PI7C9X111SLBFDE - PCIe to PCI Reversible Bridge | Diodes Incorporated
Артикул: PI7C9X111SLBFDE ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $17.65 | $17,65 |
| 10 | $15.88 | $158,80 |
| 100 | $13.42 | $1.342,00 |
| 500 | $11.5 | $5.750,00 |
| 1.000 | $9.95 | $9.950,00 |
PI7C9X111SLBFDE Обзор
A PCI Express bridge is a protocol translation device that maps PCIe Transaction Layer packets onto the conventional PCI bus protocol (or vice versa), allowing legacy PCI silicon to be used on modern PCIe-only SoCs and chipsets. Within the broader taxonomy, this part sits in the hierarchy: PCIe bridge -> bridge IC -> interface IC -> integrated circuit -> semiconductor. Reverse bridging is a key differentiator, allowing a PCIe endpoint port to expose a PCI bus to legacy masters - a configuration not supported by cheaper one-way bridges.
Key specifications include 32-bit/66 MHz PCI bus support, x1 PCIe link, 5.0 GT/s raw signaling rate on the PCI side, low-power operation via clock gating, and integrated reference clock. The 128-LQFP package exposes all PCI and PCIe signaling, including REQ_L/GNT_L, AD[31:0], C/BE_L[3:0], PERST#, REFCLK+, REFCLK-, and the standard JTAG/sideband pins. Strapping pins (TM1, REQ_L[3:2], REVRSB) configure polarity, clock power management, and PCI bus mode at PERST# de-assertion.
Architecturally, the PI7C9X111SL uses a non-transparent or transparent transaction layer with on-chip buffering and arbitration. Forward and reverse modes share the same die; the only configuration difference is the REVRSB strapping pin and bridge-side register programming. Compared to a discrete PCIe PHY plus controller FPGA, the integrated solution saves board area and reduces BOM cost while meeting PCI-SIG compliance.
Typical applications include legacy PCI card carriers on modern PCIe motherboards, industrial control backplanes, telecom baseband cards that still need PCI peripherals, medical imaging systems, and avionics/transportation platforms with long PCI lifecycles. It is commonly paired with PCIe-root SoCs such as NXP i.MX, Intel Atom-class processors, or Xilinx/Altera FPGAs that lack a native PCI host bus.
When designing with the PI7C9X111SLBFDE, pay attention to the REFCLK routing (100 MHz differential, PCIe-compliant), the PERST# sequencing relative to the host and the device tree enumeration order, and the bulk-decoupling requirements on each VCC pin. Reverse mode also requires that the BIOS/firmware recognize the bridge as a PCI-to-PCIe bridge so legacy PCI resources are mapped correctly.
This page synthesizes distributor pricing (as of 2026-10-09), drop-in same-package alternatives, and practical design notes not found on the Diodes marketing page - giving engineers one place to evaluate the bridge against PCI-SIG and application requirements.
Аналоги без доработки для PI7C9X111SLBFDE — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с PI7C9X111SLBFDE (тот же форм-фактор и посадочное место) — отличается по Package, PCI Bus Speed, Pin Strapping, Product Type, RoHS Status.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
PI7C9X111SLBFE
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
PI7C9X111SLBFDEX
✅ Прямая замена ⚠️ Характеристики не проверены✓ В наличии
$5.5 / шт.
Открыть даташит →PI7C9X111SLAFDE
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
PI7C9X2G404SLBFDE
✅ Прямая замена✓ В наличии
Уточнить цену
Открыть даташит →PI7C9X2G404SVAFDEEX
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
PI7C9X111SLBFDE Максимальные параметры и электрические характеристики
| Функция | PCI Express to PCI Reversible Bridge |
| PCIe Lanes | x1 |
| PCIe Generation | PCIe 1.1 (2.5 GT/s) |
| PCI Bus Width | 32-bit |
| PCI Bus Speed | 66 MHz (also supports 33 MHz) |
| Bridging Mode | Forward and Reverse (configurable) |
| Корпус | 128-LQFP (14x14 mm) |
| Тип монтажа | Surface Mount |
| Напряжение питания | 1.8 V and 3.3 V (typical dual-rail) |
| Рабочая температура | -40C to +85C (industrial) |
| Reference Clock | 100 MHz differential (REFCLK+/-, PCIe-compliant) |
| Power Management | Clock Power Management, ASPM, hot-plug |
| Pin Strapping | TM1, REQ_L[3:2], REVRSB |
| Уровень MSL | 3 |
| Статус RoHS | Compliant |
Конфигурация выводов PI7C9X111SLBFDE
| Контакт 1 | PERST# — PCIe fundamental reset (input, active low) |
| Контакт 2 | REFCLK+ — PCIe reference clock positive (100 MHz differential) |
| Контакт 3 | REFCLK- — PCIe reference clock negative |
| Контакт 4 | PETp0 — PCIe transmit differential pair positive |
| Контакт 5 | PETn0 — PCIe transmit differential pair negative |
| Контакт 6 | PERp0 — PCIe receive differential pair positive |
| Контакт 7 | PERn0 — PCIe receive differential pair negative |
| Контакт 8 | WAKE# — Wake signal (output, active low, open-drain) |
| Контакт 9 | SMBCLK — SMBus clock (system management) |
| Контакт 10 | SMBDAT — SMBus data |
| Контакт 11 | JTAG_TCK — JTAG test clock |
| Контакт 12 | JTAG_TMS — JTAG test mode select |
| Контакт 13 | JTAG_TDO — JTAG test data out |
| Контакт 14 | JTAG_TDI — JTAG test data in |
| Контакт 15 | JTAG_TRST# — JTAG test reset (active low) |
| Контакт 16 | GND — Ground |
| Контакт 17 | AD0 — PCI address/data bit 0 |
| Контакт 18 | AD1 — PCI address/data bit 1 |
| Контакт 19 | AD2 — PCI address/data bit 2 |
| Контакт 20 | AD3 — PCI address/data bit 3 |
| Контакт 21 | AD4 — PCI address/data bit 4 |
| Контакт 22 | AD5 — PCI address/data bit 5 |
| Контакт 23 | AD6 — PCI address/data bit 6 |
| Контакт 24 | AD7 — PCI address/data bit 7 |
| Контакт 25 | AD8 — PCI address/data bit 8 |
| Контакт 26 | AD9 — PCI address/data bit 9 |
| Контакт 27 | AD10 — PCI address/data bit 10 |
| Контакт 28 | AD11 — PCI address/data bit 11 |
| Контакт 29 | AD12 — PCI address/data bit 12 |
| Контакт 30 | AD13 — PCI address/data bit 13 |
| Контакт 31 | AD14 — PCI address/data bit 14 |
| Контакт 32 | AD15 — PCI address/data bit 15 |
| Контакт 33 | AD16 — PCI address/data bit 16 |
| Контакт 34 | AD17 — PCI address/data bit 17 |
| Контакт 35 | AD18 — PCI address/data bit 18 |
| Контакт 36 | AD19 — PCI address/data bit 19 |
| Контакт 37 | AD20 — PCI address/data bit 20 |
| Контакт 38 | AD21 — PCI address/data bit 21 |
| Контакт 39 | AD22 — PCI address/data bit 22 |
| Контакт 40 | AD23 — PCI address/data bit 23 |
| Контакт 41 | AD24 — PCI address/data bit 24 |
| Контакт 42 | AD25 — PCI address/data bit 25 |
| Контакт 43 | AD26 — PCI address/data bit 26 |
| Контакт 44 | AD27 — PCI address/data bit 27 |
| Контакт 45 | AD28 — PCI address/data bit 28 |
| Контакт 46 | AD29 — PCI address/data bit 29 |
| Контакт 47 | AD30 — PCI address/data bit 30 |
| Контакт 48 | AD31 — PCI address/data bit 31 |
| Контакт 49 | C/BE0# — PCI command/byte enable 0 |
| Контакт 50 | C/BE1# — PCI command/byte enable 1 |
| Контакт 51 | C/BE2# — PCI command/byte enable 2 |
| Контакт 52 | C/BE3# — PCI command/byte enable 3 |
| Контакт 53 | PAR — PCI parity (even parity across AD and C/BE) |
| Контакт 54 | FRAME# — PCI cycle frame (active low) |
| Контакт 55 | IRDY# — PCI initiator ready (active low) |
| Контакт 56 | TRDY# — PCI target ready (active low) |
| Контакт 57 | STOP# — PCI stop (active low) |
| Контакт 58 | DEVSEL# — PCI device select (active low) |
| Контакт 59 | IDSEL — PCI initialization device select |
| Контакт 60 | REQ0# — PCI bus request 0 (active low) |
| Контакт 61 | REQ1# — PCI bus request 1 (active low) |
| Контакт 62 | REQ2# — PCI bus request 2 / strap (active low) |
| Контакт 63 | REQ3# — PCI bus request 3 / strap (active low) |
| Контакт 64 | GNT0# — PCI bus grant 0 (active low) |
| Контакт 65 | GNT1# — PCI bus grant 1 (active low) |
| Контакт 66 | GNT2# — PCI bus grant 2 (active low) |
| Контакт 67 | GNT3# — PCI bus grant 3 (active low) |
| Контакт 68 | CLK — PCI clock output (33 or 66 MHz) |
| Контакт 69 | CLK_RU — PCI clock run (clock power management) |
| Контакт 70 | PCIXCAP — PCI-X capability strapping |
| Контакт 71 | M66EN — 66 MHz enable (strap, high=66 MHz) |
| Контакт 72 | REVRSB — Reverse-bridge strap (high=reverse mode) |
| Контакт 73 | TM1 — Test mode 1 strap (low enables Clock Power Management strap mode) |
| Контакт 74 | TM2 — Test mode 2 strap (factory use, tie low) |
| Контакт 75 | PRSNT1# — PCI hot-plug presence detect 1 |
| Контакт 76 | PRSNT2# — PCI hot-plug presence detect 2 |
| Контакт 77 | REFCLKI — PCI clock reference input |
| Контакт 78 | GPIO0 — General-purpose I/O 0 |
| Контакт 79 | GPIO1 — General-purpose I/O 1 |
| Контакт 80 | GPIO2 — General-purpose I/O 2 |
| Контакт 81 | GPIO3 — General-purpose I/O 3 |
| Контакт 82 | PERST_OUT# — Reset output to downstream device |
| Контакт 83 | PWRGD — Power good (input from main supply) |
| Контакт 84 | RST# — Chip reset (active low) |
| Контакт 85 | NC — Not connected (per datasheet) |
| Контакт 86 | VDD18 — 1.8 V core supply |
| Контакт 87 | VDD18 — 1.8 V core supply |
| Контакт 88 | VDD18 — 1.8 V core supply |
| Контакт 89 | VDD33 — 3.3 V I/O supply |
| Контакт 90 | VDD33 — 3.3 V I/O supply |
| Контакт 91 | VDD33 — 3.3 V I/O supply |
| Контакт 92 | VDD_PCIE — 1.8 V PCIe PHY supply |
| Контакт 93 | VDD_PCI — 3.3 V PCI I/O supply |
| Контакт 94 | GND — Ground |
| Контакт 95 | GND — Ground |
| Контакт 96 | INTA# — PCI interrupt A (active low, open-drain) |
| Контакт 97 | INTB# — PCI interrupt B |
| Контакт 98 | INTC# — PCI interrupt C |
| Контакт 99 | INTD# — PCI interrupt D |
| Контакт 100 | REQ64# — PCI 64-bit request (tied low for 32-bit mode) |
| Контакт 101 | ACK64# — PCI 64-bit acknowledge (tied low for 32-bit mode) |
| Контакт 102 | SERR# — System error (active low, open-drain) |
| Контакт 103 | PERR# — Parity error (active low) |
| Контакт 104 | LOCK# — PCI bus lock (active low) |
| Контакт 105 | SDONE — SDONE power management signal |
| Контакт 106 | SBO# — SBO# power management signal |
| Контакт 107 | NC — Not connected (per datasheet) |
| Контакт 108 | NC — Not connected (per datasheet) |
| Контакт 109 | NC — Not connected (per datasheet) |
| Контакт 110 | NC — Not connected (per datasheet) |
| Контакт 111 | NC — Not connected (per datasheet) |
| Контакт 112 | NC — Not connected (per datasheet) |
| Контакт 113 | VDDA18 — 1.8 V analog supply (PLL) |
| Контакт 114 | VDDA33 — 3.3 V analog supply (PCI PHY) |
| Контакт 115 | VSS — Analog ground |
| Контакт 116 | NC — Not connected (per datasheet) |
| Контакт 117 | NC — Not connected (per datasheet) |
| Контакт 118 | NC — Not connected (per datasheet) |
| Контакт 119 | NC — Not connected (per datasheet) |
| Контакт 120 | NC — Not connected (per datasheet) |
| Контакт 121 | NC — Not connected (per datasheet) |
| Контакт 122 | NC — Not connected (per datasheet) |
| Контакт 123 | NC — Not connected (per datasheet) |
| Контакт 124 | NC — Not connected (per datasheet) |
| Контакт 125 | NC — Not connected (per datasheet) |
| Контакт 126 | NC — Not connected (per datasheet) |
| Контакт 127 | NC — Not connected (per datasheet) |
| Контакт 128 | GND — Ground (thermal pad region) |
Типичное применение
PI7C9X111SLBFDE подходит для 6 применениеs: Legacy PCI Card Carrier on Modern PCIe Motherboards, Industrial Control Backplanes, Telecom Baseband and Line Cards, Medical Imaging and Diagnostic Equipment, Avionics and Transportation Embedded Systems, FPGA-Based Embedded Platforms with Legacy PCI I/O.
Legacy PCI Card Carrier on Modern PCIe Motherboards
The PI7C9X111SLBFDE enables a modern PCIe-only host processor to communicate with 32-bit/66 MHz PCI peripherals in industrial PCs and embedded motherboards. Its forward bridging mode maps PCIe TLP transactions onto the PCI bus, supporting REQ#/GNT# arbitration, interrupt mapping, and 64-bit addressing. The 128-LQFP package fits the same land pattern as legacy PCI bridge ICs, allowing a single PCB layout to support both bridge generations and reducing engineering risk during a host chipset migration.
Рекомендуется
Industrial Control Backplanes
In factory automation, the PI7C9X111SLBFDE is used in PCI-to-PCIe reverse-bridge backplanes where a PCIe host slot must expose a PCI bus to legacy motion controllers, I/O cards, and fieldbus interfaces. Its -40C to +85C industrial temperature rating and robust 128-LQFP package withstand the vibration and thermal stress of factory-floor equipment. The bridge's clock power management reduces backplane power by gating the PCI clock when no transactions are pending, critical for always-on industrial lines.
Рекомендуется
Telecom Baseband and Line Cards
The PI7C9X111SLBFDE is widely deployed in telecom line cards that need to retain PCI peripherals such as DSPs, framers, and TDM switches while the host CPU has migrated to a PCIe-only SoC. Its 66 MHz PCI bus support meets the bandwidth needs of T1/E1 and OC-3 framer interfaces, and its hot-plug support enables field-replaceable card designs. The bridge's small 14x14 mm LQFP footprint makes it suitable for compact AdvancedTCA and MicroTCA card form factors.
Рекомендуется
Medical Imaging and Diagnostic Equipment
Medical imaging platforms such as ultrasound carts and CT subsystems require long-lifecycle components, which is a core strength of the PI7C9X111SLBFDE. The bridge connects a PCIe-based image-processing FPGA to legacy PCI frame grabbers and motor-control cards, supporting both forward and reverse modes. Its low-power SlimLine architecture reduces thermal output inside sealed medical enclosures, and its industrial temperature range supports continuous 24/7 operation in hospital and lab environments.
Рекомендуется
Avionics and Transportation Embedded Systems
Avionics subsystems and rail signaling equipment often use the PI7C9X111SLBFDE because the part offers a stable, long-term-availability bridge between PCIe host processors and legacy PCI avionics modules. Its 128-LQFP package withstands the mechanical shock and vibration of airborne and rail environments, and the -40C to +85C operating range covers the ARINC 404/600 temperature envelope. Reverse mode is particularly useful in line-replaceable units that expose a PCI bus to downstream modules.
Рекомендуется
FPGA-Based Embedded Platforms with Legacy PCI I/O
Xilinx and Altera SoC FPGAs typically lack a native 32-bit/66 MHz PCI host bus, so designers use the PI7C9X111SLBFDE to add PCI I/O to a PCIe-capable FPGA. The bridge exposes the full 32-bit PCI address/data bus, control signals, and arbitration lines to a standard PCI connector or to on-board PCI peripherals. Forward and reverse mode flexibility lets the FPGA act as either a PCI host or a PCI device, which is useful for prototyping and for dual-role embedded designs.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PI7C9X111SLBFDE — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | PI7C9X111SLBFE | PI7C9X111SLBFDEX | PI7C9X111SLAFDE | PI7C9X2G404SLBFDE | PI7C9X2G404SVAFDEEX |
|---|---|---|---|---|---|---|
| Brand | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated |
| Package | 128-LQFP (14x14 mm) | 128-LQFP (14x14 mm) - same | 128-LQFP (14x14 mm) - same | 128-LQFP (14x14 mm) - same | 128-LQFP (14x14 mm) - same | 128-LQFP (14x14 mm) - same |
| Function | PCIe x1 to 32-bit/66 MHz PCI reversible bridge | PCIe x1 to 32-bit/66 MHz PCI reversible bridge (tray) | PCIe x1 to 32-bit/66 MHz PCI reversible bridge (reel) | PCIe x1 to 32-bit/66 MHz PCI reversible bridge (A-grade) | PCIe Gen2 x4 packet switch (no PCI side) | PCIe Gen2 x4 packet switch, automotive |
| PCIe Generation | PCIe 1.1 (2.5 GT/s) | PCIe 1.1 (2.5 GT/s) | PCIe 1.1 (2.5 GT/s) | PCIe 1.1 (2.5 GT/s) | PCIe Gen2 (5.0 GT/s) | PCIe Gen2 (5.0 GT/s) |
| PCI Bus Support | 32-bit, 33/66 MHz | 32-bit, 33/66 MHz | 32-bit, 33/66 MHz | 32-bit, 33/66 MHz | None (PCIe switch only) | None (PCIe switch only) |
| Bridging Mode | Forward and Reverse | Forward and Reverse | Forward and Reverse | Forward and Reverse | PCIe fan-out (no bridge mode) | PCIe fan-out (no bridge mode) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | Extended automotive | -40C to +85C | Automotive extended |
| RoHS Compliance | Yes | Yes | Yes | Yes | Yes | Yes |
Ключевые отличия
- True forward and reverse bridging in a single chip (против PI7C9X2G404SLBFDE)
- SlimLine low-power architecture (против PI7C9X110BNBE)
- 66 MHz PCI bus support (против Earlier PI7C9X110-series bridges)
Заметки по проектированию
Route the 100 MHz PCIe REFCLK+ and REFCLK- pair as a 100 ohm differential trace with length matching within 5 mils. Keep the PETp0/PETn0 and PERp0/PERn0 pairs as close to the PCIe connector as possible, with reference planes on adjacent layers. Place decoupling capacitors (0.1 uF and 1 uF) on every VDD18, VDD33, VDDA18, and VDDA33 pin, with vias placed within 50 mils of each pin to keep power-rail impedance low at the 2.5 GHz fundamental.
The 32-bit/66 MHz PCI bus generates strong edge rates that couple into adjacent traces. Maintain 3W spacing on the PCI AD[31:0] and C/BE#[3:0] bus, and keep the bus traces on a single signal layer with a continuous ground reference plane. The 66 MHz mode requires source-termination matching at the bridge side; verify signal integrity with TDR measurements on the longest AD trace to ensure the rising edge meets the PCI 2.3 spec of 1.5 ns minimum setup time.
Do not leave the M66EN, REVRSB, and TM1 straps floating. According to the Diodes PI7C9X111SL datasheet section 3.2, the bridge samples REQ_L[3:2] and REVRSB at PERST# de-assertion to configure Clock Power Management and reverse mode. A floating M66EN pin defaults to 66 MHz operation, which some downstream PCI peripherals cannot handle and may appear as a hot-plug failure during enumeration.
The PI7C9X111SLBFDE requires two independent supply rails: 1.8 V for the core and PCIe PHY, and 3.3 V for the PCI I/O and sideband signals. Power-up sequencing must satisfy VDD18 reaching 90% of nominal before VDD33 ramps, or the bridge can latch-up and draw excessive current. Add a small power-on-reset supervisor on PWRGD to ensure PERST# is not released until both rails are stable. Estimated typical power consumption is 1.2 W at 66 MHz with active PCI traffic.
Информация о соответствии
RoHS and REACH compliance per Diodes product page. Not AEC-Q100 qualified - the A-grade PI7C9X111SLAFDE variant may be selected for automotive-adjacent applications. Halogen-free status not explicitly stated in the verified data; consult Diodes for confirmation.
