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.