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ELANSC520 Datasheet(PDF) 44 Page - Advanced Micro Devices |
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ELANSC520 Datasheet(HTML) 44 Page - Advanced Micro Devices |
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44 / 440 page  Reset Generation Registers 3-2 Élan™SC520 Microcontroller Register Set Manual System Board Information (SYSINFO) Memory-Mapped MMCR Offset D70h Register Description This read-only register contains the state that was latched on the RSTLD7–RSTLD0 pins at the assertion of PWRGOOD. Bit Definitions Programming Notes These are status-only bits used to provide static information to software. For example, the system hardware designer can configure pullup resistors as needed on the RSTLD7–RSTLD0 pins to provide board revision information to software. The pullup resistors’ value should be approximately 10 K W. 7 6 5 4 3 2 1 0 Bit RST_LD[7–0] Reset ???????? R/W R Bit Name Function 7 –0 RST_LD[7–0] Reset Latched Input Data The microcontroller initializes this bit field at the assertion of the PWRGOOD signal by latching the state of the shared RSTLD7 –RSTLD0 pins. The information in this bit field remains static after it is latched. |
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