CL-PD6833-QC-A View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
'CL-PD6833-QC-A' PDF : 216 Pages View PDF
CL-PD6833
PCI-to-CardBus Host Adapter
Bit 5 — CardBus PC Card
When this bit is set, it indicates that the Card Detect state machine determined a PC Card 32
(CardBus) card was inserted. This bit is cleared when another card, one that is not CardBus, is
inserted. This bit is set to ‘0’ by RST#.
NOTE: This bit and the 16-Bit PC Card bit do not indicate that a card is installed. They only indicate what kind of
card was last installed. The Card Detect bits indicate if a card is currently in the socket.
Bit 6 — Interrupt
When this bit is set to ‘1’, it indicates that the inserted card is driving its interrupt pin active. This
bit is not registered and its assertion/deassertion follows the interrupt pin from the card.
Bit 7 — Not a Card
This bit indicates that an unsupported card is installed in the socket. The CL-PD6833 does not
allow power to be applied to the socket if this bit is set. This bit is set to ‘0’ by RST#.
Bit 8 — Data Lost
This bit indicates that a card was removed while the interface was active. Data may be lost. Any
data in the CL-PD6833 data buffers is lost when this event occurs. This bit is set to ‘0’ by RST#.
This bit allows software to fail in a graceful manner, if it chooses to, when this occurs.
Bit 9 — Bad VCC Request
This bit indicates that software attempted to apply an unsupported or incorrect voltage level to a
PC Card 32 (CardBus) card. This bit is set to ‘0’ by RST#.
Bit 10 — 5-V Card
When this bit is set, the card installed requires and/or supports 5.0-V operation. This bit is set by
the state machine used to detect card voltage requirements. This bit is set to ‘0’ by RST#.
Bit 11 — 3.3-V Card
When this bit is set, the card installed requires and/or supports 3.3-V operation. This bit is set by
the state machine used to detect card voltage requirements. This bit is set to ‘0’ by RST#.
Bit 12 — X-V Card
When this bit is set, the card installed requires and/or supports X-V operation. This bit is set by the
state machine used to detect card voltage requirements. This bit is set to ‘0’ by RST#.
Bit 13 — Y-V Card
When this bit is set, the card installed requires and/or supports Y-V operation. This bit is set by the
state machine used to detect card voltage requirements. This bit is set to ‘0’ by RST#.
Bits 27:14 — Reserved
Bits 31:28 — Socket Voltage Availability
These bits indicate the VCC voltages available for the sockets in this system.
31
30
29
28
YV
XV
3.3 V
5.0 V
June 1998
ADVANCE DATA BOOK v0.3
79
CARDBUS REGISTERS
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