ExpressLane™ PCI Express-to-PCI/PCI-X Bridge is a high performance bridge that enables designers to migrate legacy PCI and PCI-X bus interfaces to the new advanced serial PCI Express™ interface. This flexible device supports forward and reverse bridging, and also supports transparent bridging.
The ExpressLane™ PEX8114 provides a flexible bridge solution that enables migration from legacy PCI and PCI‑X buses to PCI Express. It supports both forward and reverse transparent bridging, automatic lane reversal, hot‑plug, and power‑management features, all in a compact 17 mm × 17 mm BGA package.
Designed for motherboard, adapter‑board, mezzanine and remote‑expansion applications, the device can be used in forward mode to connect legacy PCI/PCI‑X devices to a PCI Express system, or in reverse mode to allow a PCI Express host to control legacy PCI/PCI‑X peripherals. Development tools and reference kits are provided to aid rapid design validation.
| Package | Standard 256‑pin Plastic BGA (17 mm × 17 mm) |
|---|---|
| Power Consumption | Low power — 2 W, no heat sink required |
| Core Supply Voltage | 1.0 V |
| PCI Express Link Width | x4 configurable as x1, x2 or x4 |
| PCI Express Lane Speed | 2.5 Gbps per full‑duplex lane |
| Maximum Payload Size | 256 bytes |
| PCI‑X Interface | 64‑bit at 133 MHz (also 100 MHz, 66 MHz) |
| PCI 3.0 Interface | 32 or 64 bits at 66, 50, 33 or 25 MHz |
| Message Signal Interrupt (MSI) Support | Yes |
The PEX8114 supports both forward and reverse transparent bridging, allowing legacy PCI/PCI‑X devices to connect to PCI Express systems and vice‑versa.
It is a low‑power device that consumes about 2 W and does not require a heat sink.
The device provides up to four full‑duplex PCI Express lanes, each operating at 2.5 Gbps, and can be configured as x1, x2, or x4.
It comes in a standard 256‑pin Plastic BGA package measuring 17 mm × 17 mm.