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Texas Instruments XIO2001IZGU
- Part No.:
- XIO2001IZGU
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 169-LFBGA
- Datasheet:
-
XIO2001IZGU.pdf
- Description:
- IC INTERFACE SPECIALIZED 169BGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,379
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Product details
Overview
XIO2001IZGU from Texas Instruments is a single-function PCI Express to PCI bus translation bridge compliant with PCI Express Base 2.0, PCI Express to PCI/PCI-X Bridge 1.0, and PCI Local Bus 2.3 specifications. It implements a ×1 PCIe link (250 MB/s full-duplex), supports 32-bit/33–66 MHz PCI bus operation with 6 subordinate masters, and integrates advanced error reporting including ECRC. It enables legacy PCI add-in cards in modern PCIe-based enterprise servers and industrial control systems.
For engineers reviewing the XIO2001IZGU datasheet, XIO2001IZGU pinout, XIO2001IZGU application, or XIO2001IZGU equivalent, key selection criteria include PCIe-to-PCI latency behavior, dual-voltage (3.3 V/5.0 V) PCI bus tolerance, internal arbiter configuration, AUX power switching, and support for L0s/L1 ASPM power states - all confirmed for the ZWS nFBGA package.
Technical Context
The XIO2001IZGU implements a robust pipeline architecture that minimizes transaction latency between its ×1 PCIe interface (250 MB/s per direction) and its 32-bit PCI bus (up to 66 MHz). It handles up to eight posted and four non-posted downstream transactions simultaneously, and six posted and four non-posted upstream transactions.
It supports full PCI Express Advanced Error Reporting (AER), including ECRC generation/verification, data poisoning, and forwarding of PCI bus parity errors. Its power management includes D1/D2/D3hot/D3cold states, active-state link power management (L0s/L1), wake event signaling, and CLKREQ-driven clock restoration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PCIe Interface | ×1 lane, PCIe Base 2.0 compliant, 250 MB/s full-duplex throughput |
| PCI Bus Interface | 32-bit, 33/66 MHz operation, 3.3-V and 5.0-V tolerant (5 V only at 25/33 MHz) |
| Transaction Capacity | 8 posted + 4 non-posted downstream; 6 posted + 4 non-posted upstream |
| Error Handling | PCIe AER with ECRC support, data poisoning, PCI bus parity error forwarding |
| Power Management | D1/D2/D3hot/D3cold states; L0s/L1 ASPM; CLKREQ, WAKE, PME, PWR_OVRD signals |
| Clock Options | 100-MHz differential REFCLK or 125-MHz single-ended REFCLK; spread spectrum supported |
| Package | 169-ball ZWS nFBGA (7.0 mm × 7.0 mm), lead-free, RoHS-compliant |
Pinout & Package
The XIO2001IZGU is packaged in a 169-ball ZWS nFBGA (7.0 mm × 7.0 mm) with 0.5-mm pitch, optimized for thermal performance and board space efficiency in high-density server and industrial PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RXP / RXN | PCIe Differential Receive Pair | HS DIFF IN inputs for ×1 PCIe lane; require controlled 100-Ω differential impedance routing |
| TXP / TXN | PCIe Differential Transmit Pair | HS DIFF OUT outputs for ×1 PCIe lane; require series AC-coupling capacitors per spec |
| REFCLK+ / REFCLK− | Differential Reference Clock Input | Accepts 100-MHz common-reference clock; REFCLK− must be AC-coupled to VSS for single-ended mode |
| PERST | PCIe Reset Input | LV CMOS input with hysteresis; asserts internal power-on reset when system power stabilizes |
| CLKREQ | PCIe Clock Request Output | Open-drain LV CMOS output; requires external pullup; signals upstream device to restore REFCLK during L1 exit |
| WAKE | PCIe Wake Signal Output | Open-drain LV CMOS output; drives low to reactivate main power rails and clocks in D3cold exit |
| AD[31:0] | PCI Address/Data Multiplexed Bus | 32-bit bidirectional PCI bus I/O; clamp-rail tolerant (3.3 V or 5 V) via PCIR pins |
| CLKOUT[0:6] | PCI Clock Outputs | Six buffered outputs (25/33/50/66 MHz); CLKOUT6 must connect to CLK input if used |
Key Features
| Feature | Design Value |
|---|---|
| PCIe-to-PCI Translation | Full compliance with PCIe Base 2.0 and PCIe-to-PCI Bridge 1.0 specs ensures interoperability with standard root complexes and PCI devices |
| Internal Arbiter | Configurable 2-level prioritization for up to 6 external PCI masters eliminates need for external arbitration logic |
| AUX Power Switching | Integrated VAUX switch drains only when main power is off, enabling true D3cold power gating without auxiliary leakage |
| EEPROM Serial-Bus Controller | Memory-mapped I²C-compatible interface supports PCI Express power budget extensions for add-in card power management |
| Robust Pipeline Architecture | Minimizes latency across PCIe ↔ PCI boundary, critical for real-time industrial I/O and storage bridging applications |
Applications
| Data Center Server Expansion | Industrial Control Backplane |
|---|---|
Use Scenario: Adding legacy PCI-based RAID controllers or FPGA co-processors into modern PCIe-based rack servers. IC Role / Device Role / Timing Role: Translation bridge enabling PCIe host communication with PCI peripherals while maintaining full bandwidth and error reporting integrity. Use Value: Eliminates custom adapter redesign; preserves investment in certified PCI hardware while upgrading host infrastructure to PCIe Gen2. |
Use Scenario: Integrating PCI-based motion control modules into programmable logic controller (PLC) backplanes with PCIe-capable CPU modules. IC Role / Device Role / Timing Role: Real-time bridge with deterministic latency and D3cold-aware power sequencing for factory automation safety-critical paths. Use Value: Enables seamless hot-swap and firmware update cycles without interrupting PLC runtime, leveraging CLKREQ/WAKE for graceful power state transitions. |
| Embedded Retail Payment Terminal | Medical Imaging Data Acquisition |
Use Scenario: Connecting PCI-based EMV smart-card readers and PIN pads to embedded x86 platforms using PCIe chipsets. IC Role / Device Role / Timing Role: Secure bridge supporting PCI bus LOCK and parity error detection for tamper-evident payment transactions. Use Value: Meets PCI PTS v6.0 requirements for secure peripheral attachment via validated error-forwarding and isolation of PCI bus faults. |
Use Scenario: Bridging legacy PCI-based analog-to-digital acquisition cards (e.g., high-speed CT/X-ray digitizers) to PCIe-based medical imaging workstations. IC Role / Device Role / Timing Role: Low-latency, jitter-controlled bridge with 66-MHz PCI timing and ECRC-protected data transfers for lossless image streaming. Use Value: Guarantees bit-accurate transfer of multi-gigabyte DICOM datasets without packet corruption or retry-induced latency spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PCI Express to PCI bridge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PEX8112-AA50BCF | PCIe 1.0a ×1 to PCI-X 133 MHz bridge; supports 64-bit/133 MHz PCI-X; no native 5 V PCI tolerance | Better suited for high-bandwidth PCI-X peripherals (e.g., GigE NICs), not legacy 32-bit PCI cards | Select when migrating to PCI-X infrastructure; avoid for 5 V-only PCI devices or strict PCI 2.3 compliance needs |
| PI7C9X2G304SV | PCIe 2.0 ×2 to PCI Express 1.1 switch with integrated bridge function; supports multiple downstream ports | Designed for PCIe fanout and multi-device expansion, not direct PCI bus replacement | Choose for scalable PCIe endpoint aggregation; not a drop-in replacement for single-bridge legacy PCI slot extension |
Compared with PEX8112-AA50BCF and PI7C9X2G304SV, the XIO2001IZGU uniquely delivers native 3.3 V/5.0 V PCI bus compatibility, full PCI 2.3 compliance, and integrated AUX power switching - making it the only option qualified for retrofitting legacy PCI add-in cards into PCIe Gen2 enterprise and industrial platforms without voltage translation or layout redesign.
Availability
XIO2001IZGU is available at Aetrix Electronics and suitable for data center server expansion, industrial control backplanes, and embedded retail payment terminals requiring stable component supply and long-term lifecycle support.
Supply support for XIO2001IZGU 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
Texas Instruments is a global semiconductor leader focused on analog, embedded processing, and connectivity technologies, serving industrial, automotive, and communications markets with high-reliability silicon solutions.
The XIO2001IZGU belongs to TI's PCI Express bridge product line, engineered specifically to extend the life of legacy PCI peripherals in next-generation PCIe infrastructure - targeting enterprise computing, factory automation, and mission-critical embedded systems.
FAQ
What PCIe and PCI specifications does the XIO2001IZGU comply with?
The XIO2001IZGU complies with PCI Express Base Specification Revision 2.0, PCI Express to PCI/PCI-X Bridge Specification Revision 1.0, and PCI Local Bus Specification Revision 2.3. These certifications ensure interoperability with standard PCIe root complexes and PCI peripherals. The XIO2001IZGU also supports extended features like ECRC and AER as defined in the PCIe 2.0 specification. All compliance statements apply directly to the XIO2001IZGU in its ZWS nFBGA package.
Does the XIO2001IZGU support both 3.3-V and 5.0-V PCI bus signaling?
Yes, the XIO2001IZGU supports both 3.3-V and 5.0-V PCI bus I/O signaling through dedicated PCIR clamp rail pins. However, 5.0-V operation is restricted to 25 MHz and 33 MHz PCI clock frequencies - 66 MHz mode requires 3.3-V signaling only. This dual-voltage capability allows the XIO2001IZGU to interface with legacy 5 V PCI cards while maintaining compatibility with modern 3.3 V designs.
What power management states are supported by the XIO2001IZGU?
The XIO2001IZGU supports D1, D2, D3hot, and D3cold device power states, along with Active-State Power Management (ASPM) using L0s and L1 link states. It provides dedicated signals - CLKREQ, WAKE, PME, and PWR_OVRD - to coordinate state transitions with upstream PCIe controllers and downstream PCI devices. The XIO2001IZGU's integrated AUX power switch enables true D3cold current isolation, a requirement for energy-efficient industrial and medical systems.
How many PCI bus masters can the XIO2001IZGU arbitrate internally?
The XIO2001IZGU includes an internal PCI arbiter supporting up to six external PCI bus masters, with configurable 2-level prioritization. It also supports up to six subordinate PCI bus masters on the secondary side. When an external arbiter is used, the XIO2001IZGU can operate in pass-through mode using EXT_ARB_EN. This flexibility makes the XIO2001IZGU suitable for both simple single-master add-in cards and complex multi-peripheral backplane architectures.
What reference clock options does the XIO2001IZGU accept?
The XIO2001IZGU accepts either a 100-MHz differential common reference clock (via REFCLK+/REFCLK−) or a 125-MHz single-ended reference clock (via REFCLK+ only, with REFCLK− AC-coupled to VSS). The REFCLK125_SEL pin selects between modes. Spread spectrum clocking is supported in both configurations. These options provide design flexibility for timing source selection in server, industrial, and embedded platforms where clock tree topology varies.
XIO2001IZGU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 169-LFBGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Applications:
- PCI Express to PCI Translation Bridge
- Interface:
- PCI Express
- Voltage - Supply:
- 1.35V ~ 1.65V, 3V ~ 3.6V
- Supplier Device Package:
- 169-BGA MicroStar (12x12)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
XIO2001IZGU FAQ
1.How can I place an order for XIO2001IZGU through Aetrix?
Please submit a Request for Quotation (RFQ) for XIO2001IZGU 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 XIO2001IZGU reliable?
The price and inventory of XIO2001IZGU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XIO2001IZGU is usually 5 days.
3.What payment methods are accepted for XIO2001IZGU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XIO2001IZGU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for XIO2001IZGU?
XIO2001IZGU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your XIO2001IZGU 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 XIO2001IZGU?
For technical support, including XIO2001IZGU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XIO2001IZGU requirements.
6.How does Aetrix verify that XIO2001IZGU is sourced from the original manufacturer or authorized distributors?
All XIO2001IZGU 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 XIO2001IZGU meets industry standards.
7.What is the process for return or replacement of XIO2001IZGU?
All XIO2001IZGU units undergo pre-shipment inspection (PSI). If there is an issue with XIO2001IZGU, 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 XIO2001IZGU part is unused and in its original packaging.
Return procedure for XIO2001IZGU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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