5.1 ExCA Identification and Revision Register

This register provides host software with information on 16-bit PC Card support and 82365SL-DF compatibility. See Table 5−2 for a complete description of the register contents.

NOTE: If bit 5 (SUBSYRW) in the system control register is 1, then this register is read-only.

Bit

7

 

 

6

5

4

3

 

2

 

1

0

 

 

 

 

 

 

 

 

 

 

 

 

 

Name

 

 

 

 

 

ExCA identification and revision

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Type

R

 

 

R

RW

RW

RW

 

RW

 

RW

RW

 

 

 

 

 

 

 

 

 

 

 

 

 

Default

1

 

 

0

0

0

0

 

1

 

0

0

 

Register:

 

ExCA identification and revision

 

 

 

 

 

 

 

Offset:

 

CardBus Socket Address + 800h:

Card A ExCA Offset 00h

 

 

 

 

 

 

 

 

 

Card B ExCA Offset 40h

 

 

 

Type:

 

Read/Write, Read-only

 

 

 

 

 

 

 

 

Default:

 

84h

 

 

 

 

 

 

 

 

 

 

 

 

Table 5−2. ExCA Identification and Revision Register Description

 

 

 

 

 

 

 

 

 

 

 

 

 

BIT

SIGNAL

TYPE

 

 

 

FUNCTION

 

 

 

 

 

 

 

 

 

 

 

 

 

Interface type. These bits, which are hardwired as 10b, identify the 16-bit PC Card support provided by the

7−6 ‡

IFTYPE

 

R

PCI7x21/PCI7x11 controller. The PCI7x21/PCI7x11 controller supports both I/O and memory 16-bit PC

 

 

 

 

Cards.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5−4 ‡

RSVD

 

RW

These bits can be used for 82365SL emulation.

 

 

 

 

 

 

 

 

 

 

 

 

 

82365SL-DF revision. This field stores the Intel 82365SL-DF revision supported by the PCI7x21/PCI7x11

3−0 ‡

365REV

 

RW

controller. Host software can read this field to determine compatibility to the 82365SL-DF register set. This

 

 

 

 

field defaults to 0100b upon reset. Writing 0010b to this field places the controller in the 82356SL mode.

 

 

 

 

 

 

 

 

 

 

 

 

 

These bits are cleared only by the assertion of GRST.

5−5

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Texas Instruments PCI7611, PCI7411 ExCA Identification and Revision Register, ExCA identification and revision, Iftype