TSB82AA2ZGW

Controllers Overview

The TSB82AA2ZGW is a discrete IEEE 1394b link-layer device manufactured by Texas Instruments. It operates as an OHCI-Lynx controller, interfacing between a PCI local bus and a compatible 1394b PHY layer. The component supports serial bus data rates of 100M bits/s, 200M bits/s, 400M bits/s, and 800M bits/s. It utilizes a single 3.3-V supply with an internal 1.8-V core voltage regulator. The package is a 176-ball MicroStar BGA (GGW). Key specifications include transmit FIFOs of 5K asynchronous and 2K isochronous entries, and receive FIFOs of 2K asynchronous and 2K isochronous entries.

Controllers Feature Summary

• Supports physical write posting for up to three outstanding transactions to improve bus efficiency.
• Includes deep transmit and receive FIFOs to tolerate large host latencies and prevent data overrun.
• Features hardware enhancements for digital video and MPEG data stream reception and transmission.
• Fully compliant with the PCI Bus Power Management Interface Specification supporting D0 through D3 power states.

Controllers Applications

• High-end PC motherboard designs requiring high-throughput FireWire connectivity
• S800 RAID peripheral interface implementations
• Storage Area Network (SAN) based peripheral connections

Controllers Procurement Notes

Verify the specific ordering suffix ZGW corresponds to the Green RoHS-compliant variant with SNAGCU ball finish and Level-3 moisture sensitivity rating. Confirm that the active status aligns with current production requirements. Ensure compatibility with the intended PCB layout for the 176-ball MicroStar BGA package before finalizing procurement orders.

Controllers Selection Notes

Select this component when designing systems requiring S800 speed support via the 1394b standard. It is suitable for applications needing robust latency handling through deep FIFO buffers. Verify that the system architecture accommodates the 176-ball BGA footprint and that the 3.3-V single supply constraint meets the power budget.

Controllers Part Context

This part belongs to the TSB82AA2 series of 1394b OHCI-Lynx controllers. It serves as the link-layer bridge between PCI buses and 1394 PHY devices like the TSB81BA3. The ZGW suffix specifically denotes the 176-ball MicroStar BGA package option within the broader family of LQFP and BGA variants offered by Texas Instruments.

Controllers Replacement Considerations

TSB82AA2GGW: Same functional controller in a different 176-ball BGA package configuration.

Controllers FAQ

What are the specific FIFO depths available for asynchronous and isochronous data?

The device provides a 5K entry transmit FIFO for asynchronous data and a 2K entry transmit FIFO for isochronous data. Receive capabilities include 2K entries for both asynchronous and isochronous streams.

Does the TSB82AA2ZGW support power management states?

Yes, it fully supports D0, D1, D2, and D3 hot/cold power states as specified in the PCI Bus Power Management Interface Specification and includes PME wake event support.