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AS3977 датащи(PDF) 30 Page - ams AG

номер детали AS3977
подробное описание детали  Multi-Channel Narrowband FSK Transmitter
PDF  47 Pages
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производитель  AMSCO [ams AG]
домашняя страница  http://www.ams.com
Logo AMSCO - ams AG

AS3977 датащи(HTML) 30 Page - ams AG

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www.austriamicrosystems.com/AS3977
Revision 3.6
30 - 47
AS3977
Data Sheet - A p p l i c a t i o n I n f o r m a t i o n
A<4:3>
ARSDRS
<1:0>
11
Automatic range select division ratio setting
0 (00): fREF/64
1 (01): fREF/128
2 (10): fREF/256
3 (11): fREF/512
A<7:5>
DIVR
<2:0>
010
Reference divider division ratio setting must be set to
Binary 010
A<8>
CPSEC
0
Charge pump sections setting
0: One section active
1: Two sections active
A<10:9>
CPCS
<1:0>
application dependent
Charge pump current setting
0 (00): 12.5 µA/Section
1 (01): 25.0 µA/Section
2 (10): 37.5 µA/Section
3 (11): 50.0 µA/Section
A<11:15>
00000
reserved Bits: set to Binary 00000 for normal mode of
operation
B<0>
0
0: normal mode of operation
1: reserved for test purposes only
B<1>
SD3
1
ΣΔ order selection
0: MASH2
1: MASH3
B<2>
0
0: reserved Bit; set to zero
B<3>
PN9INT
0
0: normal mode
1: reserved for test purposes only
B<4>
0
0: normal mode
1: reserved for test purposes only
B<15:5>
FRAC1
<15:0>
application dependent
Synthesizer fractional setting 1
C<4:0>
C<14:5>
INT1<9:0>
application dependent
Synthesizer integer setting 1
C<15>
PLLON
1
0: Phase locked loop off
1: Phase locked loop on
D<15:0>
FRAC2
<15:0>
application dependent
Synthesizer fractional setting 2
E<9:0>
INT2<9:0>
application dependent
Synthesizer integer setting 2
E<15:10>
FRAC3
<15:0>
application dependent
Synthesizer fractional setting 3
F<9:0>
F<15:10>
INT3<9:0>
application dependent
Synthesizer integer setting 3
G<3:0>
G<15:4>
FRAC4
<15:0>
application dependent
Synthesizer fractional setting 4
H<3:0>
H<13:4>
INT4<9:0>
application dependent
Synthesizer integer setting 4
H<15:14>
00
reserved Bits: set to Binary 00 for normal mode of
operation
Table 23. Configuration Registers Description
Register
Name
Default Value
Description



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