Cardbus socket event register – Digi NS9750 User Manual
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CardBus Socket Event register
Address: A030 1000
The CardBus Socket Event register is used for CardBus applications only, and indicates
a change in socket status.
Register bit assignment
D04
R/W
CVS1
0
Value driven out on CVS1 pin during socket
interrogation.
D03
R
CCLK_STOP_NACK
0
Response to request to negate CardBus
CCLKRUN# using CCLKRUN# protocol
0
CCLKRUN# request not refused yet.
Check CCLK_STOP_ACK to determine
whether CCLKRUN# is negated.
1
CCLKRUN# not negated because the
external CardBus device will not allow it.
D02
R
CCLK_STOP_ACK
0
Response to request to negate CardBus
CCLKRUN# using CCLKRUN# protocol
0
CCLKRUN# not negated yet. Check
CCLK_STOP_NACK to determine
whether CCLKRUN# is not negated
because the external CardBus device will
not allow it.
1
CCLKRUN# successfully negated
D01
R
CCD2
0
Current state of CCD2 pin.
D00
R
CCD1
0
Current state of CCD1 pin.
Bits
Access
Mnemonic
Reset
Description
Table 279: CardBus Miscellaneous Support register
Reserved
PWR_
CHG
CSTS
CHG_
CHG
13
12
11
10
9
8
7
6
5
4
3
2
1
0
15
14
31
29
28
27
26
25
24
23
22
21
20
19
18
17
16
30
Reserved
CCD2_
CHG
CCD1_
CHG