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Texas Instruments XIO2001IZWSR
- Part No.:
- XIO2001IZWSR
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 169-LFBGA
- Datasheet:
-
XIO2001IZWSR.pdf
- Description:
- IC ISOLATION
- Quantity:
- Payment:
- Shipping:
Inventory:750
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Product details
Overview
XIO2001IZWSR from Texas Instruments is a single-function PCI Express to PCI bus translation bridge compliant with PCI Express Base Specification 2.0 and PCI Local Bus Specification 2.3. It provides full ×1 PCIe throughput (250 MB/s bidirectional), supports 66-MHz/32-bit PCI bus operation, and integrates internal arbitration for up to six PCI bus masters - enabling legacy PCI add-in cards in modern PCIe-based enterprise servers and industrial controllers.
For engineers reviewing the XIO2001IZWSR datasheet, XIO2001IZWSR pinout, XIO2001IZWSR application, or XIO2001IZWSR equivalent, key selection criteria include PCIe-to-PCI latency behavior, dual-voltage (3.3 V / 5.0 V) PCI bus tolerance, ECRC-enabled error reporting, and support for L0s/L1 active-state power management - all critical for data center backplane upgrades and factory automation I/O expansion.
Technical Context
The XIO2001IZWSR implements a robust pipeline architecture to minimize transaction latency between its ×1 PCIe upstream port and downstream 32-bit PCI bus. It handles up to eight posted and four non-posted downstream transactions concurrently, and six posted and four non-posted upstream transactions - maintaining deterministic timing for real-time industrial control interfaces.
Its dual-clock domain design isolates the 100 MHz differential (or 125 MHz single-ended) PCIe reference clock from the configurable PCI clock outputs (25/33/50/66 MHz), while integrated AUX power switching ensures VAUX-only drain during main power-off - meeting enterprise system power sequencing requirements per PCI Express Power Budget Extensions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PCIe Interface | ×1 lane, PCIe Base Spec 2.0 compliant, 250 MB/s full-duplex throughput |
| PCI Bus Support | 32-bit, 66 MHz max (5.0 V only at 25/33 MHz), 3.3 V/5.0 V clamp rail tolerant |
| Error Reporting | PCIe Advanced Error Reporting with ECRC generation and forwarding |
| Power States | Supports D1, D2, D3hot, D3cold; L0s/L1 ASPM for link idle power savings |
| Clock Outputs | Six buffered PCI clocks: 25/33/50/66 MHz selectable via M66EN/PCLK66_SEL |
| Package | 169-ball ZWS nFBGA (12 mm × 12 mm), lead-free, PowerPad™ thermal enhancement |
| PCI Arbiter | Internal 2-level prioritization for six subordinate PCI masters; external arbiter option via EXT_ARB_EN |
Pinout & Package
Package: 169-ball ZWS nFBGA (12.00 mm × 12.00 mm), lead-free, with exposed thermal pad (PowerPad™). Compatible with standard nFBGA reflow profiles and IPC-7351B footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RXP / RXN | PCIe Differential Receive Input | HS DIFF IN pair for ×1 PCIe lane; requires 100 Ω differential termination to VSS |
| TXP / TXN | PCIe Differential Transmit Output | HS DIFF OUT pair; series AC-coupling capacitors required per PCIe spec |
| REFCLK+ / REFCLK− | Differential Reference Clock Input | Accepts 100 MHz common-reference clock; REFCLK125_SEL = 0 selects this mode |
| AD[31:0] | PCI Address/Data Multiplexed Bus | 32-bit time-multiplexed address/data lines; driven by secondary PCI bus agents |
| CLKOUT[0:6] | Configurable PCI Clock Outputs | Seven outputs; CLKOUT6 must drive CLK input when used; frequencies set by M66EN/PCLK66_SEL |
| GPIO0–GPIO4 | Multi-function I/O Terminals | Five 3.3-V LV CMOS pins; support GPIO, CLKRUN, PWR_OVRD, or I²C (SDA/SCL) modes |
Key Features
| Feature | Design Value |
|---|---|
| PCIe-to-PCI Translation | Full compliance with PCI Express to PCI/PCI-X Bridge Spec 1.0 - enables drop-in replacement of legacy PCI slots in PCIe chassis |
| Advanced Error Handling | ECRC generation + forwarding of PCIe data poisoning and PCI bus parity errors - reduces uncorrectable system crashes in mission-critical servers |
| Flexible Clocking | Support for 100 MHz differential or 125 MHz single-ended PCIe reference clock; optional spread spectrum - simplifies board-level clock tree design |
| Power Management | L0s/L1 ASPM, D3cold wake via WAKE#, PME# detection, and integrated AUX power switch - meets enterprise platform S0ix/S5 power budgets |
| Arbitration Flexibility | Configurable internal arbiter (6 masters, 2-level priority) or external arbiter mode via EXT_ARB_EN - adapts to custom backplane topologies |
Applications
| Enterprise Server Expansion | Industrial I/O Controller |
|---|---|
|
Use Scenario: Adding legacy PCI-based RAID or FPGA co-processor cards into a PCIe-based rack server motherboard. IC Role / Device Role / Timing Role: Translation bridge providing protocol, timing, and voltage translation between PCIe root complex and PCI peripheral bus. Use Value: Enables reuse of certified PCI add-in cards without redesigning firmware or drivers - reducing time-to-market for OEM server platforms. |
Use Scenario: Integrating multiple 3.3 V/5.0 V PCI I/O modules (digital I/O, motion control, fieldbus) into an industrial PLC backplane. IC Role / Device Role / Timing Role: PCI bus master interface with configurable clock outputs and robust arbitration for deterministic real-time response. Use Value: Supports mixed-voltage PCI peripherals on a single bus while maintaining 66 MHz timing margins - critical for synchronized motion control loops. |
| Retail Point-of-Sale Terminal | Factory Automation Gateway |
|
Use Scenario: Connecting PCI-based payment card readers, receipt printers, and biometric scanners to a compact PCIe-based embedded controller. IC Role / Device Role / Timing Role: Low-latency bridge with D3cold wake and PME# support for fast peripheral enumeration and power-gated standby. Use Value: Achieves sub-second resume from deep sleep - meeting PCI-SIG power management requirements for energy-efficient retail kiosks. |
Use Scenario: Bridging legacy PCI-based vision processing or safety I/O modules to a modern PCIe-based edge AI gateway in automotive assembly lines. IC Role / Device Role / Timing Role: High-integrity translation with ECRC and parity error forwarding to prevent undetected data corruption in safety-critical networks. Use Value: Provides hardware-level error containment between PCI peripherals and PCIe host - satisfying IEC 61508 functional safety prerequisites. |
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 |
|---|---|---|---|
| PLX Technology PEX8112-AB50BC | ×1 PCIe to PCI-X bridge; supports 133 MHz PCI-X; no native 5.0 V PCI tolerance | Better suited for high-bandwidth storage controllers requiring PCI-X 133 MHz; not compatible with 5.0 V legacy PCI cards | Select when upgrading to PCI-X peripherals; avoid if interfacing with 5.0 V PCI devices |
| Pericom PI7C9X2G608GP | ×2 PCIe to dual PCI bridge; integrated 3.3 V LDOs; smaller 128-pin TQFP package | Optimized for space-constrained embedded designs with dual independent PCI buses; lacks VAUX power switching | Prefer for compact industrial gateways needing two isolated PCI segments; verify VAUX sequencing separately |
Compared with PEX8112-AB50BC and PI7C9X2G608GP, the XIO2001IZWSR uniquely combines 5.0 V PCI bus tolerance, VAUX-aware power switching, and ECRC-capable error reporting - making it the only choice for enterprise server retrofits requiring full backward compatibility and safety-critical error visibility.
Availability
XIO2001IZWSR is available at Aetrix Electronics and suitable for enterprise server expansion, industrial I/O controller design, and retail point-of-sale terminal development requiring stable component supply across long production lifecycles.
Supply support for XIO2001IZWSR 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 enterprise markets with high-reliability silicon solutions.
The XIO2001IZWSR belongs to TI's PCI Express interconnect product line, engineered specifically to extend the service life of legacy PCI infrastructure within next-generation PCIe-based systems - targeting data center consolidation and industrial equipment modernization.
FAQ
What PCIe specification revision does the XIO2001IZWSR implement?
The XIO2001IZWSR implements PCI Express Base Specification Revision 2.0 and PCI Express to PCI/PCI-X Bridge Specification Revision 1.0. It supports ×1 lane operation at 2.5 GT/s with full 250 MB/s bidirectional throughput, ECRC, and Advanced Error Reporting - verified in TI's SCPS212J datasheet Section 3 and Table 6-1.
Does the XIO2001IZWSR support 5.0 V PCI bus signaling?
Yes, the XIO2001IZWSR supports 5.0 V PCI bus signaling on its AD[31:0], C/BE[3:0], and other PCI bus terminals when configured for 25 MHz or 33 MHz operation. The PCIR pins connect to the 5.0 V clamp rail via 1 kΩ resistors, enabling safe interfacing with legacy 5.0 V PCI cards - as specified in Pin Functions table, page 8 of the SCPS212J datasheet.
How many PCI bus masters can the XIO2001IZWSR arbitrate internally?
The XIO2001IZWSR includes an internal PCI arbiter supporting up to six external PCI bus masters with configurable 2-level prioritization. When EXT_ARB_EN is low, the internal arbiter manages GNT[5:0] and REQ[5:0]; when EXT_ARB_EN is high, it yields arbitration to an external controller - detailed in Section 1, Features and Pin Functions table (page 11).
What reference clock options does the XIO2001IZWSR accept for PCIe operation?
The XIO2001IZWSR accepts either a 100 MHz differential common reference clock (via REFCLK+/REFCLK−) or a 125 MHz single-ended reference clock (via REFCLK+ only), selected by the REFCLK125_SEL pin. Optional spread spectrum clocking is supported - per Section 6.8 and Pin Functions table (page 9) of the SCPS212J datasheet.
Is the XIO2001IZWSR pin-compatible with other packages of the XIO2001 family?
No, the XIO2001IZWSR (169-ball ZWS nFBGA) is not pin-compatible with the ZAJ nFBGA (144-ball) or PNP HTQFP (128-pin) variants. Ball/pin assignments differ significantly across packages - e.g., REFCLK+ is at C13 in ZWS but C13 in ZAJ and 93 in PNP; GPIO0 is at N09 in ZWS but N09 in ZAJ and 55 in PNP - confirmed in Figures 5-1, 5-2, and 5-3.
XIO2001IZWSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 169-LFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- PCI Express to PCI Translation Bridge
- Interface:
- PCI Express
- Voltage - Supply:
- 1.35V ~ 1.65V, 3V ~ 3.6V
- Supplier Device Package:
- 169-NFBGA (12x12)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
XIO2001IZWSR FAQ
1.How can I place an order for XIO2001IZWSR through Aetrix?
Please submit a Request for Quotation (RFQ) for XIO2001IZWSR 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 XIO2001IZWSR reliable?
The price and inventory of XIO2001IZWSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for XIO2001IZWSR is usually 5 days.
3.What payment methods are accepted for XIO2001IZWSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for XIO2001IZWSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for XIO2001IZWSR?
XIO2001IZWSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your XIO2001IZWSR 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 XIO2001IZWSR?
For technical support, including XIO2001IZWSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your XIO2001IZWSR requirements.
6.How does Aetrix verify that XIO2001IZWSR is sourced from the original manufacturer or authorized distributors?
All XIO2001IZWSR 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 XIO2001IZWSR meets industry standards.
7.What is the process for return or replacement of XIO2001IZWSR?
All XIO2001IZWSR units undergo pre-shipment inspection (PSI). If there is an issue with XIO2001IZWSR, 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 XIO2001IZWSR part is unused and in its original packaging.
Return procedure for XIO2001IZWSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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