Texas Instruments TSB82AA2BPGE

Overview

TSB82AA2BPGE from Texas Instruments is a discrete IEEE 1394b OHCI-Lynx™ link-layer controller IC that bridges a 33-MHz/32-bit or 33-MHz/64-bit PCI bus to an S100–S800 (100–800 Mbit/s) 1394 physical layer. It delivers 264 MB/s peak throughput in 64-bit mode, features 5-KB asynchronous transmit and 2-KB isochronous receive FIFOs, supports D0–D3hot/cold power states, and operates on a single 3.3-V supply with internal 1.8-V core regulation. It is used in high-end PCs and S800 RAID/SAN peripherals.

For engineers reviewing the TSB82AA2BPGE datasheet, TSB82AA2BPGE pinout, TSB82AA2BPGE application, or TSB82AA2BPGE equivalent, this page provides verified technical context, confirmed pin functions for the 144-PQFP (PGE) package, real-world use cases in digital video and storage subsystems, and two validated alternative controllers with documented functional and interface differences.

Technical Context

The TSB82AA2BPGE implements a full OHCI-compliant 1394b link-layer controller with memory-mapped register access over PCI. It supports both 32-bit and 64-bit PCI interfaces, includes TI-specific extensions for DV/MPEG timestamping and CIP header handling, and integrates deep FIFO buffering to tolerate host latency during sustained S800 isochronous transfers.

Its architecture features hardware-accelerated isochronous context management (dual-buffer mode), out-of-order pipelining for asynchronous transmit requests, physical write posting for up to three outstanding transactions, and programmable transmit thresholds - all coordinated via PCI configuration space registers and OHCI-defined CSR registers mapped at dedicated base addresses.

Key Specifications

Pinout & Package

The TSB82AA2BPGE is packaged in a 144-terminal LQFP (PGE) with 0.5-mm pitch, RoHS-compliant and lead-free. Pin assignments are defined in Figure 2−1 and Table 2−1 of the SCPS172A data manual.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar OHCI-compliant 1394b link-layer controller applications.

Compared with TIB50001GZ and TSB81BA3PGE, the TSB82AA2BPGE uniquely provides discrete, register-accessible OHCI-Lynx link-layer control with full PCI configurability and hardware DV enhancements - making it irreplaceable in high-fidelity video capture and storage subsystems requiring fine-grained timing control.

Availability

TSB82AA2BPGE is available at Aetrix Electronics and suitable for digital video capture systems, RAID/SAN peripherals, industrial machine vision interfaces, and legacy 1394a upgrade modules requiring stable component supply and long-term lifecycle support.

Supply support for TSB82AA2BPGE 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 specializing in analog, embedded processing, and connectivity solutions with leadership in industrial, automotive, and computing markets.

The TSB82AA2BPGE belongs to TI's 1394 OHCI-Lynx product line, designed specifically to deliver ultra-low-power, high-throughput IEEE 1394b link-layer control for PC and peripheral applications demanding S800 performance and digital video timing precision.

FAQ

What is the primary function of the TSB82AA2BPGE in a 1394b system?

The TSB82AA2BPGE serves as a discrete OHCI-compliant IEEE 1394b link-layer controller, acting as the bridge between a 33-MHz PCI bus and a 1394b physical layer device. It handles packet assembly/disassembly, isochronous scheduling, DMA management, and register-level OHCI protocol execution - enabling full S100–S800 operation without requiring host CPU intervention for low-level 1394 traffic.

Does the TSB82AA2BPGE support both 32-bit and 64-bit PCI interfaces?

Yes, the TSB82AA2BPGE supports both 32-bit and 64-bit PCI interfaces via hardware-selectable configuration. In 64-bit mode, it achieves up to 264 MB/s peak throughput; in 32-bit mode, it delivers up to 132 MB/s. The interface mode is determined by strap pins and PCI configuration space settings, and both modes comply fully with PCI Local Bus Specification Rev 2.3.

How does the TSB82AA2BPGE handle digital video (DV) stream timing?

The TSB82AA2BPGE implements hardware-based DV timing enhancements including automatic CIP header stripping on receive and precise timestamp insertion on transmit. These functions are controlled via TI extension registers (e.g., offset A80h), and the device synchronizes timestamps to its internal isochronous cycle timer - ensuring sub-cycle accuracy required for professional DV workflows without CPU overhead.

What power management features does the TSB82AA2BPGE provide?

The TSB82AA2BPGE supports full PCI D0–D3hot/cold power states per the PCI Power-Management Specification and PC 2001 Design Guide. It includes autonomous power state transitions, PME wake event generation, and an integrated 3.3-V-to-1.8-V regulator that reduces operational power - especially in D3cold using auxiliary power. Its low-power CMOS process enables <150 mW typical active power consumption.

Is the TSB82AA2BPGE pin-compatible with earlier TI 1394 controllers like the TSB82AA2A?

No, the TSB82AA2BPGE is not pin-compatible with the TSB82AA2A. While both use the 144-PQFP (PGE) package, signal assignments differ significantly - particularly in PCI 64-bit extension pins (e.g., AD[63:32], C/BE[7:4]) and TI-specific extension signals. Migration requires PCB layout revision and firmware register mapping updates due to architectural enhancements in the TSB82AA2BPGE.