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SST48CF008 Datasheet(PDF) 23 Page - Silicon Storage Technology, Inc |
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SST48CF008 Datasheet(HTML) 23 Page - Silicon Storage Technology, Inc |
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23 / 60 page ![]() Data Sheet CompactFlash Card SST48CF008 / 016 / 024 / 032 / 048 / 064 / 096 / 128 / 192 / 256 23 ©2001 Silicon Storage Technology, Inc. S71125-03-000 9/01 375 2.4 Card Configuration The CompactFlash cards are identified by appropriate information in the Card Information Structure (CIS). The fol- lowing configuration registers are used to coordinate the I/O spaces and the Interrupt level of cards that are located in the system. In addition, these registers provide a method for accessing status information about the Compact- Flash card that may be used to arbitrate between multiple interrupt sources on the same interrupt level or to replace status information that appears on dedicated pins in memory cards that have alternate use in I/O cards. Note: The location of the card configuration registers should always be read from the CIS locations 0000H to 0198H. No writes should be per- formed to the CompactFlash card attribute memory except to the card configuration register addresses. All other attribute memory loca- tions are reserved. TABLE 2-11: REGISTERS AND MEMORY SPACE DECODING -CE2 -CE1 -REG -OE -WE A10 A9 A8-A4 A3 A2 A1 A0 Selected Space 1 1 X X X X XXXX X X X Standby X 0 0 0 1 0 1 XX X X X 0 Configuration Registers Read 1 0 1 0 1 X X XX X X X X Common Memory Read (8 bit D7-D0) 0 1 1 0 1 X X XX X X X X Common Memory Read (8 bit D15-D8) 0 0 1 0 1 X X XX X X X 0 Common Memory Read (16 bit D15-D0) X 0 0 1 0 0 1 XX X X X 0 Configuration Registers Write 1 0 1 1 0 X X XX X X X X Common Memory Write (8 bit D7-D0) 0 1 1 1 0 X X XX X X X X Common Memory Write (8 bit D15-D8) 0 0 1 1 0 X X XX X X X 0 Common Memory Write (16 bit D15-D0) X 0 0 0 1 0 0 XX X X X 0 Card Information Structure Read 1 0 0 1 0 0 0 XX X X X 0 Invalid Access (CIS Write) 1 0 0 0 1 X X XX X X X 1 Invalid Access (Odd Attribute Read) 1 0 0 1 0 X X XX X X X 1 Invalid Access (Odd Attribute Write) 0 1 0 0 1 X X XX X X X X Invalid Access (Odd Attribute Read) 0 1 0 1 0 X X XX X X X X Invalid Access (Odd Attribute Write) T2-11.0 375 TABLE 2-12: 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 Reg Read X 0 0 1 0 0 1 00 0 0 0 0 Configuration Option Reg 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 T2-12.0 375 |
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