which provides an open-source Linux stack for BMCs. AST2500 - ASPEED Technology
The ASPEED AST2500 is a cornerstone of modern data center infrastructure, serving as a 6th-generation Server Management Processor. As a specialized System-on-Chip (SoC), it functions as a Baseboard Management Controller (BMC), providing critical out-of-band management that allows administrators to monitor and control servers regardless of the operating system's state. Core Technical Specifications
According to the latest documentation from ASPEED Technology, the AST2500 introduces several key performance upgrades over its predecessors: The ASPEED AST2500 Go to product viewer dialog
Processor: Features an 800MHz ARM11 embedded CPU, providing the necessary horsepower for advanced remote management tasks.
Memory Support: Supports both DDR3 (800Mbps) and DDR4 (1600Mbps) SDRAM with a 16-bit data bus and optional ECC, accommodating up to 1GB of memory.
Graphics: Includes an on-chip PCIe 2D VGA controller capable of 1920x1200 resolution at 60Hz, eliminating the need for separate VGA add-on cards in server systems.
Connectivity: Equipped with dual 10/100/1000 Mbps MACs for dedicated or shared network access.
Interfaces: Supports modern protocols including PCIe Gen2, eSPI, and PECI 4.0. Strategic Importance in Server Management
The AST2500 is designed to operate independently of the host CPU, enabling "lights-out" management through the Intelligent Platform Management Interface (IPMI 2.0). AST2500 - ASPEED Technology Server Management : The AST2500 is primarily used
Server Management: The AST2500 is primarily used in servers for out-of-band (OOB) management, allowing administrators to monitor, control, and troubleshoot server systems even when they are powered off or unresponsive.
Data Center Infrastructure Management: In data centers, this BMC SoC can be used for comprehensive infrastructure management, including power management, environmental monitoring, and remote access.
Edge Computing: With its robust feature set, the AST2500 is also suitable for edge computing applications where remote management and monitoring are crucial.
The original AST2500 datasheets had ambiguous timing diagrams regarding the PERST# (PCIe Reset) and core power rails. The new datasheet explicitly states that the VDD_CORE (0.9V) must stabilize within 10ms of VDD_IO (3.3V) to prevent PCIe link training failures. This has caused boot loops in older designs; the new revision includes a recommended RC circuit schematic.
The ASPEED AST2500 is a 14nm (or 28nm depending on revision) system-on-chip (SoC) designed specifically for server management. It is the successor to the widely deployed AST2400 and is architecturally similar to the AST2510 and AST2520 variants (which focus on industrial automation).
Key Architectural Overview:
The "new" datasheet you are looking for likely clarifies the subtle differences between the A1 and A2 silicon revisions—critical information for hardware stability.
At first glance, the single-lane PCIe Gen 2.0 (500 MB/s) looks outdated. But the datasheet reveals its clever use: PCIe root complex mode. This allows the AST2500 to directly drive an NVMe SSD or a network controller without involving the host CPU. For edge servers or network appliances, this is a brilliant way to offload storage or packet processing.