Aspeed Ast2500 Datasheet May 2026

Core Processing and Memory

ASPEED AST2500 is a 6th-generation Baseboard Management Controller (BMC) System-on-Chip (SoC) designed to provide remote monitoring and management for high-performance host systems, such as servers and storage devices.

• Example: Pin D5 is "MAC2_RXCTL" / "GPIO D5" / "LPC_PD5".
• You must configure the "Function Select Register" (detailed in Chapter 20) to turn the pad into a network signal. Many failed board boots occur because the ROM code doesn't initialize the mux fast enough for PXE boot.

• Core Processor: ARM11-based (ARM926EJ-S variant) running up to 800 MHz.
• Package: 576-pin TFBGA (15x15mm).
• Temperature Range: Industrial (-40°C to +85°C) and Commercial (0°C to +70°C) variants exist.
• Process Node: 28nm (improved power efficiency over AST2400’s slower node).

4.2 Remote Management (KVM)

7. Typical Use Case (Server BMC)

| Interface | Details | |-------------------|--------------------------------------------------------------| | Ethernet MAC | 2x RGMII/RMII (10/100/1000 Mbps), supports NC-SI, MCTP | | PCIe | 1x Gen2 (5 GT/s), configurable as Root Complex or Endpoint | | USB | 2x USB 2.0 Host ports (with integrated PHY) | | UART | 6x (up to 921600 bps, one debug UART) | | I2C Bus | 8x (support SMBus, PMBus) | | SPI Master | 2x (up to 50 MHz) | | ADC | 8-channel, 10-bit, 1 MSPS (0-1.8V range) | | PWM / Fan Tach | 8x PWM + 8x tachometer inputs | | GPIO | Up to 208 pins (multiplexed with other functions) | Aspeed Ast2500 Datasheet

• Processor: ARMv7-A 32-bit processor
• Memory: Supports up to 128MB of DDR3/DDR4 memory
• Interfaces: 1x Gigabit Ethernet MAC, 1x USB 2.0, 1x UART, 2x I2C, 1x SPI
• Power Consumption: Low power consumption, typically < 5W
• Operating Temperature: -40°C to +85°C
• Package: 64-pin LQFP package