cl-pd6833 Cirrus Logic, Inc., cl-pd6833 Datasheet - Page 66

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

5.14
This is the PCI I/O space base address for the Operation registers.
Bits 1:0 — I/O Space Indicator
Bits 31:2 — Controller I/O Base Address
66
Byte 3
Byte 2
Byte 1
Byte 0
These bits always read back ‘01’, indicating that this Base Address register defines a PCI I/O
space.
This field specifies the I/O-mapped register space of the CL-PD6833. The Operation registers
can be accessed through this window only after these bits are set to a non-zero value. The
allowable range is anywhere in the I/O map. For legacy software, this register should be set to
‘000003E1h’.
PCI CONFIGURATION REGISTERS
PC Card 16-Bit IF Legacy Mode Base Address
Offset: 44h
Register Name: PC Card 16-Bit IF Legacy Mode Base Address
Bit 31
Bit 23
Bit 15
Bit 7
Bit 30
Bit 22
Bit 14
Bit 6
Controller I/O Base Address (low)
Bit 29
Bit 21
Bit 13
Bit 5
R/W:000000
Controller I/O Base Address (high mid.)
Controller I/O Base Address (low mid.)
Controller I/O Base Address (high)
Bit 28
Bit 20
Bit 12
Bit 4
R/W:00000000
R/W:00000000
R/W:00000000
Bit 27
Bit 19
Bit 11
Bit 3
ADVANCE DATA BOOK v0.3
Bit 26
Bit 18
Bit 10
Bit 2
PCI-to-CardBus Host Adapter
Bit 25
Bit 17
Bit 9
Bit 1
I/O Space Indicator
Register Per: chip
CL-PD6833
R:01
June 1998
Bit 24
Bit 16
Bit 8
Bit 0