SMC032BFY6 datasheet(34/91 Pages) STMICROELECTRONICS

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

A8-

A3 A2 A1 A0

Selected Register

Configuration Option Register Read

Configuration Option Register Write

Card Status Register Read

Card Status Register Write

Pin Replacement Register Read

Pin Replacement Register Write

Socket and Copy Register Read

Socket and Copy Register Write

Table 26.

Configuration Option Register (default value: 00h)

Operation

D5D4D3D2D1

R/W

SRESET

LevlREQ

Conf5

Conf4

Conf3

Conf2

Conf1

Conf0

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