PI7C9X7958BNBE

Controllers Overview

The PI7C9X7958BNBE is a PCI Express to Octal UART bridge integrated circuit manufactured by Diodes Incorporated. It provides eight independent full-duplex UART channels over a single PCIe interface, packaged in a 160-pin LFBGA. The device supports operating supply voltages of 1.8 V and 3.3 V. It features 256-byte transmit and receive FIFOs per channel, automated hardware flow control, and compatibility with standard 16C450 UART registers. The component operates within an industrial temperature range of -40°C to +85°C.

Controllers Feature Summary

• Integrates eight independent full-duplex UART channels accessible via a single PCI Express link
• Supports both I/O mapped and memory-mapped register access modes for host communication
• Includes internal crystal oscillator capability and external clock input options
• Provides automated hardware flow control and configurable interrupt mechanisms

Controllers Applications

• Industrial automation systems requiring multiple serial connections
• Telecommunications infrastructure equipment
• Embedded computing platforms needing high-density serial expansion
• Data acquisition systems utilizing legacy serial protocols

Controllers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature rating. Confirm RoHS compliance status through the latest datasheet revision. Ensure the procurement channel is authorized to maintain product integrity and warranty coverage.

Controllers Selection Notes

Select this component when a system requires eight distinct serial ports connected via a PCIe bus. Verify that the host system supports the required PCIe configuration space access. Check that the available voltage rails match the 1.8 V and 3.3 V requirements specified in the electrical characteristics.

Controllers Part Context

This part belongs to the PI7C9X795x family of PCI Express to UART bridges from Diodes Incorporated (formerly Pericom). It serves as a high-density serial expansion solution, replacing discrete UART controllers and reducing board space. The BNBE suffix indicates the specific 160-pin LFBGA package variant designed for surface mount assembly.

Controllers Replacement Considerations

Consult the manufacturer's cross-reference list for verified substitutes. Ensure any replacement maintains identical pinout, register mapping, and power specifications to avoid redesign.