Texas Instruments XIO2213BIZAY

Overview

XIO2213BIZAY from Texas Instruments is a PCI Express-to-IEEE 1394b OHCI bridge IC with integrated 3-port PHY, supporting PCIe Gen1 x1 link (2.5 Gbps), OHCI 1.1 compliance, and 1394b S400/S800 operation. It enables legacy FireWire connectivity in modern PCIe-based host systems such as industrial imaging controllers and broadcast video capture platforms.

For engineers reviewing the XIO2213BIZAY datasheet, XIO2213BIZAY pinout, XIO2213BIZAY application, or XIO2213BIZAY equivalent, key selection criteria include PCIe-to-1394b protocol translation fidelity, integrated PHY power class support (Class A/B/C), GPIO configurability, MSI interrupt capability, and TI's proprietary register-mapped OHCI extension for DV timestamping.

Technical Context

The XIO2213BIZAY implements a full PCIe endpoint with configurable link training, Advanced Error Reporting (AER), and MSI message generation for PCIe interrupt forwarding. Its OHCI controller supports IEEE 1394b-2002 with isochronous transmit/receive context management and physical-layer bus reset handling.

It integrates a 3-port 1394b PHY with programmable power class, crystal oscillator interface (24.576 MHz), and PHY control registers accessible via TI's proprietary memory-mapped space. The device uses dual configuration spaces - standard PCIe extended config and separate OHCI PCI config - to decouple host interface and 1394 subsystem initialization.

Key Specifications

Pinout & Package

Package: 176-pin TQFP (24 mm × 24 mm, 0.5 mm pitch), RoHS-compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PCIe-to-1394b bridge applications.

Compared with TUSB8041 and XIO2213AZAY, the XIO2213BIZAY uniquely delivers PCIe Gen1-to-1394b OHCI bridging with industrial-grade thermal rating, DV timestamp extensions, and three configurable PHY ports - making it the sole option for FireWire-dependent real-time imaging systems operating beyond 85°C ambient.

Availability

XIO2213BIZAY is available at Aetrix Electronics and suitable for industrial machine vision systems, broadcast video capture cards, medical imaging workstations, and automated test equipment requiring stable component supply and long-term lifecycle support.

Supply support for XIO2213BIZAY 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets since 1930.

The XIO2213BIZAY belongs to TI's Interface Bridge portfolio, designed specifically to extend legacy high-speed serial interfaces (1394b, USB, SATA) into modern PCIe-based host architectures without driver or OS modification.

FAQ

What is the maximum 1394b data rate supported by the XIO2213BIZAY?

The XIO2213BIZAY supports IEEE 1394b S400 (393.2 Mbps) and S800 (786.4 Mbps) data rates across all three integrated PHY ports. Its OHCI 1.1-compliant controller handles isochronous packet formatting, cycle timer synchronization, and bandwidth arbitration at both speeds without host CPU intervention. Real-world throughput reaches 98.3 MB/s in S800 mode under optimal DMA and ring buffer configuration.

Does the XIO2213BIZAY require an external EEPROM for operation?

The XIO2213BIZAY does not require an external EEPROM to function, but it includes a two-wire serial-bus interface compatible with I²C EEPROMs for optional configuration storage. This interface allows persistent storage of PHY tuning parameters, vendor-specific initialization sequences, and subsystem identification values. Default operation uses internal hardwired defaults, making EEPROM usage optional for most standard 1394b deployments.

How does the XIO2213BIZAY handle PCIe power management states?

The XIO2213BIZAY fully supports PCIe L0–L2/L3 Link States and PCI D0–D3hot/D3cold Device States, including PME wake signaling from 1394b bus events. Its power management logic coordinates state transitions between PCIe and OHCI domains - for example, entering L2 link state triggers OHCI to enter low-power idle while retaining bus context. The Set Slot Power Limit function further enables dynamic power budgeting in multi-slot PCIe chassis.

Can the XIO2213BIZAY be used in a root complex configuration?

The XIO2213BIZAY operates exclusively as a PCIe endpoint, not a root complex. It must be connected downstream of a PCIe root port or switch. However, its PECLK+ and PECLK− outputs can provide a 100 MHz differential reference clock to other downstream PCIe endpoints on the same board, simplifying clock distribution in multi-device add-in cards. It does not generate PCIe configuration transactions or manage hierarchy.

What thermal specifications differentiate the XIO2213BIZAY from the XIO2213AZAY?

The XIO2213BIZAY is rated for operation from –40°C to +105°C junction temperature, whereas the XIO2213AZAY is specified from –40°C to +85°C. Both share identical electrical, functional, and pinout characteristics. The XIO2213BIZAY's extended thermal range is achieved through enhanced packaging and screening, making it suitable for sealed industrial enclosures or high-power-density video capture systems where ambient temperatures exceed 85°C.