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PCI bus arbiter
446
NS9750 Hardware Reference
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
13121110987654321015 14
31 29 28 27 26 25 24 23 22 21 20 19 18 17 1630
Reserved
CCD2_
CHG
CCD1_
CHG