1394 High Speed Serial Bus

Link Layer Devices

MPEG2Lynx - TSB12LV41
DVLynx - TSB12LV42
GPLynx - TSB12LV31
GP2Lynx - TSB12LV32
PCILynx2 - TSB12LV21B
PCILynx - TSB12LV21A
OHCI-Lynx - TSB12LV22
TSB12LV01
TSB12C01A

Physical Layer Devices

TSB21LV03A
TSB11C01
TSB11LV01
TSB14C01A
TSB41LV0x
1394 Designer's Kits

1394 Serial Bus Devices

OHCI-Lynx - TSB12LV22

Product Description

The TSB12LV22, also called OHCI-Lynx, is an IEEE-1394.a link layer device that provides a 1394 interface for high performance audio, video, and data. This device supports serial bus data rates of 100,200, and 400 Mbps, providing enough bandwidth for even the most demanding multimedia applications.

The OHCI link layer specification provides the host PC a way to speak with high-speed peripherals via a universal driver. Currently, when you add a high-speed interface to your PC (e.g., SCSI), you must also load a specific device driver for each type of host controller. With an OHCI link layer device, the system software will not require a separate driver. This will enable add-in cards in the host OS as well as support in the PC BIOS with one driver.

The OHCI-Lynx/TSB12LV22 is fully compliant with the PCI Power Management Specification, per Microsoft's PC '98 requirements. The OHCI-Lynx design provides PCI bus master bursting, and is capable of transferring data at 132 Mbytes/sec. Deep FIFOs are also provided to buffer 1394 data to overcome PCI latency. An advanced CMOS process is used to achieve low power consumption at PCI clock rates up to 33 MHz. Physical write posting buffers are provided to enhance serial bus performance, and multiple isochronous channels are provided for simultaneous operation of real-time applications. The OHCI-Lynx also provides bus holding buffers on the physical layer interface for simple and cost effective single capacitor isolation.

The TSB12LV22 is compatible with current market solutions but adds benefits that save system resources and time to market. TI offers software for host applications that include both the hardware abstraction layer (HAL) and applications programmer interface (API). Native device driver support for the OHCI-Lynx will be available in Microsoft Windows™ 98 and Windows NT 5.0.

Other features include:

  • Physical write posting of up to three outstanding transactions
  • Serial ROM interface supports for both 1-wire and 2-wire devices
  • Single 3.3V supply operation (with 5 V tolerance) suitable for low power applications
  • Four general purpose I/Os
  • High performance 100-pin TQFP packaging for heat dissipation and minimized board space

Target Applications

  • Add-in Cards

  • Motherboards

  • Device Bay

    For more information on the OHCI-Lynx - TSB12LV22, please contact your local TI sales office.