參數(shù)資料
型號： 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)： 107/128頁
文件大?。?/td> 735K
代理商： PCI1510GVF
517
5.19 ExCA Card Detect and General Control Register
The ExCA card detect and general control register controls how the ExCA registers for the socket respond to card
removal, as well as reports the status of VS1 and VS2 at the PC Card interface. See Table 514 for a complete
description of the register contents.
Bit
7
6
5
4
3
2
1
0
Default
X
X
0
0
0
0
0
0
Register:
Offset:
Type:
Default:
ExCA card detect and general control
CardBus socket address + 816h; ExCA offset 16h
Read-only, Read/Write
XX00 0000b
Table 514. ExCA Card Detect and General Control Register Description
BIT
SIGNAL
TYPE
FUNCTION
7
VS2STAT
R
VS2 state. Bit 7 reports the current state of VS2 at the PC Card interface and, therefore, does not have
a default value.
0 = VS2 low
1 = VS2 high
6
VS1STAT
R
VS1 state. Bit 6 reports the current state of VS1 at the PC Card interface and, therefore, does not have
a default value.
0 = VS1 low
1 = VS1 high
5
SWCSC
RW
Software card detect interrupt. If bit 3 (CDEN) in the ExCA card status-change interrupt configuration
register (ExCA offset 05h/45h/805, see Section 5.6) is set, then writing a 1b to bit 5 causes a card-detect
card-status change interrupt for the associated card socket. If bit 3 (CDEN) in the ExCA card
status-change-interrupt configuration register (ExCA offset 05h/45h/805, see Section 5.6) is cleared to 0b,
then writing a 1b to bit 5 has no effect. A read operation of this bit always returns 0b.
4
CDRESUME
RW
Card detect resume enable. If bit 4 is set to 1b, then once a card detect change has been detected on CD1
and CD2 inputs, RI_OUT goes from high to low. RI_OUT remains low until bit 0 (card status change) in
the ExCA card status-change register is cleared (see Section 5.5). If this bit is a 0b, then the card detect
resume functionality is disabled.
0 = Card detect resume disabled (default)
1 = Card detect resume enabled
32
RSVD
R
Reserved. Bits 3 and 2 return 00b when read.
1
REGCONFIG
RW
Register configuration on card removal. Bit 1 controls how the ExCA registers for the socket react to a card
removal event. This bit is encoded as:
0 = No change to ExCA registers on card removal (default)
1 = Reset ExCA registers on card removal
0
RSVD
R
Reserved. Bit 0 returns 0b when read.
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