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

Page 147

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5−19

5.17 ExCA Memory Windows 0−4 Offset-Address Low-Byte Registers

These registers contain the low byte of the 16-bit memory window offset address for memory windows 0, 1, 2, 3,
and 4. The 8 bits of these registers correspond to bits A19−A12 of the offset address.

Bit

7

6

5

4

3

2

1

0

Name

ExCA memory windows 0−4 offset-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 offset-address low-byte

Offset:

CardBus Socket Address + 814h:

Card A ExCA Offset 14h
Card B ExCA Offset 54h

Register:

ExCA memory window 1 offset-address low-byte

Offset:

CardBus Socket Address + 81Ch:

Card A ExCA Offset 1Ch
Card B ExCA Offset 5Ch

Register:

ExCA memory window 2 offset-address low-byte

Offset:

CardBus Socket Address + 824h:

Card A ExCA Offset 24h
Card B ExCA Offset 64h

Register:

ExCA memory window 3 offset-address low-byte

Offset:

CardBus Socket Address + 82Ch:

Card A ExCA Offset 2Ch
Card B ExCA Offset 6Ch

Register:

ExCA memory window 4 offset-address low-byte

Offset:

CardBus Socket Address + 834h:

Card A ExCA Offset 34h
Card B ExCA Offset 74h

Type:

Read/Write

Default: 00h