PCI1221 Datasheet, PDF (106/123 Pages) Texas Instruments – PC CARD CONTROLLERS

socket present-state register
Bit
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Name
Socket present state
Type
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Default
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
Bit
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
Name
Socket present state
Type
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Default
0
0
0
0
0
0
0
0
0
X
0
0
0
X
X
X
Register: Socket present state
Type:
Read only
Offset:
CardBus socket address + 08h
Default: 3000 00XXh
Description: The socket present-state register reports information about the socket interface. Write
transactions to the socket force event register are reflected here, as well as general socket
interface status. Information about PC Card V_CC support and card type is only updated at
each insertion. Also note that the PCI1221 uses CCD1 and CCD2 during card identification,
and changes on these signals during this operation are not reflected in this register. See
Table 55 for a complete description of the register contents.
106
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