SMC032BFY6 datasheet(33/91 Pages) STMICROELECTRONICS

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SMCxxxBF

Card Configuration

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Card Configuration

The CompactFlash Memory Card is identified by information in the Card Information

Structure (CIS). The Card has four configuration registers (Table 24 and Table 25).

●

Configuration Option Register

●

Pin Replacement Register

●

Card Configuration and Status Register

●

Socket and Copy Register

They are used to coordinate the I/O spaces and the Interrupt level of cards that are located

in the system. In addition, in I/O Card mode these registers provide a method for accessing

status information that would normally appear on dedicated pins in Memory Card mode.

The base address of the card configuration registers is 200h in the Attribute Memory space.

No write operation should be performed to the attribute memory area except for the

configuration register addresses. All other attribute memory locations are reserved. See

Section 6.5: Attribute Memory Function.

Table 24.

CompactFlash Memory Card Registers and Memory Space Decoding

–CE2 –CE1

–REG

–OE –WE A10

A9 A8-A4 A3 A2 A1 A0

Selected Space

XXX

Standby

XXX

Configuration Registers Read

XXX

Common Memory Read (D7 to D0)

XXX

Common Memory Read (D15 to D8)

XXX

Common Memory Read (D15 to D0)

XXX

Configuration Registers Write

XXX

Common Memory Write (D7 to D0)

XXX

Common Memory Write (D15 to D8)

XXX

Common Memory Write (D15 to D0)

XXX

Card Information Structure Read

XXX

Invalid Access (CIS Write)

XXX

Invalid Access (Odd Attribute Read)

XXX

Invalid Access (Odd Attribute Write)

XXX

Invalid Access (Odd Attribute Read)

XXX

Invalid Access (Odd Attribute Write)

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