參數(shù)資料
型號： PCI1520-EP
英文描述： Military Enhanced Plastic PC Card Controllers Data Manual
中文描述： 軍事增強塑料PC卡控制器數(shù)據(jù)手冊
文件頁數(shù)： 113/125頁
文件大?。?/td> 716K
代理商： PCI1520-EP
6
–
2
6.1
Socket Event Register
The socket event register indicates a change in socket status has occurred. These bits do not indicate what the
change is, only that one has occurred. Software must read the socket present-state register (CB offset 08h, see
Section 6.3) for current status. Each bit in this register can be cleared by writing a 1 to that bit. The bits in this register
can be set to a 1 by software by writing a 1 to the corresponding bit in the socket force event register (CB offset 0Ch,
see Section 6.4). All bits in this register are cleared by PCI reset. They can be immediately set again, if, when coming
out of PC Card reset, the bridge finds the status unchanged (that is, CSTSCHG reasserted or card detect is still true).
Software must clear this register before enabling interrupts. If it is not cleared when interrupts are enabled, then an
interrupt is generated (but not masked) based on any bit set. See Table 6
–
2 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
Socket event
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
Socket event
Type
R
R
R
R
R
R
R
R
R
R
R
R
R/C
R/C
R/C
R/C
Default
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Register:
Offset:
Type:
Default:
Socket event
CardBus socket address + 00h
Read-only, Read/Write, Read/Clear
0000 0000h
Table 6
–
2. Socket Event Register Description
BIT
SIGNAL
TYPE
FUNCTION
31
–
4
RSVD
R
Reserved. Bits 31
–
4 return 0s when read.
3
PWREVENT
R/C
Power cycle. Bit 3 is set when the PCI1520 detects that bit 3 (PWRCYCLE) in the socket present-state
register (CB offset 08h, see Section 6.3) has changed state. This bit is cleared by writing a 1.
2
CD2EVENT
R/C
CCD2. Bit 2 is set when the PCI1520 detects that bit 2 (CDETECT2) in the socket present-state register
(CB offset 08h, see Section 6.3) has changed state. This bit is cleared by writing a 1.
1
CD1EVENT
R/C
CCD1. Bit 1 is set when the PCI1520 detects that bit 1 (CDETECT1) in the socket present-state register
(CB offset 08h, see Section 6.3) has changed state. This bit is cleared by writing a 1.
0
CSTSEVENT
R/C
CSTSCHG. Bit 0 is set when bit 0 (CARDSTS) in the socket present-state register (CB offset 08h, see
Section 6.3) has changed state. For CardBus cards, bit 0 is set on the rising edge of CSTSCHG. For 16-bit
PC Cards, bit 0 is set on both transitions of CSTSCHG. This bit is reset by writing a 1.
相關PDF資料
PDF描述
PCI1620GHK Controller Miscellaneous - Datasheet Reference
PCI1620PDV Controller Miscellaneous - Datasheet Reference
PCI2050A 32-Bit. 66MHz. 9-Master PCI-to-PCI Bridge
PCI2050GHK BUS CONTROLLER
PCI2050PDV BUS CONTROLLER
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