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SMC032BFY6 Datasheet(PDF) 34 Page - STMicroelectronics |
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SMC032BFY6 Datasheet(HTML) 34 Page - STMicroelectronics |
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34 / 91 page  Card Configuration SMCxxxBF 34/91 6.1 Configuration Option Register (200h in Attribute Memory) The Configuration Option Register is used to configure the Card’s interface, address decoding and interrupt to the Card (see Table 26). 6.1.1 SRESET Setting the SRESET bit to ‘1’ and returning the bit ‘0’ places the CompactFlash Storage Card in the Reset state. Setting this bit to ‘1’ is equivalent to asserting the RESET signal except that the SRESET bit is not cleared. Returning the SRESET bit to ‘0’ leaves the CompactFlash Storage Card in the same un-configured Reset state as after a power-up and hardware reset. This bit is set to ‘0’ at power-up and taking the Card through a hardware reset. 6.1.2 LevlREQ This bit is set to one (1) when Level Mode Interrupt is selected, and zero (0) when Pulse Mode is selected. Set to zero (0) after Power Up. 6.1.3 Conf5 - Conf0 (Configuration Index) These bits are used to select the operation mode of the Card as shown in Table 27. This bit is set to ‘0’ after Power Up. Table 25. CompactFlash Memory Card Configuration Registers Decoding –CE2 –CE1 –REG –OE –WE A10 A9 A8- A4 A3 A2 A1 A0 Selected Register X 0 0 0 1 0 1 00 0 0 0 0 Configuration Option Register Read X 0 0 1 0 0 1 00 0 0 0 0 Configuration Option Register Write X 0 0 0 1 0 1 00 0 0 1 0 Card Status Register Read X 0 0 1 0 0 1 00 0 0 1 0 Card Status Register Write X 0 0 0 1 0 1 00 0 1 0 0 Pin Replacement Register Read X 0 0 1 0 0 1 00 0 1 0 0 Pin Replacement Register Write X 0 0 0 1 0 1 00 0 1 1 0 Socket and Copy Register Read X 0 0 1 0 0 1 00 0 1 1 0 Socket and Copy Register Write Table 26. Configuration Option Register (default value: 00h) Operation D7 D6 D5D4D3D2D1 D0 R/W SRESET LevlREQ Conf5 Conf4 Conf3 Conf2 Conf1 Conf0 |
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