The ASMedia PCIe product ASM2812 is a packet switch that offers a range of features and capabilities to enhance high-speed IO systems. With a low latency, low-cost, and low-power design, it's ideal for various applications, including servers, storage systems, and communication platforms.
The ASM2812 integrates an upstream PCIe Gen3x4 interface with options for 1-, 2-, or 4-lane connections to root ports. This interface supports transfer rates of 2.5Gb (250MB/s), 5Gb (500MB/s), or 8Gb (1GB/s) per lane. On the downstream side, it features an 8-lane PCIe 3.1 interface that supports up to 6 PCIe ports.
The chip offers support for power-saving states, including L0s, L1, L2, and L3, as well as L1 substate deep power saving mode. It also includes wake-up functions in S3 and S4 states, and individual port control for disabling. The ASM2812 supports Link Training and Status State Machine (LTSSM) on both upstream and downstream ports.
It incorporates features like Advanced Error Reporting (AER), Single Root I/O Virtualization (SR-IOV), and supports the SRIS protocol on both upstream and downstream ports. The maximum payload size is 512 bytes, and it also supports hot-plug and surprise removal.
Overall, the ASM2812 by ASMedia serves as a versatile and efficient solution for building high-speed IO systems, providing the necessary connectivity, power management, and performance features required for modern computing platforms.
