89H48H12G3YCHL

Overview

The 89H48H12G3 is a 48-lane, 12-port system interconnect switch optimized for PCI Express Gen3 packet switching. It delivers up to 96 GBps (768 Gbps) of aggregated, full-duplex switching capacity through 48 integrated serial lanes. Each lane supports 8 GT/s bandwidth and is compliant with the PCI Express Base Specification 3.0. The device integrates SerDes supporting 8.0 GT/s Gen3, 5.0 GT/s Gen2, and 2.5 GT/s Gen1 operation. It features a low latency cut-through architecture and supports maximum payload sizes up to 2 KB. Packaged in a 27mm x 27mm 676-ball FCBGA.

Feature Summary

• High-performance non-blocking switch architecture with low latency cut-through design
• Multi-root support enabling up to 12 fully independent switch partitions with dynamic reconfiguration
• Comprehensive reliability features including SECDED ECC protection on internal RAMs and end-to-end data path parity
• Flexible initialization options supporting Root complex, Serial EEPROM, pin strapping, or SMBus control

Applications

• Enterprise servers requiring high throughput inter-domain communication
• Storage arrays and intelligent I/O systems
• Communications infrastructure with multiple simultaneous peer-to-peer traffic flows
• Embedded systems utilizing standard PCIe Gen3 interconnect

Procurement Notes

Verify component authenticity by checking markings against official datasheet specifications. Confirm package type matches the 676-ball FCBGA format. Ensure compatibility with required PCIe Gen3 electrical standards. Review manufacturer documentation for any specific handling requirements related to moisture sensitivity levels.

Selection Notes

Select this component when designing systems requiring high-bandwidth, deterministic switching between multiple hosts or peripherals. It is suitable for applications needing partitionable architectures for multi-root support. Consider its power management capabilities, including ASPM and D-state support, for energy-efficient designs. Evaluate thermal performance within the specified operating temperature range.

Part Context

This component belongs to the IDT 89H series of PCIe switches, designed for high-performance system interconnects. It represents an evolution from Gen2 models like the 89H48H12G2, offering increased bandwidth via Gen3 compliance. The series targets enterprise environments demanding robust reliability and flexible configuration options for complex server and storage topologies.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Verify backward compatibility if replacing older Gen2 variants, noting differences in lane speed and feature sets such as ARI and ACS support.