SMC032BFY6 datasheet(36/91 Pages) STMICROELECTRONICS

36 / 91 page

Card Configuration

SMCxxxBF

36/91

6.3

Pin Replacement Register (204h in Attribute Memory)

This register contains information on the state of the READY signal when configured in

memory mode and the IREQ signal in I/O mode. See Table 29 and Table 30.

6.3.1

CReady

This bit is set to ‘1’ when the bit RReady changes state. This bit can also be written by the

host.

6.3.2

CWProt

This bit is set to '1' when the bit RWProt changes state. This bit can also be written by the

host.

6.3.3

RReady

This bit is used to determine the internal state of the Ready signal. In I/O mode it is used as

an interrupt request. When written, this bit acts as a mask (MReady) for writing the

corresponding bit CReady.

6.3.4

WProt

This bit is always ‘0’ since the CompactFlash Memory Card does not have a Write Protect

switch. When written, this bit acts as a mask for writing the corresponding CWProt bit.

6.3.5

MReady

This bit acts as a mask for writing the corresponding CReady bit.

6.3.6

MWProt

This bit when written acts as a mask for writing the corresponding CWProt bit.

Table 28.

Card Configuration and Status Register (default value: 00h)

Operation

Read

Changed

SigChg

IOIS8

PwrDwn

Int

Write

SigChg

IOIS8

PwrDwn

Table 29.

Pin Replacement Register (default value: 0Ch)

Operation

D7D6

D5D4

D3D2D1D0

Read

CReady

CWProt

RReady

WProt

Write

CReady

CWProt

RReady

MWProt

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