FX949 データシートの表示（PDF） - CML Microsystems Plc
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FX949 Datasheet PDF : 25 Pages
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CDPD Wireless Modem Data Pump
FX949
Package Package
L4
L6
Signal
Pin No. Pin No.
Name
Type
33
37
CSN
I/P
34
38
WRN
I/P
35
39
RDN
I/P
38
41
A6
I/P
39
42
A5
I/P
43
1
A4
I/P
44
2
A3
I/P
45
3
A2
I/P
46
4
A1
I/P
47
5
A0
I/P
Description
Chip Select. An active low logic level input to the
modem, used to enable a data read or write
operation.
Write. An active low logic level input used to
control the writing of data into the modem from
the controlling µP.
Read. An active low logic level input used to
control the reading of data from the modem into
the controlling µP.
)
)
)
) 7 logic level modem register address select
) inputs.
)
)
1, 6,
11, 19,
24, 30,
36, 37,
40, 41,
42, 48
21, 22,
23, 25,
28, 29,
31
6, 7,
16, 28,
30, 40,
43, 44
25, 26,
27, 29,
33, 34,
35
)
)
) No internal connection: leave open circuit.
)
)
)
)
) Internally connected: leave open circuit.
)
)
Notes:
I/P = Input
O/P = Output
BI = Bidirectional
© 1996 Consumer Microcircuits Limited
5
D/949/5
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