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Texas Instruments Dual/Single Socket CardBus and UntraMedia Controller PCI7621 User Manual

Page 143

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5−15

5.13 ExCA Memory Windows 0−4 Start-Address Low-Byte Registers

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

RW

RW

RW

RW

RW

RW

RW

RW

Default

0

0

0

0

0

0

0

0

Register:

ExCA memory window 0 start-address low-byte

Offset:

CardBus Socket Address + 810h:

Card A ExCA Offset 10h
Card B ExCA Offset 50h

Register:

ExCA memory window 1 start-address low-byte

Offset:

CardBus Socket Address + 818h:

Card A ExCA Offset 18h
Card B ExCA Offset 58h

Register:

ExCA memory window 2 start-address low-byte

Offset:

CardBus Socket Address + 820h:

Card A ExCA Offset 20h
Card B ExCA Offset 60h

Register:

ExCA memory window 3 start-address low-byte

Offset:

CardBus Socket Address + 828h:

Card A ExCA Offset 28h
Card B ExCA Offset 68h

Register:

ExCA memory window 4 start-address low-byte

Offset:

CardBus Socket Address + 830h:

Card A ExCA Offset 30h
Card B ExCA Offset 70h

Type:

Read/Write

Default: 00h