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TSB12LV21BPGF Fiches technique(PDF) 2 Page - Texas Instruments |
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TSB12LV21BPGF Fiches technique(HTML) 2 Page - Texas Instruments |
2 / 7 page www.ti.com TSB12LV21B TSB12LV21BI TSB12LV21BM SLLA213 – JUNE 2006 The RAM, ROM, AUX, ZV, and general-purpose I/O (GPIO) ports collectively make up the local bus interface. These ports mapped into the PCI address, can be accessed either through the PCI bus or through internal DMA transactions. Internal transactions do not appear on the external PCI bus, thereby conserving PCI bandwidth. DMA packet control lists or other data may be stored in external RAM or ROM attached to the local bus interface. This further reduces PCI bus use and generally improves performance. The ZV local bus port is designed to transfer data from 1394 video devices to an external device connected to the PCILynx-2 ZV port. This interface provides a method for receiving 1394 digital camera packets directly from a ZV-compliant device attached to the local bus interface. Built-in test registers, a dedicated test output terminal, and four GPIO terminals allow observation of internal states and provide a convenient software debug capability. Programmable interrupts are available to inform driver software of important events, such as 1394 bus resets and DMA-to-PCL transfer completion. The 3.3-V internal operation provides reduced power consumption, while maintaining compatibility with 5- signaling environments. The PCI interface is compatible with both 3-V and 5-V PCI systems. The TSB12LV21B is characterized for operation over the commercial temperature range of 0 °C to 70°C. The TSB12LV21BI is characterized for operation over the industrial temperature range of –40 °C to 85°C. The TSB12LV21BM is characterized for operation over the military temperature range of –55 °C to 125°C. NOTE: This product is for high-volume CE applications only. For a complete datasheet or more information contact support@ti.com. 2 Submit Documentation Feedback |
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