參數(shù)資料
型號(hào)： PCI1510GVF
廠商： Texas Instruments, Inc.
英文描述： PC CARD CONTROLLERS
中文描述： PC卡控制器
文件頁數(shù)： 52/128頁
文件大?。?/td> 735K
代理商： PCI1510GVF
314
Table 37 summarizes the sources of PC Card interrupts and the type of card associated with them. CSC and
functional interrupt sources are dependent on the type of card inserted in the PC Card socket. The three types of cards
that can be inserted into any PC Card socket are:
16-bit memory card
16-bit I/O card
CardBus cards
Table 37. Interrupt Mask and Flag Registers
CARD TYPE
EVENT
MASK
FLAG
16-bit memory
Battery conditions (BVD1, BVD2)
ExCA offset 05h/45h/805h bits 1 and 0
ExCA offset 04h/44h/804h bits 1 and 0
Wait states (READY)
ExCA offset 05h/45h/805h bit 2
ExCA offset 04h/44h/804h bit 2
16-bit I/O
Change in card status (STSCHG)
ExCA offset 05h/45h/805h bit 0
ExCA offset 04h/44h/804h bit 0
Interrupt request (IREQ)
Always enabled
PCI configuration offset 91h bit 0
All 16-bit PC
Cards
Power cycle complete
ExCA offset 05h/45h/805h bit 3
ExCA offset 04h/44h/804h bit 3
Change in card status (CSTSCHG)
Socket mask bit 0
Socket event bit 0
CardBus
Interrupt request (CINT)
Always enabled
PCI configuration offset 91h bit 0
Power cycle complete
Card insertion or removal
Socket mask bit 3
Socket mask bits 2 and 1
Socket event bit 3
Socket event bits 2 and 1
Functional interrupt events are valid only for 16-bit I/O and CardBus cards; that is, the functional interrupts are not
valid for 16-bit memory cards. Furthermore, card insertion and removal-type CSC interrupts are independent of the
card type.
Table 38. PC Card Interrupt Events and Description
CARD TYPE
EVENT
TYPE
SIGNAL
DESCRIPTION
Battery conditions
(BVD1, BVD2)
CSC
BVD1(STSCHG)//CSTSCHG
A transition on BVD1 indicates a change in the
PC Card battery conditions.
16-bit
memory
BVD2(SPKR)//CAUDIO
A transition on BVD2 indicates a change in the
PC Card battery conditions.
Wait states
(READY)
CSC
READY(IREQ)//CINT
A transition on READY indicates a change in the
ability of the memory PC Card to accept or provide
data.
16-bit I/O
Change in card
status (STSCHG)
CSC
BVD1(STSCHG)//CSTSCHG
The assertion of STSCHG indicates a status change
on the PC Card.
Interrupt request
(IREQ)
Functional
READY(IREQ)//CINT
The assertion of IREQ indicates an interrupt request
from the PC Card.
CardBus
Change in card
status (CSTSCHG)
CSC
BVD1(STSCHG)//CSTSCHG
The assertion of CSTSCHG indicates a status
change on the PC Card.
Interrupt request
(CINT)
Functional
READY(IREQ)//CINT
The assertion of CINT indicates an interrupt request
from the PC Card.
All PC Cards
Card insertion
or removal
CSC
CD1//CCD1,
CD2//CCD2
A transition on either CD1//CCD1 or CD2//CCD2
indicates an insertion or removal of a 16-bit or
CardBus PC Card.
Power cycle
complete
CSC
N/A
An interrupt is generated when a PC Card power-up
cycle has completed.
The naming convention for PC Card signals describes the function for 16-bit memory, I/O cards, and CardBus. For
example, READY(IREQ)//CINT includes READY for 16-bit memory cards, IREQ for 16-bit I/O cards, and CINT for
CardBus cards. The 16-bit memory card signal name is first, with the I/O card signal name second, enclosed in
parentheses. The CardBus signal name follows after a double slash (//).
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