PI7C8140AMAE - PCIe-to-PCI Bridge | Diodes Incorporated
料号： PI7C8140AMAE ✓ 量产中PI7C8140AMAE 概述
A PCI-to-PCI bridge is an interface IC that translates transactions between unlike bus architectures. PCI Express uses serial, point-to-point links, while conventional PCI is a parallel, shared bus. The PI7C8140AMAE acts as the protocol and electrical boundary between these two domains, helping system designers retain PCI-compatible expansion equipment while upgrading the primary interconnect to PCIe. The verified product information describes the bridge as a two-port device with a 32-bit/66 MHz PCI interface.
The main verified differentiation is reversible operation. Instead of implementing only one fixed bridge direction, the PI7C8140AMAE can be configured for forward or reverse bridging. This flexibility is useful in test equipment, embedded platforms, industrial controllers, and legacy PCI cards that must interoperate with a PCIe host system. The physical implementation uses 128 leads in an FQFP package, providing the pin resources required by the bridge and its associated I/O and power connections.
The supplied distributor listings identify the part as a PCI-to-PCI Bridge Interface IC and explicitly describe it as a two-port bridge containing one PCI Express port and one 32-bit/66 MHz PCI port. They also identify a 128-FQFP, 14 x 20 mm package. Detailed operating limits, electrical characteristics, clocking requirements, power rails, signal names, and full pin assignments were not included in the verified dataset and therefore are not inferred here. Those values must be confirmed from the manufacturer datasheet before layout or qualification.
In a typical system, the bridge would sit between a PCIe root complex and a legacy PCI bus segment. The downstream PCI devices exchange parallel bus transactions with the bridge, while the bridge serializes those transactions for transmission over PCIe. Reversible configuration can also place the bridge in the opposite direction when the host and target roles require it. Correct clocking, reference-voltage, termination, decoupling, and trace routing remain essential in high-speed implementation.
This product page combines the verified distributor and manufacturer-linked data with package, sourcing, comparison, and design guidance that is not available as a single consolidated source. It also distinguishes confirmed facts from values that require the complete datasheet, helping engineers identify what can be used for initial component selection and what still needs verification before PCB release.
直接替换替代料： PI7C8140AMAE ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
PI7C8140AMA
✅ 直接替换📋 参考替代料（不在目录中）
PI7C8140AMAE 最大额定值与电气特性
| Product Type | PCI Express-to-PCI bridge interface IC |
| Bridge Port Count | 2 ports |
| PCI Express Port Count | 1 port |
| PCI Port Count | 1 port |
| PCI Bus Width | 32 bit |
| PCI Maximum Clock Frequency | 66 MHz |
| Bridge Direction | Configurable for forward or reverse operation |
| Package Type | 128-FQFP |
| Package Dimensions | 14 x 20 mm |
| 引脚数量 | 128 pins |
| 安装类型 | Surface mount |
PI7C8140AMAE 14 x 20 mm 引脚配置指南
PI7C8140AMAE（14 x 20 mm 封装）的引脚配置。 该功率器件具有栅极、漏极和源极端子。对于无极性封装，请参阅制造商数据手册以了解确切的引脚 1 方向和封装尺寸细节。常见应用包括电源设计、电机驱动和负载开关。
暂无详细引脚数据： PI7C8140AMAE.
请参阅 数据手册 以查看完整引脚配置。
典型应用
PI7C8140AMAE 适用于 6 应用s: Legacy PCI Expansion Systems, PCIe-to-PCI Test Equipment, Industrial Controller PCI Compatibility, PCI Express Migration Platform, Network and Communication Equipment, Legacy Adapter and Embedded Systems.
Legacy PCI Expansion Systems
The PI7C8140AMAE can connect one 32-bit/66 MHz PCI segment to a PCIe host while preserving compatibility with established PCI peripherals. Its verified one-PCIe-port and one-PCI-port arrangement makes it relevant where an industrial controller, test platform, or embedded system must support a legacy expansion card. The 128-FQFP package provides the interface pins required by the bridge. Before layout release, engineers must confirm PCIe link width, clock requirements, voltage rails, termination, timing margins, and software support from the complete manufacturer datasheet.
PCIe-to-PCI Test Equipment
The PI7C8140AMAE is a suitable candidate for test equipment that must place a conventional PCI device behind a PCIe interface. The verified 32-bit/66 MHz PCI port supports a high-performance legacy bus, while the separate PCIe port connects the bridge to newer host equipment. Its reversible operation also permits evaluation of forward or reverse bridging where instrument-control architectures require flexibility. A complete design review must still validate electrical characteristics, lane configuration, timing, reference clocks, and software-visible transaction behavior against the manufacturer documentation.
Industrial Controller PCI Compatibility
Industrial controllers that retain PCI cards can use the PI7C8140AMAE as a bridge between legacy PCI and PCIe connectivity. The verified one-PCIe-port and one-32-bit/66 MHz-PCI-port architecture allows the controller platform to modernize its internal backbone without immediately replacing every PCI peripheral card. Practical implementation requires careful examination of the legacy bus topology, arbitration, clock distribution, termination, isolation requirements, and environmental qualification. Those implementation details must be obtained from the full datasheet because they were not present in the verified search data.
PCI Express Migration Platform
The PI7C8140AMAE fits transitional platforms where PCIe is introduced at the host level but a 32-bit/66 MHz PCI subsystem remains necessary. The verified reversible bridge capability allows engineers to configure either forward or reverse operation, which is useful during architecture evaluation and subsystem integration. Migration designs must confirm whether the host and endpoint roles, power states, interrupts, bus arbitration, and transaction handling satisfy the intended system behavior. Detailed limits and configuration registers should be taken directly from the manufacturer datasheet and errata.
Network and Communication Equipment
Communication equipment with legacy PCI accelerator or network cards may use the PI7C8140AMAE to bridge those cards to a PCIe host fabric. The verified 32-bit/66 MHz PCI interface provides compatibility with conventional peripheral devices, while the PCIe side supports connection to a modern system backbone. Actual data-transfer performance depends on the bridge architecture, PCIe link configuration, latency, and software stack, none of which should be inferred from the distributor snippets alone. Signal-integrity and thermal reviews remain necessary before production deployment.
Legacy Adapter and Embedded Systems
The PI7C8140AMAE can serve as the central interface in a legacy PCI adapter or embedded conversion system where one side is PCIe and the other is a conventional PCI bus. Its verified 128-FQFP package provides a substantial number of connections, while reversible configuration can simplify prototype work across different host arrangements. Engineers should treat the package as requiring careful high-speed layout, verified power and ground distribution, and exact reference-clock implementation. The complete pinout and recommended application circuit must be obtained from the authoritative datasheet.
工程参考数据： PI7C8140AMAE ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PI7C8140AMA |
|---|---|---|
| Brand | Diodes Incorporated | Diodes Incorporated |
关键差异点
- Reversible PCIe-to-PCI bridge operation （对比 PI7C8140AMA)
- Explicit legacy PCI performance interface （对比 PI7C8140AMA)
- Verified package identification （对比 PI7C8140AMA)
设计说明
Do not begin the 128-FQFP layout from the package dimensions alone. Obtain the exact PI7C8140AMAE pin table, exposed-pad or thermal requirements, and manufacturer land pattern before defining pad geometry or via placement. The verified 14 x 20 mm package size is insufficient to determine high-speed trace escape routing, clock inputs, supply pins, or ground-return continuity.
Separate the PCIe and legacy PCI routing regions as far as practical, preserve continuous return paths, and apply the differential and termination rules specified by the complete datasheet. The bridge supports a 32-bit/66 MHz PCI port, so length matching, clock routing, impedance, and loading cannot be based on generic PCI assumptions. Confirm each interface's topology and electrical standard with the manufacturer documentation.
Do not treat PI7C8140AMA as an approved drop-in replacement solely because it is associated with PI7C8140AMAE in cross-reference search results. Verify all 128 pin assignments, ordering-code suffixes, electrical limits, lifecycle status, and qualification records. The supplied data does not quantify an electrical difference, so treating the suffix as cosmetic could create a sourcing or assembly mismatch.
Power and decoupling cannot be designed from the verified snippets because supply voltage and current values are unavailable. Obtain the complete power-supply sequence, current limits, rail tolerances, and recommended capacitor network from the manufacturer datasheet. Place required high-frequency bypass capacitors at the associated pins according to that guidance and preserve adequate thermal and power-return paths.
合规信息
The supplied verified data does not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals compliance. AEC-Q100 is marked not_applicable because this is a general-purpose interface bridge rather than an automotive-qualified part in the supplied data.
