Diodes Incorporated
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Slimline PCIe-to-PCI Reversible Bridge

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Product Description

The PI7C9X111SL is the latest addition to the PCI Express Bridge SlimLine family of solutions. With the PI7C9X111SL, users can expect a x1 PCI Express to 32bit/66MHz PCI Reversible bridge with high performance, very low power consumption, and a small footprint. PI7C9X111SL offers the most effective forward & reverse bridging solution to platforms with high bandwidth requirement. The typical usage for this device is high volume applications requiring a “bridge” from legacy PCI products to new PCI Express based systems, or applications requiring a “bridge” from new PCI Express based devices to legacy PCI systems. The PI7C9X111SL is a versatile device that can be used in applications including desktops, graphics cards, combo cards, PC peripherals, MFP Printer and video surveillance systems. 

Industry Specifications Compliance

  • PCI Express Base Specification, Rev. 1.1
  • PCI Express CEM Specification, Rev. 1.0a
  • PCI Express to PCI/PCI-X Bridge Specification, Rev. 1.0
  • PCI-to-PCI Bridge Architecture Specification, Rev. 1.2
  • PCI Local Bus Specification, Rev. 3.0
  • PCI Hot-Plug Specification, Rev. 1.1
  • PCI SHPC and Subsystem Specification, Rev. 1.0
  • PCI Mobile Design Guide, Version 1.1
  • System Management (SM) Bus, Version 2.0
  • PCI Bus PM Interface Specification, Rev. 1.1
  • Advanced Configuration and Power Interface Specification, Rev. 2.0

Special Features

  • Fully Reversible
    • Forward – PCIe primary, PCI secondary o Reverse
    • PCI primary, PCIe secondary
  • Maximum Payload Size – Up to 512 bytes
  • Ultra Low Power Modes
    • Critical for mobile applications
  • Support for up to 4 PCI Bus Masters
  • Two level internal arbitration
  • GPIO Support 4 dedicated bi-directional
  • Typical Power: < 460mW
  • When external arbiter is used:
    • 4 additional outputs
    • 4 additional inputs
  • Masquerade support
    • User defined vendor, device, revision, subsystem device, and subsystem vendor ID
  • Large 10KB Buffer
    • 4KB for upstream reads, 2KB for downstream reads & 2KB for writes per port 
  • Access to Extended Configuration Registers From PCI side in Reverse Mode
  • Tiny 14 x 14mm, 128-pin QFP Package

PCI Express Features

  • Virtual Isochronous Support
    • Upstream TC 1 – 7 generation
    • Downstream TC 1 – 7 mapping
  • 16-bit CRC, LCRC (32-bit)
  • ECRC and Advanced Error Reporting
  • Error Forwarding (Data Poisoning)
  • Lane Reversal (Polarity Toggle)
  • VDDAUX Support (1.0V) 

PCI Features

  • 3.3V Signaling with 5V I/O Tolerance
  • PME# Support
  • 16-bit Address Decode for VGA
  • VAUX Support (3.3V)
  • Hot Plug Support
  • Subsystem Device and Subsystem Vendor ID
  • MSI and INT Support
  • SM Bus
    • PHY, data link, network layer, PEC, ARP, etc.
  • I2C Serial EEPROM Support

Product Specifications

Product Parameters

PCI Speed 66
PCI Bus Width 32
Ports 1 PCI
Lanes 1
Ambient or Junction Temperature (°C) -40 to 85

Technical Documents

Design tool model software

Recommended Soldering Techniques


Additional Technical Documents are available upon request: 
Application information, Design tool model software, Design kits, Evaluation board, and Other technical documents

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