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Microchip Technology PCI12000-I/ZUX
- Part No.:
- PCI12000-I/ZUX
- Manufacturer:
- Microchip Technology
- Category:
- Specialized
- Package:
- 72-VFQFN Exposed Pad
- Datasheet:
-
PCI12000-I/ZUX.pdf
- Description:
- PCIE SWITCH 2 DOWNSTREAM PORTS
- Quantity:
- Payment:
- Shipping:
Inventory:150
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Product details
Overview
PCI12000-I/ZUX from Microchip Technology is a 3-port PCIe Gen 4 (8 GT/s) switch with integrated programmable I/O multiplexer (SMBus/SPI/UART/GPIO), featuring a 2-lane upstream port and two 1-lane downstream ports, 512-byte maximum payload size, and industrial-grade operation from −40°C to +85°C in a 72-pin VQFN package - deployed in embedded industrial PCs requiring PCIe 4.0 expansion with consolidated I/O control.
For engineers reviewing the PCI12000-I/ZUX datasheet, PCI12000-I/ZUX pinout, PCI12000-I/ZUX application, or PCI12000-I/ZUX equivalent, this page delivers verified technical context on PCIe Gen 4 switching architecture, integrated clocking (25 MHz crystal support), power management (LPSS L2 with aux supply), UART RS232/RS485 auto-direction control, and configurable pin multiplexing for system-level I/O consolidation.
Technical Context
The PCI12000-I/ZUX implements a compliant PCIe 4.x switch fabric with full Gen 4 (8 GT/s) line rate certification, supporting 2×8 GT/s upstream and dual 1×8 GT/s downstream lanes. Its integrated PCIe PHYs include lane reversal, polarity inversion, and receiver equalization tuning per port.
It integrates a programmable I/O multiplexer enabling dynamic assignment of SMBus, SPI, UART, and GPIO functions to physical pins - all managed via PCIe endpoint configuration space. Clock generation is centralized in an internal clock farm requiring only one external 25 MHz single-ended reference and one PCIe reference clock.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PCIe Generation | Gen 4 (8 GT/s), certified per PCIe Revision 4.x compliance program - enables full bandwidth for high-throughput peripheral expansion. |
| Port Configuration | 1×2-lane upstream + 2×1-lane downstream - supports flexible topology for daisy-chained or fan-out PCIe subsystems. |
| Maximum Payload Size | 512 bytes - improves bus efficiency for large data transfers in industrial control and vision systems. |
| Power Supplies | +3.3V, +2.5V, +1.1V - discrete rail requirements enable optimized power delivery and thermal management. |
| Temperature Range | −40°C to +85°C (Industrial grade) - qualified for extended operation in factory automation and ruggedized IPC environments. |
| Clock Input | Single 25 MHz crystal or oscillator - reduces BOM cost and board space versus multi-clock solutions. |
| ESD Rating | JEDEC Class 3A - ensures robustness against handling and system-level ESD events in manufacturing and field deployment. |
Pinout & Package
Package: 72-pin Very Thin Quad Flat No-lead (VQFN), RoHS-compliant, 10 mm × 10 mm × 0.9 mm body, 0.5 mm pitch, exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REFCLK_P / REFCLK_N | PCIe Reference Clock Input | Differential input for PCIe PHY timing synchronization - required for Gen 4 link training and stability. |
| CLK_IN | 25 MHz Clock Input | Single-ended input driving internal clock farm - eliminates need for external PLL or multiple oscillators. |
| PERST# | PCIe Reset Input | Active-low asynchronous reset controlling PCIe link initialization and recovery sequences. |
| SMBCLK / SMBDAT | SMBus Target Interface | Two-wire interface for host-side configuration and status monitoring without PCIe enumeration overhead. |
| UART_TX / UART_RX / UART_RTS# / UART_CTS# | RS232/RS485 UART Interface | Full-duplex serial I/O with auto-direction control - supports legacy industrial protocols and debug console access. |
| GPIO[7:0] | Configurable General-Purpose I/O | Eight multifunction pins assignable via register programming - usable as interrupts, status indicators, or control signals. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PCIe Switch Fabric | Single-chip 3-port Gen 4 switch eliminating external bridge ICs and reducing latency in embedded PCIe expansion paths. |
| Programmable Pin Multiplexer | Runtime-configurable mapping of SMBus, SPI, UART, and GPIO to physical pins - maximizes flexibility across board revisions and applications. |
| LPSS L2 Substate Support | Low-power standby with auxiliary supply retention - enables rapid wake-up while maintaining PCIe link state in energy-constrained systems. |
| Internal Power-On Reset | Configurable under/over-voltage detection on all three supplies - ensures deterministic initialization without external supervisor ICs. |
| PVT Sensor Integration | On-die process-voltage-temperature monitor - supports dynamic voltage/frequency scaling and thermal throttling in real time. |
Applications
| Industrial PC Expansion | Edge AI Inference Node |
|---|---|
Use Scenario: Adding PCIe Gen 4 peripherals (NVMe SSDs, FPGAs, vision accelerators) to space-constrained industrial motherboards. IC Role / Device Role / Timing Role: PCIe switch providing upstream connectivity to CPU and downstream routing to add-in cards. Use Value: Enables 8 GT/s throughput with integrated I/O consolidation - reduces component count and PCB layer count vs. discrete switch + I/O expander solutions. |
Use Scenario: Connecting low-latency AI accelerators and sensor fusion modules in edge gateways operating in harsh environments. IC Role / Device Role / Timing Role: PCIe Gen 4 switch with embedded UART and SMBus for accelerator configuration and telemetry. Use Value: Eliminates separate level-shifters and protocol translators - simplifies design of AEC-Q100 Grade 3–qualified edge nodes. |
| Ruggedized Data Acquisition System | Modular Test Equipment Chassis |
Use Scenario: High-channel-count DAQ systems requiring synchronized PCIe-triggered sampling across multiple ADC modules. IC Role / Device Role / Timing Role: PCIe switch with precise clock distribution and PVT-sensor-assisted thermal management. Use Value: Maintains Gen 4 link integrity under thermal stress - avoids retraining failures during sustained acquisition runs. |
Use Scenario: Reconfigurable test instrumentation where PCIe peripherals (digitizers, signal generators) are hot-swapped in modular slots. IC Role / Device Role / Timing Role: PCIe switch with robust PERST# handling and LPSS L2 for fast module insertion/removal cycles. Use Value: Supports seamless hot-plug detection and link recovery - critical for automated calibration and production test throughput. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PCIe switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCI12000-V/ZUXVAO | Same silicon, automotive Grade 2 (−40°C to +105°C); identical pinout and electrical specs. | Targeted for under-hood automotive ECUs requiring extended temperature operation. | Select when ambient operating temperature exceeds +85°C or AEC-Q100 Grade 2 qualification is mandatory. |
| PCI12000-I/ZUXVAO | Same silicon, automotive Grade 3 (−40°C to +85°C); identical pinout, electrical specs, and industrial temp range but with AEC-Q100 Grade 3 validation. | Required for automotive infotainment and ADAS domains needing automotive qualification at industrial temperature range. | Select when automotive qualification (AEC-Q100 Grade 3) is required but extended temperature is not needed. |
Compared with PCI12000-I/ZUX, the V/ZUXVAO variant adds +105°C capability for engine bay use, while the I/ZUXVAO variant provides AEC-Q100 Grade 3 certification without temperature extension - both retain identical PCIe Gen 4 performance, I/O multiplexing, and pin compatibility.
Availability
PCI12000-I/ZUX is available at Aetrix Electronics and suitable for industrial PCs, edge AI inference nodes, ruggedized data acquisition systems, and modular test equipment requiring stable component supply with long-term lifecycle assurance.
Supply support for PCI12000-I/ZUX includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology Inc. is a leading provider of microcontrollers, analog devices, FPGAs, and connectivity solutions, serving industrial, automotive, and communications markets with differentiated silicon and development tools.
The PCI12000 product line delivers integrated PCIe Gen 4 switching with consolidated programmable I/O - designed specifically for embedded systems where space, power, and qualification rigor constrain traditional multi-chip solutions.
FAQ
What is the PCIe generation and compliance status of the PCI12000-I/ZUX?
The PCI12000-I/ZUX is a PCIe Gen 4 (8 GT/s) switch certified against the PCIe Revision 4.x compliance program. It supports full Gen 4 line rates on its 2-lane upstream and two 1-lane downstream ports. Compliance testing covers physical layer signaling, link training, and protocol layer behavior per PCI-SIG specifications - confirmed in DS00003794C. The PCI12000-I/ZUX does not support Gen 5 or backward-only Gen 3 modes.
Does the PCI12000-I/ZUX require multiple external clocks?
No. The PCI12000-I/ZUX requires only one external 25 MHz single-ended clock or crystal plus one differential PCIe reference clock (REFCLK_P/N). All internal clocks-including PCIe PHY clocks and I/O domain clocks-are generated by an integrated clock farm. This eliminates external PLLs or multiple oscillators, reducing BOM cost and layout complexity for the PCI12000-I/ZUX.
What I/O interfaces are supported by the PCI12000-I/ZUX and how are they configured?
The PCI12000-I/ZUX supports SMBus (target and controller), SPI peripheral, UART (RS232/RS485 with auto-direction control), and eight multifunction GPIOs. These are assigned to physical pins via a programmable pin multiplexer controlled through PCIe configuration space registers - allowing runtime reconfiguration without hardware changes to the PCI12000-I/ZUX implementation.
Is the PCI12000-I/ZUX qualified for automotive applications?
The PCI12000-I/ZUX itself is rated for industrial temperature (−40°C to +85°C) and is not AEC-Q100 qualified. However, Microchip offers functionally identical variants: PCI12000-I/ZUXVAO (AEC-Q100 Grade 3) and PCI12000-V/ZUXVAO (AEC-Q100 Grade 2, −40°C to +105°C). These share the same die and pinout as the PCI12000-I/ZUX but include automotive qualification testing and documentation.
What power management features does the PCI12000-I/ZUX support?
The PCI12000-I/ZUX supports PCIe 3.1 Low Power Sub States (LPSS), including L2 with auxiliary power supply retention. It also integrates a configurable power-on reset circuit with under/over-voltage protection on all three rails (+3.3V, +2.5V, +1.1V). Latch-up immunity exceeds 150 mA per JESD78 Class II, and JEDEC Class 3A ESD protection is built-in - all verified for the PCI12000-I/ZUX in DS00003794C.
PCI12000-I/ZUX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 72-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- -
- Interface:
- -
- Voltage - Supply:
- -
- Supplier Device Package:
- 72-VQFN (10x10)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
PCI12000-I/ZUX FAQ
1.How can I place an order for PCI12000-I/ZUX through Aetrix?
Please submit a Request for Quotation (RFQ) for PCI12000-I/ZUX on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PCI12000-I/ZUX reliable?
The price and inventory of PCI12000-I/ZUX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCI12000-I/ZUX is usually 5 days.
3.What payment methods are accepted for PCI12000-I/ZUX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCI12000-I/ZUX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCI12000-I/ZUX?
PCI12000-I/ZUX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCI12000-I/ZUX order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PCI12000-I/ZUX?
For technical support, including PCI12000-I/ZUX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCI12000-I/ZUX requirements.
6.How does Aetrix verify that PCI12000-I/ZUX is sourced from the original manufacturer or authorized distributors?
All PCI12000-I/ZUX products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PCI12000-I/ZUX meets industry standards.
7.What is the process for return or replacement of PCI12000-I/ZUX?
All PCI12000-I/ZUX units undergo pre-shipment inspection (PSI). If there is an issue with PCI12000-I/ZUX, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PCI12000-I/ZUX part is unused and in its original packaging.
Return procedure for PCI12000-I/ZUX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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