The XIO2221ZAY is a versatile and high-performance PCI Express-to-PCI bridge chip designed by Texas Instruments to facilitate the connection of legacy PCI devices to the newer, faster PCI Express bus interface. This product is ideal for applications that require a bridge between the two interfaces, ensuring compatibility and extending the lifecycle of PCI-based devices.

Key Features

• PCI Express Interface: The XIO2221ZAY supports a single-lane (x1) PCI Express operation, which is compatible with the PCI Express 1.1 specification. This provides a high-speed connection to the system CPU and memory.
• PCI Bus Interface: On the legacy side, it offers a 32-bit, 33MHz PCI interface, ensuring connectivity with a wide range of existing PCI hardware.
• High Throughput: With its efficient bridging capabilities, the XIO2221ZAY ensures high data throughput between the PCI Express and PCI buses.
• Advanced Features: This product incorporates many advanced features such as support for spread spectrum clocking to minimize electromagnetic interference (EMI), and a low-power state to conserve energy when not in active use.
• Flexibility: The device is highly flexible and can be used in various applications, including industrial control, test equipment, and legacy device integration.

Applications

The XIO2221ZAY is suitable for a broad range of applications, particularly where there is a need to bridge modern systems with legacy PCI peripherals. This includes sectors such as industrial automation, data acquisition, embedded systems, and network infrastructure.

Technical Specifications

• PCI Express Base Specification 1.1 compliant
• Supports x1 link operations
• 32-bit, 33MHz PCI interface support
• Spread spectrum clocking for reduced EMI
• Low-power state supported
• Package Type: 160-pin Microstar BGA

The Texas Instruments XIO2221ZAY is an essential component for bridging new and legacy hardware, ensuring that investments in PCI devices continue to deliver value in the modern computing landscape.