Texas Instruments Dual/Single Socket CardBus and UntraMedia Controller PCI7621 User Manual
Page 141
5−13
5.9
ExCA I/O Windows 0 and 1 Start-Address Low-Byte Registers
These registers contain the low byte of the 16-bit I/O window start address for I/O windows 0 and 1. The 8 bits of these
registers correspond to the lower 8 bits of the start address.
Bit
7
6
5
4
3
2
1
0
Name
ExCA I/O windows 0 and 1 start-address low-byte
Type
RW
RW
RW
RW
RW
RW
RW
RW
Default
0
0
0
0
0
0
0
0
Register:
ExCA I/O window 0 start-address low-byte
Offset:
CardBus Socket Address + 808h:
Card A ExCA Offset 08h
Card B ExCA Offset 48h
Register:
ExCA I/O window 1 start-address low-byte
Offset:
CardBus Socket Address + 80Ch:
Card A ExCA Offset 0Ch
Card B ExCA Offset 4Ch
Type:
Read/Write
Default: 00h
5.10 ExCA I/O Windows 0 and 1 Start-Address High-Byte Registers
These registers contain the high byte of the 16-bit I/O window start address for I/O windows 0 and 1. The 8 bits of
these registers correspond to the upper 8 bits of the start address.
Bit
7
6
5
4
3
2
1
0
Name
ExCA I/O windows 0 and 1 start-address high-byte
Type
RW
RW
RW
RW
RW
RW
RW
RW
Default
0
0
0
0
0
0
0
0
Register:
ExCA I/O window 0 start-address high-byte
Offset:
CardBus Socket Address + 809h:
Card A ExCA Offset 09h
Card B ExCA Offset 49h
Register:
ExCA I/O window 1 start-address high-byte
Offset:
CardBus Socket Address + 80Dh:
Card A ExCA Offset 0Dh
Card B ExCA Offset 4Dh
Type:
Read/Write
Default: 00h