Read Panasonic KX-DT321UA Service Manual online
14
KX-DT321UA/KX-DT321UA-B
HANDSET RX
SP PHONE RX
PCM RX DATA
HEADSET RX
PCM TX DATA
HANDSET TX
SP PHONE TX
HEADSET TX
Vref
C C
D E T
SCLK
SCLK
DATA
DATA
CSN
SP_CSN
C513
C511
C508
C507
L52
C510
C515
C514
AG
C405
AG
IC5
1
A0
2
A1
3
A2
4
GND
5
SDA
6
SCL
7
WP
8
VCC
DG
DG
Q52
E
C
B
C521
AG
C501
NC
Q51
E
C
B
AG
C527
C541
NC
AG
AG
AG
L53
AG
C539
C621
AG
C537
C504
C535
C609
NC
IC4
1
PLLCAP
2
AVSS
3
SPON
4
SPOP
5
DVDD
6
DVSS
7
FS
8
DX
9
BCLK
10
DR
11
DATA
12
SCLK
13
CSN
14
TEST
15
AVDD
16
MIC2
17
MIC1
18
MIC3
19
HANDT3
20
HANDT1
21
HANDT2
22
VREF
23
RAGND
24
DAOUT
25
HANDI
26
HANDR
27
RAI
28
RAO
29
SPI
30
TONE
IC2
20
OSR
21
OSX
22
OEP0
25
OCK
1
VDD1
24
VDD24
56
VDD56
7
GND7
17
GND17
46
GND46
49
GND49
2
CSN
48
OSO
47
OSI
44
VDD44
23
GND23
26
OSYNC
19
OEP1/PN9/CK512
K
IC9
1
COM
2
INH
3
GND3
4
GND4
5
A
6
Y1
7
Y0
8
VCC
AG
IC3
1
BCLK
2F
S
3
RIN
4T
IN
5
ROUT
6
TOUT
7
VDD
8
VSS
9
RXON
10
TXON
11
DATA
12
TEST2
13
SCLK
14
CSN
15
TEST1
16
RST
AG
AG
AG
DG
DG
DG
DG
DG
DG
DG
DG
DG
AG
AG
DG
CN6
NC
11
22
Q601
E
C
B
MIC3
SPP
AG2
SPN
MIC1
SP1
SP2
MIC2
JK3
HANDSET JACK
1
2
3
4
JK4
HEADSET JACK
1
2
3
4
5
C608
NC
PN9
RA1
1
2
3
4
5
6
7
8
AG
AG
C525
L51
L54
C400
C401
C402
C403
C503
C517
C534
C536
C516
C518
C520
C519
C540
AG
IC22
NC
1
2
3
4
5
6
7
8
C529
NC
C530
NC
AG
C531
NC
HD/HD_AG
HD_MIC
HD_SP
HS_MIC
HS_SP
AG
C502
C506
C538
DG
C523
AG1
C522
CN3
1
2
3
CN3
4
5
CN4
5
4
3
CN4
2
1
IC11
1
VOUT1
2
VIN1
3
Bypass
4
GND
5
SHUTDOWN
6
VIN2
7
VOUT2
8
VDD
CN1
1
2
CN2
1
2
RA4
1
2
3
4
5
6
7
8
6
7
8
AG
DG
AG
DG
AG
DG
D3.3V
C545
NC
C546
NC
C547
NC
C548
NC
C549
NC
C551
NC
C550
NC
D5V
DG
DG
C526
C552
C553
C532
C500
C533
C556
AG
C554
C555
C557
NC
AG
DG
C542
C528
C543
C544
C404
C558
NC
C559
NC
C512
C509
X1
16.384MHz
R522
R517
R506
R524
R604
R518
R605
R400
R516
R402
R514
R606
R533
NC
R504
R534
0
R510
R500
R502
R521
R520
R526
R529
R509
R530
NC
R401
R523
R513
0
R607
R511
R527
R525
R507
R406
R532
NC
R501
R512
R503
R528
R531
NC
SP
MIC
IC3
IC4
DG/AG
Analog Circuit
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