SMC256BFY6E NUMONYX [Numonyx B.V], SMC256BFY6E Datasheet - Page 36
SMC256BFY6E
Manufacturer Part Number
SMC256BFY6E
Description
Manufacturer
NUMONYX [Numonyx B.V]
Datasheet
1.SMC256BFY6E.pdf
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Card Configuration
6.3
6.3.1
6.3.2
6.3.3
6.3.4
6.3.5
6.3.6
36/91
Table 28.
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
CReady
This bit is set to ‘1’ when the bit RReady changes state. This bit can also be written by the
host.
CWProt
This bit is set to '1' when the bit RWProt changes state. This bit can also be written by the
host.
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.
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.
MReady
This bit acts as a mask for writing the corresponding CReady bit.
MWProt
This bit when written acts as a mask for writing the corresponding CWProt bit.
Table 29.
Operation
Operation
Read
Read
Write
Write
Card Configuration and Status Register (default value: 00h)
Pin Replacement Register (default value: 0Ch)
Changed
D7
D7
0
0
0
SigChg
SigChg
D6
0
0
D6
CReady
CReady
IOIS8
IOIS8
D5
D5
CWProt
CWProt
D4
D4
0
0
Table 29
D3
D3
0
0
1
0
and
PwrDwn
PwrDwn
D2
D2
1
0
Table
RReady
RReady
30.
D1
D1
Int
0
SMCxxxBF
MWProt
WProt
D0
D0
0
0
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