XIO2001IZWSR

Specialized Overview

The XIO2001IZWSR is a single-function PCI Express to PCI translation bridge compliant with PCI Express Base Specification Revision 2.0 and PCI Express to PCI/PCI-X Bridge Specification Revision 1.0. It supports a ×1 link operating at full 250 MB/s packet throughput in each direction simultaneously. The device accommodates up to eight posted and four non-posted downstream transactions, and six posted and four non-posted upstream transactions. It operates within a temperature range of -40°C to +85°C and utilizes a 169-ball ZWS nFBGA package measuring 12.00 mm x 12.00 mm.

Specialized Feature Summary

• Supports advanced error reporting including extended CRC (ECRC) as defined in the PCI Express Base Specification.
• Features an internal configurable, two-level prioritization scheme supporting up to six subordinate PCI bus masters.
• Includes integrated AUX power switch functionality that drains VAUX power only when main power is off.
• Provides six buffered PCI clock outputs selectable for 25 MHz, 33 MHz, 50 MHz, or 66 MHz frequencies.

Specialized Applications

• Enterprise systems such as data center and enterprise computing infrastructure
• Personal electronics including PC and notebook computers
• Industrial applications involving factory automation and control systems

Specialized Procurement Notes

Verify the specific ordering suffix 'IZWSR' against the manufacturer's current orderable addendum to confirm package type, temperature grade, and tape-and-reel configuration. Ensure compatibility with system power sequencing requirements, particularly regarding PERST# and reference clock stability during initialization.

Specialized Selection Notes

Select this component for designs requiring a compact footprint with a 12mm x 12mm nFBGA package. It is suitable for applications needing support for multiple subordinate PCI masters via internal arbitration. Consider the available 3.3-V and 5.0-V tolerance options for the PCI bus interface when designing for legacy peripheral integration.

Specialized Part Context

This part belongs to the XIO2001 family of PCI Express to PCI translation bridges manufactured by Texas Instruments. The ZWS suffix denotes the 169-ball nFBGA package variant. Other variants in the family include the ZAJ nFBGA and PNP HTQFP packages, offering different form factors for diverse board layout constraints.

Specialized Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult the manufacturer's product selection guide for alternative interface solutions if pin-to-pin compatibility is required.