PM8253B-F3EIS1

Overview

The PM8253B-F3EIS1 is a SmartIOC 2200e PCIe Gen 4 SAS-4 Tri-Mode IO Storage Controller manufactured by Microchip Technology. It features an integrated Switchtec PCIe switch supporting Gen 2, Gen 3, and Gen 4 speeds with up to x16 host connectivity and 32 tri-mode storage lanes. The device supports NVMe, SAS-4, and SATA media in RAID, HBA, or transparent modes. Key specifications include hardware root-of-trust for Secure Boot, IEEE 1619-compliant AES-XTS encryption, and Dynamic Channel Multiplexing (DCM) for bandwidth aggregation. It utilizes 16-bit DDR4 memory and is packaged in a 25 mm × 25 mm form factor.

Feature Summary

• Integrated Switchtec PCIe Gen 4 switch enabling low-latency NVMe connectivity with flexible port bifurcation down to x1.
• Hardware root-of-trust architecture providing Secure Boot and Secure Update capabilities for firmware integrity.
• Supports IEEE 1619-compliant AES-XTS data-at-rest encryption for SAS and NVMe drives.
• Dynamic Channel Multiplexing (DCM) aggregates bandwidth for lower-speed SAS/SATA drives over SAS-4 links.

Applications

• Enterprise server storage architectures requiring mixed NVMe and SAS topologies.
• Dense cloud storage solutions utilizing Dynamic Channel Multiplexed SAS-4 links.
• Universal Tri-Mode Backplane implementations with SFF-TA-1001 compliant drives.
• Hyperscale server environments needing high-performance IO aggregation.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm feature sets such as encryption support and memory configuration. Ensure compatibility with required operating system drivers and management utilities like maxView GUI or ARCCONF CLI before integration into the design.

Selection Notes

Select this controller for applications requiring up to 32 tri-mode storage lanes and x16 PCIe host connectivity. The 'e' variant indicates built-in encryption capabilities. Consider the 25 mm × 25 mm package size for board layout constraints. Evaluate the need for DCM if connecting legacy SAS/SATA drives to SAS-4 links for optimal bandwidth efficiency.

Part Context

This component belongs to the SmartIOC 2200 family of IO controllers designed for next-generation data center storage. It complements other Microchip devices like the SXP 24G SAS-4 expanders to provide comprehensive storage connectivity solutions. The family emphasizes security through hardware root-of-trust and versatile media support across NVMe, SAS, and SATA protocols.

Replacement Considerations

Consult the official datasheet for pin-compatible or functionally equivalent alternatives within the SmartIOC 2200 series, such as the PM8252B-F3EI for non-encryption variants. Verify that any substitute maintains the required PCIe Gen 4 switch capabilities and encryption standards.