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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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STR720 数据表(PDF) 112 Page - STMicroelectronics |
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STR720 数据表(HTML) 112 Page - STMicroelectronics |
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112 / 401 page  STR720 - DRAM CONTROLLER (DRAMC) 112/401 Size of bank 2 Register (Bank2Size) Address Offset: 38h Reset value: 0000h The Size of bank 2 Register (Bank2Size) is a 16-bit read/write control register used to specify the size of external region 2 (Bank 2). The Bank2Size control bits are the same as Bank1Size register. Size of bank 3 Register (Bank3Size) Address Offset: 3Ch Reset value: 0000h The Size of bank 3 Register (Bank3Size) is a 16-bit read/write control register used to specify the size of external region 3 (Bank 3). The Bank3Size control bits are the same as Bank1Size register. ... 0.0001.1111 32 x 64kBytes = 2MBytes ... 0.0011.1111 64 x 64kBytes = 4MBytes ... 0.0111.1111 128 x 64kBytes = 8MBytes ... 0.1111.1111 256 x 64kBytes = 16MBytes ... 1.1111.1111 512 x 64kBytes = 32MBytes 15 14 13 12 11 10 9 8 7 6543210 reserved SIZE[8:0] rw 15 14 13 12 11 10 9 8 7 6543210 reserved SIZE[8:0] rw Table 29. Size field and the corresponding actual size SIZE field Bank actual size 1 |
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