ASPEED AST2500 is the 6th generation of Server Management Processors, functioning primarily as a Baseboard Management Controller (BMC)
. It is designed to provide integrated remote management and 2D graphics capabilities for modern server systems. ASPEED Technology Inc. Core Technical Specifications
The AST2500 introduces key performance upgrades over previous generations, specifically the transition to DDR4 memory support ASPEED Technology Inc. Processor: ARM11 CPU core operating at Memory Support: Supports speeds up to Maintains backward compatibility at Bus Width: 16-bit data bus width. Supports up to of SDRAM with an optional ECC feature. Interfaces with SPI flash memory for firmware storage. Networking: 10/100/1000 Mbps MAC (LAN) controllers. Integrated PCIe 2D VGA/2D Controller supporting resolutions up to 1920x1200 @ 60Hz ASPEED Technology Inc. Key Features and Capabilities Remote Management (iKVM):
Provides "Video-Over-IP" redirection up to 1920x1200 with YUV444/YUV420 compression. Virtual Media (USB-Over-IP):
Includes a USB 2.0 virtual hub controller that supports up to 5 virtual devices System Interfaces: support for high-speed host communication. Physical Packaging: Housed in a 456-pin TFBGA package (19mm x 19mm). Pin Compatibility: Shared footprint with related models ASPEED Technology Inc. Operational and Driver Support
The AST2500 is compatible with a wide array of enterprise operating systems through dedicated VGA and management drivers: ASPEED Technology Inc. Supports RHEL, SLES, Ubuntu, Fedora, and FreeBSD.
WHQL-certified drivers for Windows Server 2008 R2 and 2012 R2. Native driver support included. Typical Application Diagram AST2500 - ASPEED Technology aspeed ast2500 datasheet new
Table_title: AST2500 Table_content: header: | Product Name | AST2500 Advanced PCIe Graphics & Remote Management Processor | row: | ASPEED Technology Inc. Baseboard Management Controller (BMC)
The ASPEED AST2500: A Deep Dive into the 6th Gen Server Management Powerhouse
The ASPEED AST2500 remains a cornerstone in modern data centers, serving as the 6th generation of ASPEED Technology's world-class Server Management Processors. As a specialized Baseboard Management Controller (BMC), it provides the essential "always-on" intelligence required to monitor system health and manage servers remotely, independent of the operating system. Core Architecture and Performance
The AST2500 introduces significant performance leaps over its predecessors by integrating more powerful processing and faster memory support:
Processor: Features an 800MHz ARM11 core, designed to handle the increasing complexity of server system requirements.
Memory: Migrates to DDR4 1600Mbps support (also supporting DDR3L), allowing for up to 1GB of external memory. ASPEED AST2500 is the 6th generation of Server
Internal Bus: Utilizes a 128-bit internal DRAM data bus width to ensure high-speed data movement within the controller.
Graphics: Includes an on-chip PCIe 2D VGA engine, providing local display capabilities without the need for expensive add-on VGA cards. Key Technical Specifications
The official datasheet and technical manuals from partners like Supermicro and Gigabyte detail the chip's robust feature set: Feature Specification Package Size 19mm x 19mm Interface PCIe Gen2 x1, eSPI (default), LPC Memory Types DDR3L/DDR4 SDRAM (e.g., 128MBx16, 256MBx16, 512MBx16) Networking
Support for RGMII/NCSI for Gigabit Ethernet management ports Error Correction Supports ECC with no extra external memory cost Operating Temp
Standard commercial or industrial ranges (e.g., -40ºC to 70ºC for specific modules) Advanced Capabilities: IPMI and Beyond
The AST2500 is primarily used to implement the Intelligent Platform Management Interface (IPMI). This allows IT professionals to: OTP (One-Time Programmable) Memory Map: New guidelines for
Remote Management: Access, monitor, and diagnose servers via Console Redirection and Keyboard/Video/Mouse (KVM) over IP.
P2A Bridge: The chip includes a specialized "PCIe-to-AHB" (P2A) bridge, allowing the host CPU to access hardware resources within a 64KB range inside the BMC for shared memory applications.
Security: While robust, users should note historical vulnerabilities like CVE-2019-6260, which involved improper AHB bridge access, highlighting the importance of regular firmware updates. Software and Driver Support
ASPEED provides dedicated drivers to ensure the AST2500 integrates seamlessly with modern operating systems: AST2500 - ASPEED Technology
Following firmware attacks on servers (e.g., the "BMC AutoPilot" incidents), the new AST2500 datasheet de-emphasizes legacy debug modes. Key updates include:
For the analog VGA output (RGB), the new datasheet includes a reference schematic for 75-ohm termination using a THS7316 driver. It now explicitly states that direct connection to a VGA port is not supported without this buffer.