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DLPC900 Fiches technique(PDF) 44 Page - Texas Instruments |
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DLPC900 Fiches technique(HTML) 44 Page - Texas Instruments |
44 / 83 page Bootloader Firmware 0xF9000000 Boot Flash CS1 Images 0xF97FFFFF 0xF9700000 Reserved Bootloader Firmware 0xF9000000 0xF93FFFFF 0xF9300000 Boot Flash CS1 Reserved 44 DLPC900 DLPS037D – OCTOBER 2014 – REVISED MARCH 2019 www.ti.com Product Folder Links: DLPC900 Submit Documentation Feedback Copyright © 2014–2019, Texas Instruments Incorporated Notice carefully that the addresses from CS2 to CS0 are not ascending linearly in Figure 20. Therefore, an image cannot span across CS2 and CS0. If an image cannot entirely fit in CS2, then the entire image must be moved and stored in CS0. The DLP LightCrafter 6500 and 9000 GUI software automatically checks for this and performs the necessary image adjustments to store the images into the flash memory. 7.3.5.4 Minimizing Memory Space Depending on the application design requirements of the product, the amount of memory may be reduced. This may include reducing the number of flash memory components or the memory size of the flash memory component. As you can see from Figure 20, the firmware resides in CS1, and the amount of memory the firmware occupies is usually less than 1 Mbit. With this in mind, the design engineer can conclude that memory is only required to be present on CS1 if no images are needed for the design. For example, if the application design only requires the DLPC900 to operate in Video Mode, then the flash memory components on CS0 and CS2 are not required and can be left out. Moreover, since the firmware only occupies about 1 Mbit of memory, then a smaller density flash memory component can be used such as a 4-Mbit rather than a 16-Mbit component. Figure 21 shows the memory space for this example. Figure 21. One 4-Mbit Flash Memory The same memory space shown in Figure 21 also applies to Video Pattern Mode. In this mode, the images are streamed from an external video source directly into the internal memory of the DLPC900. Another operating mode that can use this same memory configuration is Pattern On-The-Fly Mode because the images are streamed over the USB or I2C interfaces directly into the internal memory of the DLPC900. These three operating modes are excellent opportunities for minimizing the flash memory because they don’t require images to be stored in flash memory. However, there exists one mode that may require additional memory because this mode requires images to be stored in flash memory. When the DLPC900 is operating in Pre-Stored Pattern Mode, the DLPC900 reads all the required images from flash memory into its internal memory when the pattern sequence is started. The amount of flash memory depends on the needs of the application. For example, if the application design requires only a few images, and the images and firmware can fit in one 4- Mbit flash component, then the memory space in Figure 21 can be used. However, if more memory is needed, then one 8-Mbit or one 16-Mbit flash component can be used as shown in Figure 22 and Figure 23. Figure 22. One 8-Mbit Flash Memory |
Numéro de pièce similaire - DLPC900_V01 |
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Description similaire - DLPC900_V01 |
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