PI7C8952AFAE - Dual UART PCI Bridge | Diodes Incorporated
MPN： PI7C8952AFAE ✗ 停產PI7C8952AFAE 概覽
A PCI-to-UART bridge is an interface IC within the broader hierarchy of PCI interface controllers, peripheral interface controllers, interface ICs, and semiconductors. It provides the electrical and protocol translation required between a parallel PCI host bus and asynchronous serial channels. Such bridges are useful when a legacy PCI platform needs to communicate with sensors, modems, industrial controllers, or other equipment that uses UART signaling.
The verified product information identifies a two-channel UART configuration and a 128-byte FIFO for each function. FIFO buffering helps a host service received serial data without requiring the CPU to retrieve every byte immediately. The device can operate from either 3 V or 5 V supplies, which provides flexibility when integrating it with systems using different primary rail voltages. A 100-LQFP package offers a substantial pin count for power, ground, host-bus, and dual-channel UART connectivity.
The PI7C8952AFAE integrates PCI host-bus connectivity with two independent UART channels. Its architecture is intended to reduce the need for discrete host-interface logic while consolidating serial ports in one device. However, the supplied source data does not specify the supported PCI signaling mode, UART baud-rate range, parity and data-bit formats, interrupt behavior, electrical timing, or operating-temperature limits. Those parameters should be confirmed against the manufacturer datasheet before schematic capture or firmware development.
Typical uses include industrial PCI instrumentation, data-acquisition systems, test equipment, embedded control platforms, and legacy computer expansion systems. In each case, the bridge can connect a PCI host to two serial peripherals while the FIFO separates buffered receive data from direct host-bus transactions. The exact host-software configuration remains application-specific because an operating-system driver or platform-specific initialization routine may be required.
The principal design consideration is package and signal-integrity planning for the 100-pin LQFP. The board layout must preserve the device's power and ground connectivity, route PCI signals according to the manufacturer's recommendations, and keep UART signals away from noisy switching nodes. Decoupling, termination, and clock requirements should be implemented only after the complete pin assignments and electrical tables have been obtained from the official datasheet.
This page consolidates the verified product identity, package information, channel count, FIFO depth, supply options, sourcing links, and engineering-use guidance for the PI7C8952AFAE. It also separates documented facts from parameters that remain unavailable in the supplied data, helping engineers plan a search for the datasheet, evaluate procurement, and determine whether the dual-UART PCI bridge matches a legacy platform.
直接替換替代品，適用於 PI7C8952AFAE — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此產品無可直接替換的替代品。
申請替代品PI7C8952AFAE 最大額定值與電氣特性
| Device Type | PCI-to-UART dual UART I/O bridge |
| Number of UART Channels | 2 channels |
| UART FIFO Depth | 128 bytes per UART channel |
| Supply Voltage Options | 3 V or 5 V |
| Host Interface | PCI |
| 封裝 | 100-LQFP (14 mm x 14 mm) |
| Package Type | 100-TQFP |
| 腳位數 | 100 pins |
| Packaging Type | Tray |
| 安裝類型 | Surface mount |
PI7C8952AFAE 100-tqfp 腳位配置指南
PI7C8952AFAE（100-tqfp 封裝）的腳位配置。 此功率元件具有閘極、汲極與源極端子。對於非極性封裝，請參閱製造商資料表以取得確切的第 1 腳方向與佈局詳細資訊。常見應用包括電源設計、馬達驅動與負載切換。
無詳細腳位定義資料： PI7C8952AFAE.
請參閱 資料表 以查看完整腳位配置。
典型應用
PI7C8952AFAE 適用於 6 應用s: PCI Industrial Data Acquisition, Legacy PCI Test Equipment, Serial-to-PCI Communication Adapter, Automated Manufacturing Control, Medical and Instrumentation Interface, Embedded Service and Console Port.
PCI Industrial Data Acquisition
The PI7C8952AFAE is suitable for a PCI data-acquisition controller that must expose two serial links to instruments, sensors, or remote modules. Its dual-channel architecture consolidates two UART functions in one 100-LQFP device, while the documented 128-byte FIFO helps the PCI host service received data in blocks rather than one byte at a time. The bridge can therefore reduce host-side interrupt and buffering pressure. Before layout approval, engineers must confirm the precise interrupt behavior, UART timing limits, and pin assignments in the manufacturer datasheet.
推薦
Legacy PCI Test Equipment
The PI7C8952AFAE can add two asynchronous serial ports to a legacy PCI test system used to control instruments or communicate with service equipment. Two UART channels reduce the number of host-interface devices required on the expansion board, and the 128-byte FIFO provides temporary receive storage when the operating system services the bus at intervals. Because the supplied data does not confirm driver support or maximum baud rate, firmware and timing validation are essential before production use.
推薦
Serial-to-PCI Communication Adapter
The PI7C8952AFAE is appropriate for a communication adapter that converts two legacy UART peripherals into PCI bus devices. This arrangement lets a PCI host retain access to equipment using older asynchronous interfaces without requiring a dedicated peripheral card for every serial channel. The 3 V or 5 V supply support offers board-level flexibility, but the designer must verify which rails apply to each pin. A suitable host driver and deterministic interrupt handling are also needed for dependable data transfer.
推薦
Automated Manufacturing Control
The PI7C8952AFAE can support a PCI-based manufacturing controller that exchanges commands and status data with two serial motion, sensor, or actuator subsystems. Consolidating two UART channels on one device simplifies the PCI side of the design, while the 128-byte FIFO helps absorb bursts when the host is processing other tasks. Isolation and long-cable robustness depend on the external transceiver rather than the bridge itself, so applications requiring galvanic separation should add an appropriate isolated interface circuit.
推薦
Medical and Instrumentation Interface
The PI7C8952AFAE may be used in laboratory or medical-instrumentation hardware where a PCI computer must interface with two serial instruments. The dual UART configuration supports independent control and measurement links, and the FIFO provides buffering between serial traffic and PCI transactions. However, the supplied records do not establish medical-device certification, isolation, leakage current, or operating-temperature limits. Such designs require separate safety and environmental review and should not infer medical compliance from the interface function.
推薦
Embedded Service and Console Port
The PI7C8952AFAE can provide dual service or console connections for an embedded PCI platform. Two UART channels allow one port to handle operator input while another carries diagnostics or an auxiliary peripheral connection. The 3 V or 5 V operating options can simplify integration with multiple board power domains, although each pin's voltage requirement must be checked individually. The package's 100-pin footprint also requires adequate routing space, thermal consideration, and careful separation between communications and high-current circuitry.
推薦
推薦產品摘要
工程參考資料，適用於 PI7C8952AFAE — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| Device Type | PCI-to-UART dual UART I/O bridge |
| Brand | Diodes Incorporated |
| Package | 100-LQFP (14 mm x 14 mm) |
| Number of UART Channels | 2 channels |
| UART FIFO Depth | 128 bytes |
| Supply Voltage | 3 V or 5 V |
| Host Interface | PCI |
| Shipping Format | Tray |
| Number of Pins | 100 pins |
主要差異化特點
- Two UART functions consolidated in one PCI interface device (對比Single-channel UART implementations)
- Dual supply-voltage flexibility (對比Single-rail bridge implementations)
- Established high-pin-count surface-mount integration (對比Smaller dual-UART bridge packages)
設計說明
Base the layout on the manufacturer's 100-LQFP land pattern rather than reconstructing it from package dimensions alone. Place the required input and output bypass capacitors next to their associated power pins, maintain a continuous ground reference beneath and around the device, and avoid placing sensitive UART traces directly beside high-current switching paths. Because the supplied excerpts do not contain the pin table or reference layout, final trace widths, via counts, and capacitor locations must follow the official datasheet.
Treat the PCI side as a defined high-speed interface and the UART side as a digital signaling interface with its own timing constraints. Keep PCI routing short, provide the prescribed return path, and avoid splitting ground planes beneath the bridge. Do not infer acceptable trace geometry, terminations, or impedance targets from the 100-LQFP package name; obtain the PCI electrical tables and reference layout before release to manufacturing.
Do not assume that the 3 V or 5 V label permits either supply on every pin. The listing confirms both supply options, but it does not identify core, I/O, or auxiliary rail pins. Similarly, the 128-byte FIFO value does not establish whether receive and transmit depths are separately specified. Review the datasheet pin table, timing characteristics, reset requirements, clock requirements, and driver-support information before finalizing the schematic and firmware.
合規資訊
The supplied verified product listings do not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is not applicable to this general-purpose interface bridge based on the available product information.
