PCI转1394: TI的OHCI-Lynx™主机控制器
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"TI-TSB12LV26.pdf 是一款由德州仪器（Texas Instruments）推出的PCI转1394主机控制器，型号为TSB12LV26I，适用于将PCI总线接口转换为IEEE 1394（FireWire）接口，以实现计算机与支持1394设备之间的通信。"
TI的TSB12LV26I是基于PCI局部总线规范设计的，它兼容PCI Bus Power Management Interface Specification，以及IEEE 1394-1995标准和1394开放主机控制器接口规范。该控制器的关键特性包括：
1. **外部周期定时器控制**：允许用户自定义同步策略，适应不同应用场景的需求。
2. **3.3V和5V PCI总线信号**：支持两种电压等级，确保与多种PCI插槽的兼容性。
3. **PCI突发传输和深FIFO**：提高数据传输效率，即使在大型主机延迟下也能保持稳定性能。
4. **3.3V电源（核心电压内部调节至1.8V）**：低功耗设计，同时保证了设备的正常运行。
5. **两个通用I/O端口**：提供额外的输入输出功能，可扩展系统功能。
6. **串行总线数据速率**：支持100Mbits/s、200Mbits/s和400Mbits/s的高速率，满足高速数据传输需求。
7. **先进的低功耗CMOS工艺**：采用先进工艺制造，降低了能耗，提高了芯片的能效。
8. **物理写入提交**：可处理最多三个待处理的事务，优化了PCI总线的性能。
9. **100引脚LQFP封装**：紧凑的封装形式方便在主板上集成。
10. **串行ROM接口**：支持两线设备，便于固件更新和配置。
11. **PCI_CLKRUN协议**：遵循PCI时钟运行协议，确保与PCI总线的正确交互。
这款设备的用途广泛，可以用于连接各种支持1394标准的外设，如硬盘驱动器、数码相机、打印机、扫描仪等。通过PCI接口，它可以无缝地集成到个人电脑系统中，提供高速、可靠的连接。其低功耗特性使得它也适用于移动设备和嵌入式系统。由于其符合多个行业标准，TSB12LV26I是构建兼容1394接口系统的理想选择。
www.ti.com
FEATURES
DESCRIPTION
TSB12LV26
TSB12LV26I
SLLA214 – JUNE 2006
OHCI-Lynx™ PCI-Based IEEE 1394 Host Controller
• External cycle timer control for customized
synchronization
• 3.3-V and 5-V PCI bus signaling
• PCI burst transfers and deep FIFOs to
• 3.3-V supply (core voltage is internally
tolerate large host latency
regulated to 1.8 V)
• Two general-purpose I/Os
• Serial bus data rates of 100M bits/s, 200M
bits/s, and 400M bits/s • Fabricated in advanced low-power CMOS
process
• Physical write posting of up to three
outstanding transactions • Packaged in 100-terminal LQFP (PZT)
• Serial ROM interface supports 2-wire devices • PCI_CLKRUN protocol
The Texas Instruments TSB12LV26 device is a PCI-to-1394 host controller compliant with the PCI Local Bus
Specification, PCI Bus Power Management Interface Specification, IEEE Std 1394-1995, and 1394 Open Host
Controller Interface Specification. The chip provides the IEEE 1394 link function and is compatible with 100M
bits/s, 200M bits/s, and 400M bits/s serial bus data rates.
As required by the 1394 Open Host Controller Interface Specification (OHCI) and IEEE Std 1394a-2000, internal
control registers are memory-mapped and nonprefetchable. The PCI configuration header is accessed through
configuration cycles specified by PCI and provides plug-and-play (PnP) compatibility. Furthermore, the
TSB12LV26 device is compliant with the PCI Bus Power Management Interface Specification, per the PC 99
Design Guide requirements. TSB12LV26 device supports the D0, D2, and D3 power states.
The TSB12LV26 design provides PCI bus master bursting and is capable of transferring a cacheline of data at
132M bytes/s after connection to the memory controller. Since PCI latency can be large, deep FIFOs are
provided to buffer 1394 data.
The TSB12LV26 device provides physical write posting buffers and a highly-tuned physical data path for SBP-2
performance. The TSB12LV26 device also provides multiple isochronous contexts, multiple cacheline burst
transfers, advanced internal arbitration, and bus-holding buffers on the PHY/link interface.
An advanced CMOS process achieves low power consumption and allows the TSB12LV26 device to operate at
PCI clock rates up to 33 MHz.
NOTE:
This product is for high-volume PC applications only. For a complete datasheet or
more information contact support@ti.com.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
OHCI-Lynx is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2006, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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