PCI4410A Datasheet, PDF (100/198 Pages) Texas Instruments – PC CARD AND OHCI CONTROLLER

5.1 ExCA Identification and Revision Register
The ExCA identification and revision register provides host software with information on 16-bit PC Card support and
Intel 82365SL-DF compatibility. This register is read-only or read/write, depending on the setting of bit 5
(SUBSYSRW) in the system control register (PCI offset 80h, see Section 4.29). See Table 5–2 for a complete
description of the register contents.
Bit
7
Name
Type
R
Default
1
6
5
4
3
2
1
0
ExCA identification and revision
R
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
1
0
0
Register:
Type:
Offset:
Default:
ExCA identification and revision
Read-only, Read/Write
CardBus socket address + 800h; ExCA offset 00h
84h
Table 5–2. ExCA Identification and Revision Register Description
BIT SIGNAL TYPE
FUNCTION
7–6
IFTYPE
R
Interface type. These bits, which are hardwired as 10b, identify the 16-bit PC Card support provided by the
PCI4410A device. The PCI4410A device supports both I/O and memory 16-bit PC cards.
5–4
RSVD
R/W Reserved.
Intel 82365SL-DF revision. This field stores the Intel 82365SL-DF revision supported by the PCI4410A
3–0
365REV
R/W
device. Host software can read this field to determine compatibility to the Intel 82365SL-DF register set.
Writing 0010b to this field puts the controller in 82365SL mode. This field defaults to 0100b upon PCI4410A
reset.
5–4