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ELANSC520 Datasheet(PDF) 111 Page - Advanced Micro Devices |
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ELANSC520 Datasheet(HTML) 111 Page - Advanced Micro Devices |
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111 / 440 page ![]() ROM/Flash Controller Registers Élan™SC520 Microcontroller Register Set Manual 9-3 Programming Notes The device attached to the BOOTCS chip select signal is used as the boot device. Therefore, upon reset this device’s DGP and WIDTH bit field values must be delivered to the ROM controller via the CFG2–CFG0 pinstraps. For all other ROM devices, this configuration information is programmed by the initialization software. 3 Reserved Reserved This bit field should be written to 0 for normal system operation. 2 –0 FIRST_DLY [2–0] BOOTCS Device Delay for First Access This bit field is used to configure the number of wait states for the first access to the ROM, and for subsequent accesses if the MODE bit is 0. 000 = 0 wait states 001 = 1 wait state 010 = 2 wait states 011 = 3 wait states 100 = 4 wait states 101 = 5 wait states 110 = 6 wait states 111 = 7 wait states Bit Name Function |
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