PI7C8152AMAE - 2-Port 66MHz PCI-to-PCI Bridge | Diodes Incorporated
부품 번호: PI7C8152AMAE ✓ 활성PI7C8152AMAE 개요
A PCI bridge is a bus-controller IC that sits between two segments of the PCI Local Bus and manages arbitration, transaction forwarding, and the electrical buffering of shared signals. Within the taxonomy, PI7C8152AMAE is a PCI-to-PCI bridge, which is a type of PCI interface controller, which belongs to the broader class of bus interface ICs and therefore to the semiconductor and interface IC categories. Historically the Intel 21152 was the reference device for this function, and the PI7C8152 family was designed as its enhanced competitor.
Key differentiating features of the PI7C8152A include support for synchronous bus transactions between devices on the Primary and Secondary Buses operating up to 66 MHz, two independent Secondary Bus ports, 32-bit PCI data width, and operation from a single 3.3 V supply. The MAE suffix denotes the industrial/commercial temperature option supplied in the 160-pin MQFP industrial package. Unlike the PI7C8152B, the PI7C8152A supports synchronous transactions only.
Architecturally, the device combines separate primary and secondary bus controllers with a transaction scheduler, a 32-bit arbiter, and buffered address/data control lines. Buffering isolates the two bus segments electrically and lets the bridge absorb the loading of one extra bus level, which matters when several 32-bit expansion cards must share limited host-bridge fanout.
Typical uses include industrial and instrumentation PC expansion slots, medical imaging and diagnostic systems, legacy server and test-equipment chassis, RAID and storage controllers on secondary buses, and industrial field-bus gateways that still expose legacy PCI mezzanine connectors.
When designing around this device, verify that the target system still uses a 3.3 V PCI bus rather than the older 5 V signalling convention, and confirm the MQFP-160 land pattern and thermal pad requirements on the motherboard. Because the PCI Local Bus is a legacy architecture, supply continuity and long-term availability are the dominant procurement risks, so sourcing from a stocked distributor is usually advisable.
This page consolidates distributor availability, verified device specifications, pin-compatible bridge alternatives, and practical design and sourcing notes that are not consolidated anywhere in the original manufacturer datasheet.
드롭인 대체품: PI7C8152AMAE — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
PI7C8152BMAE
✅ 드롭인 ⚠️ 사양 미검증가격 문의
데이터시트 보기 →PI7C8152AMBE
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
PI7C8152BMBE
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
21152
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PCI6152-CC33BC
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PI7C8152AMAE 최대 정격 & 전기적 특성
| Device Type | Line / Bus Controller (PCI-to-PCI Bridge) |
| Number of Ports | 2 (one Primary Bus, two Secondary Buses) |
| PCI Bus Width | 32-bit |
| Maximum PCI Bus Speed | 66 MHz |
| 공급 전압 | 3.3 V |
| 동작 온도 | 0 to 85 C (32 to 185 F) |
| Package Type | 160-MQFP (28 x 28 mm) |
| 핀 수 | 160 pins |
| Standards Compliance | PCI Local Bus Specification Revision 2.2 (32-bit, 66 MHz implementation) |
| Transaction Support (PI7C8152A) | Synchronous bus transactions only |
| Transaction Support (PI7C8152B) | Synchronous and asynchronous bus transactions |
| Reference Device Comparison | Enhanced Intel 21152 comparison |
| Device Class | PCI Interface IC / Bus Controller |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant |
| Supply Configuration | Single 3.3 V supply |
| Primary Bus Operation | Up to 66 MHz synchronous |
| Secondary Bus Operation | Up to 66 MHz on each of two Secondary Buses |
| Bus Segments Bridged | 3 total (1 Primary + 2 Secondary) |
| Legacy Status | PCI Local Bus Revision 2.2 era interface; legacy architecture |
| Data Sheet Publication | Originally published 2003-09-22 |
| Datasheet File Size | 224 KB (per distributor listing) |
| Manufacturer Product Page | Diodes Incorporated PI7C8152A family page |
PI7C8152AMAE 160-mqfp (28 x 28 mm) 핀 구성 가이드
PI7C8152AMAE(160-mqfp (28 x 28 mm) 패키지)의 핀 구성입니다. 이 전력 소자는 게이트, 드레인, 소스 단자를 갖추고 있습니다. 비편향 패키지의 경우 정확한 핀 1 방향과 풋프린트 세부 정보는 제조사 데이터시트를 참조하십시오. 일반적인 응용 분야로는 전원 공급 장치 설계, 모터 구동, 부하 스위칭이 있습니다.
다음에 대한 상세 핀아웃 데이터 없음: PI7C8152AMAE.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
PI7C8152AMAE 적합 용도: 6 애플리케이션s: Industrial PC Expansion Chassis, Medical Imaging and Diagnostic Systems, Legacy Test and Measurement Instrumentation, RAID and Storage Controller Expansion, Industrial Field-Bus Gateways, PCI-to-PCI Carrier and Backplane Cards.
Industrial PC Expansion Chassis
The PI7C8152AMAE fits legacy industrial controllers that expose one PCI slot but need several 32-bit expansion cards for motion, I/O, or analog acquisition. By bridging one Primary Bus into two Secondary Buses at up to 66 MHz, it lets designers multiply usable PCI segment bandwidth without changing the host chipset or adding a second bridge. The 3.3 V single-supply operation and 0 to 85 C rating match indoor industrial enclosure temperatures, and the 160-pin MQFP (28 x 28 mm) package is a standard surface-mount footprint that qualified CMOs can assemble. The main design caveat is that the 'A' revision supports synchronous transactions only, so any downstream card relying on asynchronous PCI timing must be verified or replaced with a PI7C8152B variant.
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Medical Imaging and Diagnostic Systems
Diagnostic imaging and patient-monitoring systems built on legacy PCI architecture often need additional acquisition, DSP, or storage peripherals beyond what the host bridge can fan out. The PI7C8152AMAE provides two independent Secondary Buses at 32-bit width and up to 66 MHz, which is sufficient for 32-bit PCI data acquisition and interface cards used in ultrasound and spectroscopy platforms. The device's 0 to 85 C ambient rating and single 3.3 V supply simplify thermal design inside sealed medical carts, and its buffered bus isolation helps maintain signal integrity when multiple long legacy PCI card edges are populated. Because the PCI Local Bus Revision 2.2 architecture is a regulated-market concern, the long-term sourcing profile and second-source plan for this bridge should be documented early in the program.
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Legacy Test and Measurement Instrumentation
Bench instruments and ATE platforms built over the 2000s PC architecture often combine several PCI cards for data acquisition, timing, and RF measurement in one chassis. The PI7C8152AMAE allows such an instrument to keep a single host slot while driving two 66 MHz 32-bit Secondary Buses, preserving the legacy card ecosystem rather than forcing a platform migration. The buffered segmentation also helps isolate high-fanout PCI card edges, which is beneficial in chassis with long backplane traces. Design-wise, the 160-pin MQFP (28 x 28 mm) footprint requires careful via-in-pad or thermal-pad layout for assembly yield, and the synchronous-only transaction limitation of the 'A' revision should be checked against older asynchronous acquisition cards before release.
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RAID and Storage Controller Expansion
Server and storage appliances built on legacy PCI buses frequently need extra bus segments to attach channel controllers or cache modules. The PI7C8152AMAE bridges a 32-bit, 66 MHz Primary Bus into two Secondary Buses so that a single bridge chip can serve two separate storage domains, which simplifies board area and reduces the number of PCI trace bundles crossing the chassis. Bus buffering within the device improves drive strength and isolation on long card-edge runs, an advantage in dense backplane designs. The primary caveat is that the 'A' revision is synchronous-only, and legacy storage controllers using asynchronous transaction semantics may require a PI7C8152BMAE substitute, which shares the identical MQFP-160 land pattern.
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Industrial Field-Bus Gateways
Field-bus gateways that must support legacy PCI add-in cards alongside modern network interfaces often retain a PCI bridge to preserve installed PCI-based protocol adapters. The PI7C8152AMAE provides the two Secondary Buses needed to carry dual protocol cards while the host processor handles Ethernet or cellular uplinks over separate controllers. The single 3.3 V supply aligns with modern embedded host rails, and the 0 to 85 C rating suits sealed roadside or cabinet-mounted enclosures. On the mechanical side, the 160-pin MQFP (28 x 28 mm) package keeps the bridge in a compact surface-mount footprint suitable for multilayer industrial boards. Engineers should verify that no bridged card relies on asynchronous PCI transactions, since that is the principal functional difference between the 'A' and 'B' revisions.
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PCI-to-PCI Carrier and Backplane Cards
Carrier cards and passive backplanes that expand a legacy PCI slot into several card slots are the classic use environment for this bridge class. The PI7C8152AMAE fits directly on such a carrier, splitting one upstream Primary Bus into two downstream Secondary Buses and adding the buffering that a multi-slot card cage needs. Because the MAE variant is a 160-pin MQFP (28 x 28 mm) surface-mount part, it can be assembled alongside PCI connector fingers and passive termination networks on a four-layer card. Care must be taken with the recommended decouping and reference-plane continuity on both bus sides, and the 66 MHz, 32-bit limit of the bridge defines the maximum card population and trace length budget for each Secondary Bus segment.
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추천 제품 요약
엔지니어링 참조 데이터: PI7C8152AMAE — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | PI7C8152BMAE | PI7C8152AMBE | PI7C8152BMBE | 21152 | PCI6152-CC33BC |
|---|---|---|---|---|---|---|
| Package | MQFP-160 (28x28 mm) | MQFP-160 (28x28 mm) - same | MQFP-160 (28x28 mm) - same | MQFP-160 (28x28 mm) - same | MQFP-160 (28x28 mm) - same | MQFP-160 (28x28 mm) - same |
| Brand | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Intel | Broadcom |
| Device Type | 2-Port PCI-to-PCI Bridge / Bus Controller | 2-Port PCI-to-PCI Bridge / Bus Controller | 2-Port PCI-to-PCI Bridge / Bus Controller | 2-Port PCI-to-PCI Bridge / Bus Controller | PCI-to-PCI Bridge (reference device) | 32-bit PCI-to-PCI Bridge |
| PCI Bus Width | 32-bit | 32-bit | 32-bit | 32-bit | 32-bit | 32-bit |
| Maximum PCI Bus Speed | 66 MHz | 66 MHz | 66 MHz | 66 MHz | 66 MHz | 66 MHz (CC33 = 33/66 MHz class) |
| Number of Ports | 2 Secondary Buses (1 Primary + 2 Secondary) | 2 Secondary Buses (1 Primary + 2 Secondary) | 2 Secondary Buses (1 Primary + 2 Secondary) | 2 Secondary Buses (1 Primary + 2 Secondary) | 2 Secondary Buses | 2 Secondary Buses |
주요 차별점
- Same-footprint asynchronous transaction upgrade available without PCB change (vs PI7C8152AMAE vs PI7C8152BMAE)
- Dual Secondary Bus in a single bridge device (vs PI7C8152AMAE vs 21152)
- Single 3.3 V supply for 66 MHz 32-bit bridging (vs PI7C8152AMAE vs PCI6152-CC33BC)
- Single-vendor consolidation of the whole PI7C8152x option set (vs PI7C8152AMAE vs cross-brand PCI bridges (21152, PCI6152-CC33BC))
설계 노트
The PI7C8152AMAE uses a 160-pin MQFP with a 28 x 28 mm body and a fine pitch, so the land pattern must follow the manufacturer package drawing exactly, including the exposed-thermal-pad or center-pad treatment specified for the MAE suffix. Place the device centrally between the Primary and Secondary Bus trace groups so that the short, critical arbitration and clocking nets are not stretched across the board. Use a solid reference plane under the device with stitch vias around the perimeter to keep return paths continuous for the buffered bus signals at 66 MHz.
At 66 MHz, edge rates on the buffered PCI signals are much faster than the clock period suggests, so keep primary-to-secondary trace matching within a few mils and route clock and arbitration lines over continuous plane. Because the bridge buffers and re-drives the Secondary Bus, the Secondary Bus segment does not inherit the Primary Bus drive strength, so do not reduce terminator or pull-up networks on the downstream side without re-checking the bus rise time. For multi-slot card cages, use repeater/buffer devices such as the PCA9517DR on long segments rather than relying on the bridge alone.
The most common design error is assuming the PI7C8152A behaves like the PI7C8152B. The 'A' revision supports synchronous bus transactions only; if a bridged card relies on asynchronous transaction timing it will fail intermittently even though the bus enumerates. Second, verify that the target motherboard presents a 3.3 V, 32-bit, 66 MHz-capable PCI segment - legacy 5 V 32-bit signalling is not compatible. Third, confirm that all bridge configuration registers are set by the system BIOS or option ROM, since an uninitialized bridge can deadlock enumeration of both Secondary Buses.
The bridge runs from a single 3.3 V rail; decouple the supply pins with a combination of 0.1 uF ceramic and 4.7 to 10 uF bulk capacitance placed close to the pins on both the Primary and Secondary bus power planes. Because the MQFP-160 has no exposed-pad-free thermal relief plan unless specified, verify the thermal pad or heat-spreader copper area against the package drawing before committing to a 4-layer stack-up, since the 160-pin fine-pitch footprint otherwise restricts top-layer copper routing.
Estimated: the PI7C8152AMAE is a CMOS bus controller whose dissipation is dominated by dynamic switching on the buffered Secondary Bus lines; with tens of card-edge loads toggling at 66 MHz, board-level dissipation is typically modest (well under 1 W) compared with the system. Because the exact power dissipation figure was not available in the retrieved source data, treat this as a qualitative estimate: the practical thermal constraint is the MSL and reflow profile of the 160-pin MQFP, plus the copper area available for the central pad. Verify maximum junction temperature against the 0 to 85 C ambient rating in the worst-case chassis temperature.
규정 준수 정보
RoHS compliance is consistent with the Diodes Incorporated RoHS-compliant product catalog status for this part. The part targets the legacy PCI Local Bus Revision 2.2 architecture, which is neither AEC-Q100 automotive qualified nor typically marketed as a halogen-free or conflict-minerals-declared device; REACH, lead-free, and halogen-free status were not stated in the retrieved source data and are therefore reported as unknown.
