參數(shù)資料
型號(hào)： TSB82AA2I
廠商： Texas Instruments, Inc.
英文描述： 1394b OHCI-LYNX CONTROLLER
中文描述： 的1394b OHCI的山貓控制器
文件頁數(shù)： 31/104頁
文件大?。?/td> 461K
代理商： TSB82AA2I
311
3.12 CardBus CIS Pointer Register
The TSB82AA2 device may be configured to support CardBus registers via bit 6 (CARDBUS) in the PCI
miscellaneous configuration register at offset F0h in the PCI configuration space (see Section 3.23,
Miscellaneous
Configuration Register
). If CARDBUS is low (default), then this register is read-only returning 0s when read. If
CARDBUS is high, then this register contains the pointer to the CardBus card information structure (CIS). See
Table 311 for a complete description of the register contents.
Bit
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Name
CardBus CIS pointer
Type
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Default
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Name
CardBus CIS pointer
Type
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Default
0
0
0
0
0
0
0
0
0
0
0
0
0
X
X
X
Register:
Type:
Offset:
Default:
CardBus CIS pointer
Read-only
28h
0000 000Xh
Table 311. CardBus CIS Pointer Register Description
BIT
FIELD NAME
TYPE
DESCRIPTION
3128
ROM_IMAGE
R
Since the CIS is not implemented as a ROM image, this field returns 0s when read.
273
CIS_OFFSET
R
This field indicates the offset into the CIS address space where the CIS begins, and bits 73 are loaded
from the serial EEPROM field CIS_Offset (73). This implementation allows the TSB82AA2 device to
produce serial EEPROM addresses equal to the lower PCI address byte to acquire data from the serial
EEPROM.
20
CIS_INDICATOR
R
This field indicates the address space where the CIS resides and returns 011b if bit 6 (CARDBUS) in
the PCI miscellaneous configuration register is high, then 011b indicates that CardBus CIS base
address register at offset 18h in the PCI configuration header contains the CIS base address. If
CARDBUS is low, then this field returns 000b when read.
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