參數(shù)資料
型號(hào)： PCI1620PDV
英文描述： Controller Miscellaneous - Datasheet Reference
中文描述： 控制器雜項(xiàng)-數(shù)據(jù)表參考
文件頁數(shù)： 49/164頁
文件大?。?/td> 720K
代理商： PCI1620PDV
3
–
7
requirements and interface type (16-bit vs. CardBus) are determined. The scheme uses the CD1, CD2, VS1, and VS2
signals (CCD1, CCD2, CVS1, CVS2 for CardBus). A PC Card designer connects these four terminals in a certain
configuration to indicate the type of card and its supply voltage requirements. The encoding scheme for this, defined
in the
PC Card Standard
, is shown in Table 3
–
2.
Table 3
–
2. PC Card
—
Card Detect and Voltage Sense Connections
CD2//CCD2
CD1//CCD1
VS2//CVS2
VS1//CVS1
Key
Interface
Voltage
Ground
Ground
Open
Open
5 V
16-bit PC Card
5 V
Ground
Ground
Open
Ground
5 V
16-bit PC Card
5 V and 3.3 V
Ground
Ground
Ground
Ground
5 V
16-bit PC Card
5 V, 3.3 V, and
X.X V
Ground
Ground
Open
Ground
LV
16-bit PC Card
3.3 V
Ground
Connect to CVS1
Open
Connect to CCD1
LV
CardBus PC Card
3.3 V
Ground
Ground
Ground
Ground
LV
16-bit PC Card
3.3 V and X.X V
Connect to CVS2
Ground
Connect to CCD2
Ground
LV
CardBus PC Card
3.3 V and X.X V
Connect to CVS1
Ground
Ground
Connect to CCD2
LV
CardBus PC Card
3.3 V, X.X V, and
Y.Y V
Ground
Ground
Ground
Open
LV
16-bit PC Card
Y.Y V
Connect to CVS2
Ground
Connect to CCD2
Open
LV
CardBus PC Card
Y.Y V
Ground
Connect to CVS2
Connect to CCD1
Open
LV
CardBus PC Card
X.X V and Y.Y V
Connect to CVS1
Ground
Open
Connect to CCD2
LV
CardBus PC Card
Y.Y V
Ground
Connect to CVS1
Ground
Connect to CCD1
LV
UltraMedia
Per query
terminals
Ground
Connect to CVS2
Connect to CCD1
Ground
Reserved
PCMCIA
Proposal 0262
has defined the first (previously) reserved response to be the indication that an UltraMedia
card has been detected. Specifically, if the PCI1620 determines that the CD1 signal is connected to the VS1 signal,
and that the CD2 and VS2 signals are both connected to ground, it interprets this as the insertion of an UltraMedia
card adapter.
Once an insertion has been detected, the PCI1620 monitors the Media Card Detect (MC_CD) signal from the socket
to determine if an UltraMedia card is present in the adapter. This ensures that UltraMedia adapter cards function the
same as current adapter cards and are not detected or powered until an UltraMedia card is present.
Once MC_CD is detected low, indicating a media card is present, the PCI1620 asserts the socket query driver signal
(SQRYDRV) high and monitors the SQRY[10:1] signals to determine the UltraMedia interface type and its
corresponding voltage requirements. The query signal assignments are given in Table 3
–
3 through Table 3
–
5. An
example of a particular UltraMedia device, and the SQRY connections provided by the UltraMedia adapter and card,
is shown in Figure 3
–
4.
Table 3
–
3. Query Terminal Definition
SQRYx TERMINAL
FUNCTION
10
–
7
Reserved (connect to ground)
6
–
3
Interface implementation
2
–
1
Card voltage
Table 3
–
4. Query Terminals
–
Voltage
SQRY2
SQRY1
CARD VOLTAGE
0
0
VCC = 3.3 V, VPP/VCORE = 1.8 V
VCC = 5 V, VPP = 3.3 V
Reserved
0
1
1
0
1
1
Reserved
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