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FireBoard 400 OHCI
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Physical Layer

  • Supports Provisions of IEEE-1394 Standard and the 1394a-2000 Supplement for High Performance Serial Bus.
  • Provides Three Fully Compliant Cable Ports at 100/200/400 Megabits per Second.
  • Cable Ports Monitor Line Conditions for Active Connection to Remote Node
  • 25.576 MHz Crystal Oscillator and PLL Provide Transmit/Receive Data at 100/200/400 Megabits per Second, and Link-Layer Controller Clock at 50 MHz.
  • Node Power-Class Information Signaling for System Power Management.
  • Cable Power Presence Monitoring.

Link Layer and PCI Interface

  • Designed to 1394 Open Host Controller Interface (OHCI) Specification
  • IEEE 1394-1995 Compliant and Compatible with Proposal 1394A
  • Compliant to Latest PCI Specification, PCI 2.2
  • PCI Power Management Compliant
  • Supports Serial Bus Data Rates of 100, 200, and 400 Mbits/s
  • Implements PCI Burst Transfers and Deep FIFOs to Tolerate Large Host Latency

External Power Supply
The FireBoardT400 has an has an optional power connector in order to receive the cable power not only from the +12V of the PCI connector but also from an external power connector provided by the host PC power supply.

The package contains:

  • One FireBoardT400-OHCI PCI adapter
  • ubCore (Unibrain's 1394 core technology)
  • FireNetNT4 (1394 Networking driver for Windows NT 4.0 ONLY)
  • Fire-i (1394 camera & control Utility)
  • FireAPI/Fire-iAPI (ubCore) license

Unibrain's FireBoardT400-OHCI 
Host Adapter brings high-performance IEEE-1394 (FireWire, i-Link) technology to PCI systems.

FireBoardT 400-OHCI Design Issues

Logic Design The entire design of Unibrain's FireBoardT 400 OHCI is based on the two main IEEE-1394 chip-sets of Texas Instruments: the Texas Instruments TSB41AB3 IEEE-1394 400Mbps PHY layer transceiver and the Texas Instruments TSB12LV26 (OHCI-Lynx) IEEE-1394 OHCI link controller to PCI bus.

PCB Design
The FireBoardT 400 OHCI card is a four-layer printed circuit PCI board. Two of the layers provide the signal interconnections (signal layers) while the remaining two layers provide the required power and ground interconnections (plane layers).

OS Supported
Windows NT4/98SE/Me/2000/XP



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