PI7C9X3G808GPQ3HFCEX

Overview

The PI7C9X3G808GPQ3HFCEX is an automotive-grade PCI Express third-generation packet switch manufactured by Diodes Incorporated. It provides eight PCIe ports and eight lanes, operating within a temperature range of -40°C to +85°C. The device supports up to 15 downstream endpoints and features configurable upstream ports with lane counts up to sixteen. It includes adaptive equalization for signal integrity over traces exceeding 30 dB loss. Power consumption is rated at 2.9W, with typical forwarding latency under 150ns. The component utilizes a 196-pin HFCBGA package.

Feature Summary

• Supports elastic bifurcation for upstream and downstream ports to optimize bandwidth allocation.
• Integrates adaptive continuous time linear equalizer and decision feedback equalizer for RX signals.
• Provides advanced reliability features including end-to-end data protection and error handling mechanisms.
• Enables multi-host applications through Cross-Domain End-Point (CDEP) ports and DMA channels.

Applications

• Zonal Central Controllers
• Advanced Driver Assistance Systems (ADAS)
• Telematics units
• In-vehicle communication systems

Procurement Notes

Verify the specific ordering suffix 'X' indicates tape-and-reel packaging rather than tray distribution. Confirm AEC-Q100 Grade 3 qualification status and IATF 16949 manufacturing compliance before finalizing procurement orders. Ensure the selected variant matches the required pin count and thermal specifications for the target application design.

Selection Notes

Select this model when eight PCIe lanes are required for automotive environments. Compare against the PI7C9X3G816GPQ if sixteen lanes are necessary. Verify that the HFCBGA package dimensions fit the PCB layout constraints. Consider the power budget as the device consumes 2.9W during operation. Ensure software tools like PHY Eye and MAC Viewer are available for validation.

Part Context

This component belongs to the Automotive PCIe 3.0 Packet Switch family from Diodes Incorporated. Other members include the PI7C9X3G606GPQ, PI7C9X3G816GPQ, and PI7C9X3G1632GPQ. These devices share common architectural features but differ in port counts, lane capacities, and package sizes to suit various automotive electronic control unit requirements.

Replacement Considerations

No direct substitute part numbers are documented in the provided source material. Evaluate alternative switches based on lane count, package compatibility, and automotive qualification standards if replacement is required.

FAQ

What is the maximum payload size supported by this switch?

The device supports a maximum payload size of 512 bytes.

Does the PI7C9X3G808GPQ support hot-plug operations?

Yes, it supports serial hot-plug for both upstream and downstream ports, as well as surprise removal sequences.

How many Cross-Domain End-Point (CDEP) ports are available?

The switch supports up to three configurable CDEP ports for host-to-host communications and failover applications.