cl-pd6833 Cirrus Logic, Inc., cl-pd6833 Datasheet - Page 162

• Manufacturer Part Number: cl-pd6833
• Description: Pci-to-cardbus Host Adapter
• Manufacturer: Cirrus Logic, Inc.

11.9.4
Bit 24 — CardBus Capable
Bit 25 — LOCK# Support
Bit 26 — CLKRUN# Support
Bits 30:27 — RFU (reserved for future use)
Bit 31 — Extended Definitions
162
Register Name: Device Capability Byte B
I/O Index: 37h
Memory Offset: 937h
Definitions
Extended
Bit 31
R:0
A ‘1’ in this bit indicates that the CL-PD6833 is capable of supporting PC Card 32 (CardBus) cards.
A ‘1’ indicates that the CL-PD6833 is capable of supporting operations involving the LOCK#
signal.
Note that bit 25 of the Device Implementation Byte D register must be referenced to determine
whether LOCK# is a supported signal in the system implementation.
A ‘1’ indicates that the CL-PD6833 is capable of supporting PCI Mobile Specification CLKRUN#
signalling for control of system clock turn on/turn off.
Note that the least-significant bit of the Device Implementation Byte D register must be referenced
to determine whether this feature is supported in the system implementation.
A ‘0’ indicates that there is no extended definition.
EXTENSION REGISTERS
Device Capability Byte B
Bit 30
RFU (ZV)
Bit 29
R:0
Bit 28
RFU (CB)
Bit 27
R:0
CLKRUN#
Support
ADVANCE DATA BOOK v0.3
Bit 26
R:1
PCI-to-CardBus Host Adapter
Register Compatibility Type: ext.
Support
LOCK#
Bit 25
R:1
Register Per: chip
CL-PD6833
CardBus
Capable
June 1998
Bit 24
R:1