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Motor de Búsqueda de Datasheet de Componentes Electrónicos |
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Motor de Búsqueda de Datasheet de Componentes Electrónicos |
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STV9937 Datasheet(PDF) 28 Page - STMicroelectronics |
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STV9937 Datasheet(HTML) 28 Page - STMicroelectronics |
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28 / 49 page  RAM Specification STV9937 28/49 The default window RAM allocations are listed in Table 31. Window 1: 10 blocks of 32 words = 320 characters (ALW1 = 9). Window 2: 4 blocks of 32 words = 128 characters (ALW2 = 3). Window 3: 3 blocks of 32 words = 96 characters (ALW3 = 2). Window 4: the remaining RAM (3 blocks = 96 characters). 5.4 Window Reset All the RAM data from one of the four OSD windows can be reset by writing to bits RESETW[3:0]. When the RESETW bit is set to 1, all the RAM data in the allocation memory space of the corresponding OSD window is reset. These bits are automatically cleared when the RAM allocation reset is finished. Table 31: Window RAM Default Values ALWi Default Description ALW1 9h 320 Characters (10 blocks) ALW2 3h 128 Characters (4 blocks) ALW3 2h 96 Characters (3 blocks) Table 32: RAM Allocation Enable and Reset FWR FAC Default Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 80h 0Bh 0h RESETW[3:0] |
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