Texas Instruments TSB82AA2IPGE

Overview

TSB82AA2IPGE from Texas Instruments is a discrete IEEE 1394b OHCI-Lynx link-layer controller IC that bridges 33-MHz PCI (32-/64-bit selectable) and 1394b PHY-layer devices. It supports serial data rates up to 800 Mbits/s (S800), features 5K asynchronous + 2K isochronous transmit FIFOs and 2K+2K receive FIFOs, operates from a single 3.3-V supply with internal 1.8-V core, and implements D0–D3 power states with PME support - enabling high-throughput, low-latency digital video/audio transfer in PC-based peripherals.

For engineers reviewing the TSB82AA2IPGE datasheet, TSB82AA2IPGE pinout, TSB82AA2IPGE application, or TSB82AA2IPGE equivalent, key selection considerations include S800 isochronous bandwidth capability, deep FIFO buffering for latency tolerance, PCI power management compliance (PCI Bus Power Management Interface Specification), TI's 1394b PHY interface compatibility (e.g., TSB81BA3), and LQFP-144 package suitability for space-constrained host controller designs.

Technical Context

The TSB82AA2IPGE implements a memory-mapped OHCI-compliant register set per IEEE 1394a–2000 and 1394 Open Host Controller Interface Specification, with nonprefetchable configuration space accessed via PCI configuration cycles. Its physical data path includes hardware-accelerated SBP-2 support, physical write posting for up to three outstanding transactions, and out-of-order pipelining for asynchronous transmit requests.

It integrates TI-specific digital video enhancements including automatic CIP timestamp insertion for transmitted DV/MPEG streams and CIP header stripping for received DV streams - enabled via TI extension register at offset A80h and compliant with IEC 61883-1:1998. The device also supports CYCLEIN/CYCLEOUT synchronization and MFUNC general-purpose I/O for external timer control.

Key Specifications

Pinout & Package

TSB82AA2IPGE is housed in a 144-pin LQFP (PGE) package measuring 20.20 mm × 20.20 mm × 1.60 mm max, with 0.5-mm pitch, gull-wing leads, and JEDEC MS-026 mechanical compliance. Pinout is defined in TI datasheet SLLA221 (June 2006), Section 5 "Signal Descriptions" and Figure 5–1 "Pin Assignments".

Key Features

Applications

Equivalent & Alternatives

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

Compared with TSB82AA2PGE, TSB82AA2IPGE offers tighter MSL control (Level-1 unlimited reflow) and legacy-compatible finish, while TSB82AA2GGW provides higher I/O density at the cost of assembly complexity - making TSB82AA2IPGE optimal for cost-sensitive, high-volume PCI add-in cards requiring robust manufacturability.

Availability

TSB82AA2IPGE is available at Aetrix Electronics and suitable for digital video capture cards, RAID storage controllers, professional audio interfaces, and medical imaging workstations requiring stable component supply, long-lifecycle support, and industrial-grade reliability.

Supply support for TSB82AA2IPGE 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, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.

The TSB82AA2IPGE belongs to TI's 1394b OHCI-Lynx product line, engineered specifically for high-throughput, low-power PCI-to-FireWire bridging in PC peripheral and professional AV equipment - emphasizing S800 bandwidth, isochronous determinism, and intelligent power state management.

FAQ

What is the primary function of the TSB82AA2IPGE in a system architecture?

The TSB82AA2IPGE serves as an IEEE 1394b OHCI-compliant link-layer controller, acting as the dedicated bridge between a 33-MHz PCI bus (32-/64-bit) and a 1394b PHY device such as the TSB81BA3. It handles packet assembly/disassembly, isochronous scheduling, DMA management, and register-level OHCI protocol enforcement - enabling full S800 (786.432 Mbits/s) FireWire connectivity without host CPU overhead. Its role is strictly link-layer; it does not integrate PHY functionality.

Does the TSB82AA2IPGE support both 32-bit and 64-bit PCI configurations?

Yes, the TSB82AA2IPGE supports both 32-bit and 64-bit PCI modes via hardware-selectable configuration pins (PCI64#). In 64-bit mode, it achieves up to 264 MB/s theoretical throughput; in 32-bit mode, up to 132 MB/s. The device automatically detects bus width during PCI enumeration and configures its internal data paths accordingly - no firmware reconfiguration is needed to switch modes.

How does the TSB82AA2IPGE manage power in low-activity states?

The TSB82AA2IPGE implements full PCI Power Management Specification compliance, supporting D0 through D3hot/cold states. In D3cold, it draws <50 µA from auxiliary power while retaining configuration context. Its integrated 3.3-V-to-1.8-V regulator shuts down core logic selectively, and the PCI_CLKRUN protocol allows dynamic clock gating - reducing active power to ~250 mW typical at S400 traffic and <10 mW in D3cold.

Can the TSB82AA2IPGE be used with non-TI 1394b PHY devices?

Yes, the TSB82AA2IPGE interfaces with any IEEE 1394b-compliant PHY that adheres to the standard 8-bit parallel PHY interface timing and signaling (as defined in IEEE 1394a–2000 Annex J). While TI validates with its own TSB81BA3, third-party PHYs meeting the same electrical and protocol specifications - including proper strobe/data setup/hold and reset synchronization - are interoperable without modification to the TSB82AA2IPGE.

What is the purpose of the MFUNC1 pin on the TSB82AA2IPGE?

The MFUNC1 pin on the TSB82AA2IPGE is a multifunction terminal configurable as CYCLEIN/CYCLEOUT for external cycle timer synchronization, general-purpose I/O, or PCI_CLKRUN signaling. When used for cycle timing, it enables precise alignment of isochronous packet timestamps with external video/audio reference clocks - critical for professional AV gear requiring sample-accurate synchronization across FireWire and PCI domains.