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Электронный компонент: AK2347

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ASAHI KASEI [AK2347]
MS0375-J-00 2005/01
- 1 -
AK2347
LSI

(3.388kHz, 3.290kHz)
CTCSSLPF
(3.6864MHz, 3.579545MHz)
2.7V3.3V
-40+85
CMOS
24VSOP
AK2347
CTCSSLPFIC
HPF250HzCTCSS


2.55kHz3.0kHz



CPU
(Top view)
AGNDIN
AGND
TXINO
TXIN
EXTIN
EXTINO
LIMLV
MOD
VSS
SDATA
SCLK
CSN
11
12
1
2
3
4
5
6
7
8
9
10
RXIN
RXINO
FILTERO
RXOUT
DINO
DIN
RSAOUT
TSAOUT
VDD
XOUT
XIN
TEST
24
23
22
21
20
19
18
17
16
15
14
13
ASAHI KASEI [AK2347]
MS0375-J-00 2005/01
- 2 -

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AC .....................................................................
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ASAHI KASEI [AK2347]
MS0375-J-00 2005/01
- 3 -
































OSC
XIN
XOUT
EX
T
I
N
O
+
VDD
VS
S
RXOUT
TX/RX
_HPF
Scrambler/
Descrambler
fc = 300Hz
Com-
pressor
Pre-
Emphasis
VR4
VR3
RXLPF
Expan-
der
MOD
De-
Emphasis
FILTERO
VR2
Splatter
SMF
-
+
RXA1
VR1
(HPF)
-
+
TXA1
TXIN
TXINO
RXIN
RXINO
fc = 2.55kHz
/3.0kHz
-6 to +4.5/1.5dB
-4 to +3.5/0.5dB
-9.6 to +3.0
/0.2dB
-18,-4.5 to +4.5
/0.25dB
Adder
SMF
3.6864MHz
/ 3.579545MHz
DIN
DINO
-
+
DTA1
EX
T
I
N
-
+
TXA2
AGND
+
+
A
G
NDI
N
A
G
ND
TS
AO
U
T
Sub-Audio
Programmable
LPF
VR5
RS
AOUT
-6 to +6/ 0.5dB
Power ON
at Mode 1,2,3,4
Power ON
at Mode 2,4
Power ON
at Mode 3,4
Power ON
at Mode 2,3,4
3
4
23
24
22
20
19
17 18
Control
Register
SD
A
T
A
SCLK
CS
N
TE
S
T
10
11
12
13
16 9
1
2
15
14
21
8
LIM
L
V
7
TC
EM
TXRX
PCONT
HPF
TXSW2,1
RXSW
EM
TC
TXRX
SASW
SASW
FILSW2,1
6
5
Limiter
LMT
ASAHI KASEI [AK2347]
MS0375-J-00 2005/01
- 4 -
TXA1
SCF
30dB
10kHz
VR1
(HPF)

VR12
10
-6.0+4.5 1.5dB/step
Compressor
dB1/2
:-10dBx
TC
ON/OFF
Pre-emphasis S/N
TX/RX_HPF
250HzHigh-pass
HPF
ON/OFF
Scrambler/
Descrambler

3.388kHz3.290kHz
EM,PCONT
TXA2

0dB10kHz
Adder
TXSW2, 1
Limiter
LIMLV
DC
LMT
ON/OFF
VR2
MOD
VR25
20
-3.2+3.0 0.2dB/step -6.4/0dB
Splatter
MSK3kHz
Low-pass
SPL
SMF
SCFSmoothing
RXA1
SCF
20dB
40kHz
VR3

VR33
30
-4.0+3.5 0.5dB/step
RXLPF 3kHzLow-pass
De-emphasis Pre-emphasis
Expander
CompressordB2
-10dBx
TC
ON/OFF
VR4

VR45
40
-18.0,-4.5+4.5 0.25dB/step
DTA1
Sub-Audio LPF
0dB
10kHz
Sub-Audio
Programmable LPF
DTA1Low-pass
RXA1
SASW
SA5
SA0
ASAHI KASEI [AK2347]
MS0375-J-00 2005/01
- 5 -
VR5
Sub-Audio LPF
VR54
50
-6.0+6.0 0.5dB/step
AGND (1/2VDD)
OSC
3.6864MHz3.579545MHz
MCKSL
Control
Register
1+
IC
RSTN



1
AGNDIN
AI

2
AGND
AO

3
TXINO
AO
Z
TXA1
4
TXIN
AI Z

TXA1
5
EXTIN
AI Z

TXA2

6
EXTINO
AO
TXA2
7
LIMLV
AI

DC

8
MOD
AO
Z
9
VSS
PWR -

0V
10
SDATA
DB Z