Read Panasonic KX-NT511ARUW / KX-NT511ARUB Service Manual online
8
KX-NT511ARUW/KX-NT511ARUB
4.2.3.
Ethernet Circuit
The Layer2Switch IC (IC201) is used for the Ethernet interface.
It is connected from IC201 to the Ethernet port (JK1 and JK2) through a transformer and so is isolated.
It is connected between IC201 and the BBIC (IC101) by high-speed bus called MII (Media Independent Interface) bus operating
with 25MHz.
It is connected from IC201 to the Ethernet port (JK1 and JK2) through a transformer and so is isolated.
It is connected between IC201 and the BBIC (IC101) by high-speed bus called MII (Media Independent Interface) bus operating
with 25MHz.
4.2.4.
Analog Circuit
1. Speaker phone call
Transmitting signal is input from microphone (differential amplifier circuit)
input to IC101-L19, M19
A/D conversion, Gain adjustment and echo cancel by a built-in DSP of IC101.
Receiving signal input from IP Line
Gain adjustment and D/A conversion by DSP of IC101
output from IC101-V18, V19 output to Speaker.
E_RXDV
E_TXD[0]
E_MDIO
E_COL
E_T
X
EN
E_TXD[2]
E_T
X
D[3]
E_T
X
D[
2
]
E_RXCLK
E_T
X
ER
E_COL
E_TXER
E_MDCLK
E_TXCLK
E_RST
E_RXD[1]
E_T
X
D[0]
E_T
X
CLK
E_T
X
D[1]
E_RXD[3]
E_RXCLK
E_TXEN
E_RXD[3]
E_RXDV
E_RXD[1]
E_TXD[1]
E_CRS
E_RXD[0]
E_TXD[3]
E_RXD[0]
E_RXD[2]
E_MDCLK
E_RXD[2]
E_CRS
E_MDIO
PC_TXP
PC_TXM
PC_TXM
PC_RXP
PC_RXM
PC_RXM
WAN_TXP
WAN_TXM
WAN_RXP
WAN_RXM
WAN_TXM
WAN_RXP
WAN_RXM
PC_TXP
PC_TXM
PC_RXP
PC_RXM
WAN_TXP
WAN_TXM
WAN_RXP
WAN_RXM
PHY_INT
PHY_INT
E_R
X
D[0]
E_R
X
D[1]
E_R
X
D[
2
]
E_R
X
D[3]
E_T
X
D[0]
E_T
X
D[1]
E_T
X
D[
2
]
E_T
X
D[3]
E_R
S
T
3.3V
DGND
L2SW_3.3V
R
2
0
2
R
2
01
DGND
C207
R205
R206
DGND
DGND
DGND
R207
C208
R208
DGND
DGND
DGND
R209
C209
R210
R212
DGND
DGND
C210
R211
C
227
C
22
8
1.8V
C
22
5
C
22
4
C
2
1
6
C
2
1
7
C
2
19
C
22
0
C
2
01
DGND
R
2
03
R
2
04
C203
DGND
C204
DGND
C205
DGND
C206
DGND
D201
D202
D203
D204
D205
D206
D207
D208
E_RXD[2]
001:5C
E_TXCLK
001:5B
E_TXER
001:5C
R
2
18
E_RXD[1]
001:5C
4
5
E_MDIO
001:5B
E_TXEN
001:5C
C
2
1
2
E_RXD[0]
001:5C
R
2
1
7
R213
L203
C
2
11
NC
E_COL
001:5B
E_RXDV
001:5B
R215
R
2
3
2
E_TXD[0]
001:5B
L205
R
2
31
E_RXCLK
001:5B
RA201
1
8
E_CRS
001:5C
R
2
30
E_TXD[3]
001:5B
C
2
14
R
2
19
E_TXD[2]
001:5B
2
7
E_RST
001:5C
E_MDCLK
001:5B
L
2
04
E_RXD[3]
001:5C
C
2
13
E_TXD[1]
001:5B
3
6
2
5MOUT
001:4C
DGND
C
2
15
C
22
1
C
2
18
R
2
1
6
4.
7k
L2SW_1.8V
1.8
V
L2SW_1.8V
C
222
DGND
C
22
3
C
226
L2SW_3.3V
DGND
DGND
3
6
2
7
1
8
RA202
4
5
PHY_INT
001:4C
L206
2
3
1
4
L207
2
3
1
4
L208
2
3
1
4
L209
2
3
1
4
L202
L201
IC201
13
NC
14
X
1
15
X2
1
6
S
MT
X
EN3
1
7
S
MT
X
D33/EN_REFCLKO_3
18
S
MT
X
D3
2
19
S
MT
X
D31
2
0
S
MT
X
D30
2
1
GND1
22
V
DDIO1
2
3
S
MT
X
C3/REFCLKI_3
2
4
S
MT
X
ER3/MII_LINK_3
25
SMRXDV3
26
SMRXD33/REFCLKO_3
27
SMRXD32
28
SMRXD31
29
SMRXD30
30
SMRXC3
31
GND2
32
VDDC
33
SCOL3
34
SCRS3
35
*INTRN
36
SCL_MDC
3
7
S
D
A
_MDIO
38
S
PI
Q
39
*S
PI
S
N
40
V
DDIO
2
41
GND
4
2
V
DDCO
43
P1LED1
44
P1LED0
45
P
2
LED1
4
6
P
2
LED0
4
7
*R
S
TN
48
F
XS
D1
1
RXM1
2
RXP1
3
TXM1
4
TXP1
5
VDDA_3.3
6
ISET
7
VDDA_1.8
8
RXM2
9
RXP2
10
AGND
11
TXM2
12
TXP2
T1
1
8
6
2
3
16
7
14
11
9
15
4
10
13
5
2
1
T2
1
8
6
2
3
16
7
14
11
9
15
4
10
13
5
2
1
PC1
PC2
PC3
PC4
PC5
LAN1
LAN2
LAN3
LAN4
LAN5
TX1P
TX1M
RX1P
RX1M
PCR
TX2P
TX2M
RX2P
RX2M
LNR
C
2
0
2
C
2
5
7
C
2
58
C
2
59
C
26
0
C
26
1
C
262
C
26
3
C
26
4
DGND
C
27
3
PoE1
PoE2
R
2
43
R
2
4
2
R220
R
2
14
27
0
R
2
44
C
2
5
6
C
2
55
IC101
JK1
JK2
SPM
DGND
DGND
L304
CL-SPM
R329
C380
CL-SPP
C3
7
3
D305
DGND
C3
7
8
C3
7
4
L303
C376
D
N
G
D
D
N
G
D
C375
DGND
DGND
SPP
R330
C3
77
C3
7
DGND
D306
L301
22u
L302
G1C220MA0249
C362
R325
R320
C366
R322
C365
C363
C364
R326
R321
C370
NC
NC
R323
220
AGND
AGND
AGND
AGND
AGND AGND
AGND
AGND
AGND
MICP
MICM
R327
R328
AGND
MICBIAS
C367
C368
C3
7
1
C372
D307
D308
CL-MICP
CL-MICM
C369
R324
AGND
AGND
C383
C384
IC101
V19
V18
L19
M19
Speaker
Mic
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