CL-PD6833-VC-A View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
'CL-PD6833-VC-A' PDF : 216 Pages View PDF
CL-PD6833
PCI-to-CardBus Host Adapter
6.3 Present State
Register Name: Present State
Memory Offset: 008h
Bit 31
Bit 30
Bit 29
Bit 28
Bit 27
Bit 26
Register Per: socket
Bit 25
Bit 24
Byte 3
Y-V Socket X-V Socket 3.3-V Socket 5-V Socket
RU a
R:0
Bit 23
RU a
R:0
Bit 22
RU a
R:1
Bit 21
RU a
R:1
Bit 20
Bit 19
Reserved
R:0000
Bit 18
Bit 17
Bit 16
Byte 2
Reserved
Bit 15
Bit 14
Bit 13
R:00000000
Bit 12
Bit 11
Bit 10
Byte 1
Reserved
Y-V Card X-V Card
R:00
Bit 7
Bit 6
RU a
R:0
Bit 5
RU a
R:0
Bit 4
Byte 0 Not a Card Interrupt
RU a
R:0
RU a
R:0
a RU indicates a read update.
CardBus PC
Card
RU a
R:0
16-Bit PC
Card
RU a
R:0
3.3-V Card
RU a
R:0
Bit 3
Power
Cycle
Complete
RU a
R:0
5-V Card
RU a
R:0
Bit 2
CCD2
RU a
R:1
Bit 9
Bad VCC
Request
RU a
R:0
Bit 1
CCD1
RU a
R:1
Bit 8
Data Lost
R
RC:0
Bit 0
CSTSCHG/
WAKEUP
RU a
R:0
The Socket Present State register reflects the present value of the socket status. Some of the bits in this
register are merely reflections of interface signals, while others are flags set to indicate a status change.
Bit 0 — CSTSCHG/WAKEUP
This bit reflects the current status of the CSTSCHG/WAKEUP pin on the CardBus interface.
Bit 1 — CCD1
This bit provides for detection of a PC Card insertion/removal/presence. It is also used by the
CL-PD6833, in conjunction with CVS1, to determine the card type (PC Card 16 vs. PC Card 32).
It is a reflection of the CCD1 pin.
Bit 2 — CCD2
This bit provides for detection of a PC Card insertion/removal/presence. It is also used by the
CL-PD6833, in conjunction with CVS2, to determine the card type (PC Card 16 vs. PC Card 32).
It is a reflection of the CCD2 pin.
Bit 3 — Power Cycle Complete
When this bit is set, it indicates that the interface is powered up. When this bit is cleared, the socket
is powered down. This bit is set to ‘0’ by PCIRST#.
Bit 4 — 16-Bit PC Card
When this bit is set, it indicates that the Card Detect state machine determined a PC Card 16 (R2)
card was inserted. This bit is cleared when another card, one that is not 16-bit, is inserted. This
bit is set to ‘0’ by PCIRST#.
78
CARDBUS REGISTERS
ADVANCE DATA BOOK v0.3
June 1998
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