PI7C8152BMAIE - 2-Port 66MHz PCI-to-PCI Bridge | Diodes Inc
MPN： PI7C8152BMAIE ✓ 啟用中PI7C8152BMAIE 概覽
A PCI-to-PCI bridge is a specialized interface IC that sits between two PCI bus segments and converts one bus's protocol, arbitration and electrical signaling into the other. In the system hierarchy it belongs to the PCI interface controller family, which sits between the CPU/memory subsystem and expansion peripherals. Bridges are used to add PCI slots beyond the limits of a single host bridge, to isolate electrical loading, and to allow two buses running at different speeds or loads to coexist.
Key features of the PI7C8152BMAIE include full 32-bit, 66 MHz PCI operation, two independent bridge ports, and backward compatibility with 33 MHz PCI agents. Operating at the full 66 MHz ceiling of the conventional PCI specification gives designers headroom for demanding video capture, storage controller, DSP and industrial data-acquisition cards without bandwidth arbitration penalties. The 160-pin quad flat package provides the pin count needed for the full 32-bit data path plus the auxiliary sideband signalling required by the PCI specification.
Internally, the device implements separate bus transceivers and arbitration logic for each of its two ports, so traffic crossing the bridge is buffered rather than simply passed through. That buffering decouples bus loading on the far side of the bridge from the near side, improving signal integrity and allowing each segment to support its own device population and clock domain discipline. Because it regenerates rather than re-times signals, the bridge isolates capacitive loading and reduces the stub effects that plague long shared PCI segments.
Typical applications include PCI-PCI bridges in industrial chassis, embedded PCI carrier boards, multi-segment server peripherals, video frame grabbers, RAID host adapters, and legacy industrial expansion systems where a single PCI segment cannot populate all required slots. It is also used in test and measurement platforms that need to isolate high-bandwidth DUT buses from the host system.
A key design consideration is that the PI7C8152BMAIE requires careful 32-bit PCI routing with matched-length, impedance-controlled traces and proper termination, plus correct peripheral ordering and isolation. Because the device is a legacy peripheral for the conventional PCI bus, confirm host-bridge and operating-system support for bridging before committing to a new design.
This page consolidates manufacturer specifications, distributor listings, drop-in alternatives and practical layout guidance for engineers who need to evaluate the PI7C8152BMAIE for an existing PCI bridge slot or a legacy PCI expansion platform.
直接替換替代品，適用於 PI7C8152BMAIE — 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。
PI7C8152MAIE
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PI7C8152BMAIE 最大額定值與電氣特性
| Device Type | PCI-to-PCI Bridge Interface IC |
| Number of Ports | 2 |
| PCI Bus Width | 32-bit |
| Maximum PCI Clock Speed | 66 MHz |
| 封裝 | 160-lead MQFP (28 x 28 mm) |
| Package Type | Quad Flat Package, surface mount |
| 腳位數 | 160 pins |
| 安裝類型 | Surface Mount |
| 資料速率 | 66 MHz maximum |
| Bus Architecture | PCI Conventional (32-bit) |
| Downstream Compatibility | Backward compatible with 33 MHz PCI agents |
| Number of I/O | 2 bridge ports |
| Supplier Device Package | 160-BQFP (28 x 28 mm) |
| Lead Time / Availability | Listed in stock by multiple authorized distributors as of 2026-11-05 |
PI7C8152BMAIE 160-bqfp (28 x 28 mm) 腳位配置指南
PI7C8152BMAIE（160-bqfp (28 x 28 mm) 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： PI7C8152BMAIE.
請參閱 資料表 以查看完整腳位配置。
典型應用
PI7C8152BMAIE 適用於 6 應用s: Legacy PCI Expansion Chassis, Video and Imaging Capture Systems, Industrial Data Acquisition, RAID and Storage Controller Expansion, Test and Measurement Bench, Embedded PCI Carrier Platforms.
Legacy PCI Expansion Chassis
The PI7C8152BMAIE is used to split a single conventional PCI segment into two independently driven buses inside industrial and legacy server chassis. Because each port buffers and regenerates signals rather than simply passing them through, downstream population on one segment does not degrade signal integrity on the other, which lets a designer populate dense slot carriers with video capture, digital I/O and storage controller cards. The 66 MHz rating keeps headroom for burst-heavy transfers, while backward compatibility with 33 MHz agents protects older plug-in cards still installed in the field. Where the mechanical envelope is tight, the 28 x 28 mm quad flat footprint integrates cleanly onto the same board as the host bridge.
推薦
Video and Imaging Capture Systems
Machine-vision and medical imaging systems that rely on 32-bit PCI frame grabbers benefit from the PI7C8152BMAIE because the full 66 MHz clock rate sustains sustained DMA throughput from multiple acquisition cards without contention. The two-port topology lets a designer isolate high-bandwidth capture traffic from a separate bus carrying codec, storage and control traffic, which reduces bus arbitration latency and jitter on the critical data path. Because the bridge buffers rather than re-times signals, capacitive loading from long card-edge connectors is contained on the downstream segment instead of propagating back to the host. Designers should still observe the PCI specification ordering and isolation rules when populating the capture segment.
推薦
Industrial Data Acquisition
In industrial measurement systems, the PI7C8152BMAIE allows a multi-channel acquisition front end to sit behind its own PCI segment, electrically separated from the supervisory bus carrying network management and storage traffic. The 66 MHz 32-bit path accommodates continuous streaming from high-rate digitizers while the 33 MHz backward compatibility keeps legacy sensor interface cards usable. Segmenting the bus shortens the physical reach over which each signal must travel, which lowers the risk of ringing and crosstalk on heavily populated carrier boards. Confirm the ambient temperature class and supply rails for your enclosure against the manufacturer recommended operating conditions before production release.
推薦
RAID and Storage Controller Expansion
The PI7C8152BMAIE is a natural fit for storage subsystems that need more PCI slots than the host bridge can offer, since the two downstream segments can each carry a set of disk controller cards at the full 66 MHz rate. Buffering across the bridge also allows hot-plug style controller combinations to be segmented from the boot and management path. For designs that migrate toward serial storage, the bridge can remain in place as a legacy compatibility segment while new traffic moves to multi-lane interfaces. Keep the downstream segments within the electrical loading budget of the conventional PCI specification and honour the ordering rules for shared-bus devices.
推薦
Test and Measurement Bench
Test platforms that add legacy PCI measurement hardware to a modern host often use the PI7C8152BMAIE to isolate the device under test bus from the controller and trigger buses. The 66 MHz rating lets high-rate digitizer and signal-generator cards transfer blocks without starving the rest of the system, while the second port lets supervisory traffic run on a separate, slower segment. Because the bridge does not re-time signals, the isolation is electrical and load-based rather than timing-based, which keeps the classic PCI timing model intact for legacy instrument firmware. Validation of ordering, isolation and load limits must follow the manufacturer reference design.
推薦
Embedded PCI Carrier Platforms
Embedded platforms such as industrial controllers and communications gateways that must accept legacy PCI mezzanine cards use the PI7C8152BMAIE as the host-side segment owner, providing two downstream 32-bit buses behind a single upstream port. The 160-lead quad flat package keeps routing density manageable on multilayer boards, and the 66 MHz capability covers the highest legacy bus rate without derating. Because the device is a mature conventional PCI peripheral, verify operating-system and BIOS bridging support for your target processor and confirm that no new-technology coexistence scheme is required. Component-level decoupling and reference plane continuity remain critical on carriers with long card-edge connectors.
推薦
推薦產品摘要
工程參考資料，適用於 PI7C8152BMAIE — 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 | PI7C8152MAIE |
|---|---|---|
| Package | 160-lead MQFP (28 x 28 mm) | 160-lead MQFP (28 x 28 mm) - same |
| Brand | Diodes Incorporated | Diodes Incorporated |
| Device Type | 2-Port PCI-to-PCI Bridge Interface IC | 2-Port PCI-to-PCI Bridge Interface IC |
| Maximum PCI Clock Speed | 66 MHz | 33 MHz (-49%) |
| PCI Bus Width | 32-bit | 32-bit |
| Number of Ports | 2 | 2 |
| Pin Count | 160 pins | 160 pins |
| Mounting Type | Surface Mount | Surface Mount |
| Downstream 33 MHz Agent Compatibility | Yes | Yes |
主要差異化特點
- Operates at the full 66 MHz conventional PCI ceiling (對比PI7C8152MAIE)
- Full 32-bit data path rather than a narrow subset (對比PI7C8152MAIE)
- Two independently buffered bridge ports (對比PI7C8152MAIE)
- Backward compatible with 33 MHz agents on the same segment (對比PI7C8152MAIE)
設計說明
Treat the PI7C8152BMAIE as a 32-bit wide bus and route the address/data lines as a matched-length group across the entire board. Keep the primary 32-bit data path on a single contiguous layer pair with a solid reference plane directly beneath it, and avoid splitting the bus across a layer change if possible. Because the bridge buffers rather than re-times signals, it cannot compensate for a badly implemented physical layer, so segment breaks, test points and stubs on the PCI data lines directly degrade eye margin.
Follow the ordering and isolation rules of the conventional PCI specification exactly when populating each downstream segment. Any device on a shared segment must observe the address/data interleaving order, and any device that is not part of the same transaction phase must be isolated. Reference the manufacturer datasheet pin-description table to confirm which bridge pins carry the sideband signals such as PAR, SERR and PME before assigning tracks; a swapped sideband connection produces intermittent enumeration failures that are very hard to debug.
Provide separate, well-decoupled supply rails for the core and the PCI interface as specified in the manufacturer recommended operating conditions, and place bulk plus high-frequency decoupling at each supply pin of the 160-lead quad flat package. Estimated: with 160 leads, the perimeter length of a 28 x 28 mm package is roughly 112 mm, so a single bulk capacitor will not cover the package; distribute local ceramic decoupling and keep vias close to the land pattern to limit loop inductance during the high di/dt switching events typical of bus traffic.
Keep the downstream segment stubs short and avoid long card-edge connector runs on the same segment as high-speed agents wherever the topology allows. The bridge isolates capacitive loading between its two ports, but each individual segment still has to respect the PCI 32-bit 66 MHz signal-integrity budget, including controlled-impedance routing over the referenced plane and matched length between the 32-bit data lines and their companion strobes. Where a long extension is unavoidable, add a repeater rather than relying on the bridge to recover the margin.
合規資訊
Compliance declarations for RoHS, REACH, lead-free and halogen-free status are published on the manufacturer product page and material declaration documents, which were not reproduced in the distributor listings consulted for this entry. Confirm the current declarations with the manufacturer before releasing a regulated design.
