TSB12LV26

OHCI-Lynx 基于 PCI 的 IEEE 1394 主机控制器

The Texas Instruments 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.

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3.3-V and 5-V PCI bus signaling

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3.3-V supply core voltage is internally regulated to 1.8 V

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Serial bus data rates of 100M bits/s, 200M bits/s, and 400M bits/s

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Physical write posting of up to three outstanding transactions

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Serial ROM interface supports 2-wire devices

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External cycle timer control for customized synchronization

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PCI burst transfers and deep FIFOs to tolerate large host latency

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Two general-purpose I/Os

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Fabricated in advanced low-power CMOS process

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Packaged in 100-terminal LQFP PZT

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PCI_CLKRUN\ protocol

OHCI-Lynx and are trademarks of Texas Instruments.