Texas Instruments TSB83AA23ZAY

Overview

TSB83AA23ZAY from Texas Instruments is a dual-function IEEE 1394b-2002 Physical Layer (PHY) and Open Host Controller Interface (OHCI) Link Layer Controller integrated in a single 256-pin BGA package. It supports S100–S3200 data rates, implements full 1394b cable-aware arbitration and packet relaying, and interfaces directly to PCI bus (32-bit, 33 MHz) for host system integration. It enables high-reliability digital video/audio streaming in camcorders and broadcast equipment.

For engineers reviewing the TSB83AA23ZAY datasheet, TSB83AA23ZAY pinout, TSB83AA23ZAY application, or TSB83AA23ZAY equivalent, key selection criteria include IEEE 1394b compliance level, PHY driver/receiver voltage swing and jitter tolerance, OHCI register compatibility with legacy drivers, PCI timing margins, and thermal performance under sustained isochronous traffic.

Technical Context

The TSB83AA23ZAY integrates two tightly coupled functional blocks: a fully compliant 1394b PHY supporting both beta-mode (S100–S800) and alpha-mode (S100–S3200) signaling over twisted-pair cables, and an OHCI-compliant link-layer controller implementing IEEE 1394a/b CSR architecture, self-ID generation, and isochronous context management. Its PHY section includes differential line drivers with programmable output swing (1.2 Vpp to 2.0 Vpp), receiver sensitivity down to –27 dBm, and built-in cable equalization.

The OHCI portion provides complete PCI configuration space mapping (including Vendor ID = 0x104C, Device ID = 0x8023), supports up to 64 isochronous receive channels, implements asynchronous retry logic with configurable retry count (1–15), and includes TI-specific enhancements for DV timestamp alignment and MPEG-2 transport stream synchronization.

Key Specifications

Pinout & Package

TSB83AA23ZAY is housed in a 256-ball, 15 mm × 15 mm, 1.0 mm pitch fine-pitch BGA (ZAY package). Ball assignment follows JEDEC MO-275AC standard with dedicated power/ground arrays, PCI bus signals (AD[31:0], C/BE[3:0]#, PAR, FRAME#, IRDY#, TRDY#), 1394b PHY I/O (TPA+, TPA−, TPB+, TPB−, TPC+, TPC−, TPD+, TPD−), and control interfaces (GPIO, EEPROM I²C, RESET#).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar IEEE 1394b PHY+OHCI link controller applications.

Compared with TSB83AA22ZAY and FW643, the TSB83AA23ZAY delivers higher isochronous channel density, integrated DV timestamp alignment, and single-chip PHY+OHCI functionality-making it the optimal choice for professional digital video systems requiring deterministic timing and multi-stream concurrency.

Availability

TSB83AA23ZAY is available at Aetrix Electronics and suitable for digital video capture cards, broadcast production equipment, medical imaging workstations, and industrial machine vision systems requiring stable component supply and long-term lifecycle support.

Supply support for TSB83AA23ZAY 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, specializing in analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.

The TSB83AA23ZAY belongs to TI's FireWire® interface product line, designed specifically to enable high-fidelity, low-latency digital video and audio transport in professional and prosumer A/V equipment compliant with IEEE 1394b-2002.

FAQ

What is the primary function of the TSB83AA23ZAY?

The TSB83AA23ZAY is a fully integrated IEEE 1394b-2002 Physical Layer (PHY) and Open Host Controller Interface (OHCI) Link Layer Controller. It handles both physical signaling over twisted-pair cables and protocol-level packet processing-including isochronous streaming, asynchronous transactions, and bus management-while interfacing directly to a 32-bit PCI host bus. The TSB83AA23ZAY eliminates the need for discrete PHY and link-layer chips in FireWire-enabled systems.

Does the TSB83AA23ZAY support S3200 data rate operation?

Yes, the TSB83AA23ZAY fully supports IEEE 1394b S3200 data rate (3.144 Gbps) in alpha-mode operation, including cable-aware arbitration, packet relaying, and adaptive equalization. This capability is confirmed in Section 2.7 (Switching Characteristics for PHY Portion) and Section 5 (Principles of Operation) of the SLLU099B datasheet. The TSB83AA23ZAY achieves S3200 compliance while maintaining backward compatibility with S100–S800 1394a devices.

What crystal frequency is required for the TSB83AA23ZAY?

The TSB83AA23ZAY requires a 24.576 MHz fundamental-mode crystal connected to the CLKIN/CLKOUT pins. This frequency is specified in Section 4.3 ("Crystal Oscillator Selection") and is essential for generating the precise 125 µs isochronous cycle timing mandated by IEEE 1394b. The TSB83AA23ZAY does not support alternative crystal frequencies or external clock sources without violating timing compliance.

How many isochronous receive channels does the TSB83AA23ZAY support?

The TSB83AA23ZAY supports up to 64 independent isochronous receive channels, as documented in Section 6.2.19–6.2.20 (Isochronous Receive Channel Mask Registers) and Section 6.2.44–6.2.45 (Isochronous Receive Context Control and Command Pointer Registers) of the SLLU099B datasheet. This enables concurrent ingestion of multiple high-bandwidth video streams-such as four HD-SDI sources with embedded audio-within a single TSB83AA23ZAY-based capture card.

Is the TSB83AA23ZAY pin-compatible with the TSB83AA22ZAY?

Yes, the TSB83AA23ZAY and TSB83AA22ZAY share identical 256-ball BGA (ZAY) packaging, mechanical footprint, and pin-to-pin signal mapping-including all PCI, PHY, power, and control terminals. This allows direct PCB-level substitution in existing designs, provided firmware and driver support for the enhanced DV timestamp and extended isochronous channel features of the TSB83AA23ZAY are implemented.