The AST2500 has two dedicated Thermal Diode inputs (D1P/D1N). These are designed for reading CPU substrate diodes (transistor junction voltage). Do not plug a standard thermistor (10k NTC) into these pins—the biasing current is wrong. Use the standard ADC pins for thermistors.
Up to 14 independent I2C/SMBus controllers to interface with power supplies (PMBus), temperature sensors, EEPROMs, and smart batteries.
These interfaces collectively provide the hardware foundation for compliance, enabling complete remote management capabilities including power cycling, sensor monitoring, event logging, and out‑of‑band console access. Aspeed Ast2500 Datasheet
Features a 16KB Instruction Cache and a 16KB Data Cache.
The QEMU implementation supports most critical AST2500 peripherals: I²C, SCU, SRAM, SPI flash, USB 2.0, SD/MMC, watchdog, GPIO, UART, Ethernet, LPC, and the cryptographic engine. The AST2500 has two dedicated Thermal Diode inputs (D1P/D1N)
The datasheet lists the following external interfaces.
: Hardware Root of Trust utilizing cryptographic signatures to verify firmware validity. Use the standard ADC pins for thermistors
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.
The AST2500 has two dedicated Thermal Diode inputs (D1P/D1N). These are designed for reading CPU substrate diodes (transistor junction voltage). Do not plug a standard thermistor (10k NTC) into these pins—the biasing current is wrong. Use the standard ADC pins for thermistors.
Up to 14 independent I2C/SMBus controllers to interface with power supplies (PMBus), temperature sensors, EEPROMs, and smart batteries.
These interfaces collectively provide the hardware foundation for compliance, enabling complete remote management capabilities including power cycling, sensor monitoring, event logging, and out‑of‑band console access.
Features a 16KB Instruction Cache and a 16KB Data Cache.
The QEMU implementation supports most critical AST2500 peripherals: I²C, SCU, SRAM, SPI flash, USB 2.0, SD/MMC, watchdog, GPIO, UART, Ethernet, LPC, and the cryptographic engine.
The datasheet lists the following external interfaces.
: Hardware Root of Trust utilizing cryptographic signatures to verify firmware validity.
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.
