PCI1420 Datasheet, PDF (107/137 Pages) Texas Instruments – PC Card Controllers

5.13 ExCA Memory Windows 0–4 Start-Address Low-Byte Registers (Index 10h, 18h,
20h, 28h, 30h)
These registers contain the low byte of the 16-bit memory window start address for memory windows 0, 1, 2, 3, and
4. The 8 bits of these registers correspond to bits A19–A12 of the start address.
Bit
7
6
5
4
3
2
1
0
Name
ExCA memory windows 0–4 start-address low byte
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Default
0
0
0
0
0
0
0
0
Register:
Offset:
Register:
Offset:
Register:
Offset:
Register:
Offset:
Register:
Offset:
Type:
Default:
Size:
ExCA memory window 0 start-address low byte
CardBus socket address + 810h; Card A ExCA offset 10h
Card B ExCA offset 50h
ExCA memory window 1 start-address low byte
CardBus socket address + 818h; Card A ExCA offset 18h
Card B ExCA offset 58h
ExCA memory window 2 start-address low byte
CardBus socket address + 820h; Card A ExCA offset 20h
Card B ExCA offset 60h
ExCA memory window 3 start-address low byte
CardBus socket address + 828h; Card A ExCA offset 28h
Card B ExCA offset 68h
ExCA memory window 4 start-address low byte
CardBus socket address + 830h; Card A ExCA offset 30h
Card B ExCA offset 70h
Read/Write
00h
One byte
5–15