Up to 16-channel, 10-bit resolution ADC for precise voltage and temperature monitoring.
Dual SPI Flash interface for redundant boot images (fail-safe firmware updates). 2. Integrated Graphics and Remote KVM Subsystem
Features a multi-channel 10-bit ADC engine used for monitoring precise system voltage rails, battery levels, and thermal thermistors.
The chip acts as a bridge between various communication protocols. According to technical discussions on , the AST2500 supports: Network Interfaces: Often paired with controllers like the Intel I210AT Realtek RTL8211E via RGRMII/NCSI for dedicated management traffic. LPC/eSPI Bridges: Essential for communicating with the host CPU and BIOS. UART/COM Ports: Providing serial console access for low-level debugging. 4. The Open Source Revolution: OpenBMC and u-bmc
The Aspeed AST2500 is a single-chip BMC that integrates multiple functions, including a 32-bit ARM Cortex-A9 processor, memory interfaces, and a rich set of peripherals. The chip supports a wide range of interfaces, including USB, UART, I2C, SPI, and PCIe, making it an ideal solution for managing complex server systems. The AST2500 is designed to operate in a variety of environments, with a temperature range of -40°C to 85°C and a voltage range of 3.3V to 5V. Aspeed Ast2500 Datasheet
Modern, low-voltage replacement for the LPC bus, allowing high-speed interfacing with newer Intel and AMD server platforms. Networking Interfaces
Table_title: AST2500 Table_content: header: | Product Name | AST2500 Advanced PCIe Graphics & Remote Management Processor | row: | ASPEED Technology Inc. AST2500 - ASPEED Technology
Designed as the modern, high-speed successor to LPC, allowing flash sharing, peripheral multiplexing, and rapid alert tunneling. 5. Industrial Controls and Telemetry Monitoring
The AST2500 datasheet distinguishes between silicon revisions, which is critical for hardware designers. The suffix represents the second major stepping of the chip: Up to 16-channel, 10-bit resolution ADC for precise
Two built-in 10/100/1000 Mbps Gigabit Ethernet MACs.
Native PCI Express support (PCIe 2.0 x1 upstream interface). Supports various internal connectors including , SMBus, PMBus, and IPMB headers. Hardware monitoring for voltage, fans, and case intrusion. Software Support
Supports DDR3 and DDR4 SDRAM (16-bit interface). Memory Frequency: Up to 1600 Mbps (DDR4). Maximum Capacity: Up to 1 GB of dedicated BMC RAM.
| Parameter | Specification | |--------------------|----------------------------------------------------| | Type | DDR4 / DDR3 / DDR3L SDRAM | | Max Speed | DDR4-1600, DDR3-1600 (800 MHz clock) | | Max Capacity | 2 GB (up to 4 devices, 16-bit bus) | | Bus Width | 16-bit (internal 32-bit via dual-rank? No, 16-bit only) | | ECC Support | No (AST2500 has no inline ECC; external optional) | | Voltage | 1.2V (DDR4) or 1.35/1.5V (DDR3L/DDR3) | Integrated Graphics and Remote KVM Subsystem Features a
Supports up to 1GB of total addressable system memory.
Engine for AES, DES, and 3DES encryption/decryption alongside SHA-1, SHA-224, and SHA-256 hashing.
Integrated 2D Graphics Adapter for basic VGA output. System Management: Supports IPMI 2.0 and iKVM.