Panasonic KX-HDV100RU / KX-HDV100RUB Service Manual ▷ View online
5
KX-HDV100RU/KX-HDV100RUB
3 Specifications
6
KX-HDV100RU/KX-HDV100RUB
4 Technical Descriptions
4.1.
Block Diagram
7
KX-HDV100RU/KX-HDV100RUB
4.2.
Circuit Operations
4.2.1.
LCD Circuit
LCD data are output from pin B9 of IC302 to LCD module.
LCD contrast is set by electronic control in LCD module.
+3.3V of the power supply voltage is pressurized about four/three times in the LCD module and used as LCD driving voltage
(approx. 10V).
The driving voltage is observed at pin 12(VLCDIN) of CN2.
LCD contrast is set by electronic control in LCD module.
+3.3V of the power supply voltage is pressurized about four/three times in the LCD module and used as LCD driving voltage
(approx. 10V).
The driving voltage is observed at pin 12(VLCDIN) of CN2.
4.2.2.
Reset Circuit
Reset Signal is output from IC301 and input into IC302-pin L12.
1
2
4
3
5
1
2
4
3
5
To Pin R1 (KEY_COL7) of IC302
To Pin D13 (RF_SDATA_IN/SD D3) of IC302
To Pin A9 (SPI2CK) of IC302
To Pin B10 (SPI2DI) of IC302
To Pin B9 (SPI2DO) of IC302
C130
C131
R116
C134
CN2
1
CS0
2
RST
3
CD
4
SCL
5
SI
6
VDD
7
VSS
8
VB0+
9
VB0-
10
VB1-
11
VB1+
12
VLCDIN
DGND
R135
DGND
3.3V
DGND
C132
C129
DGND
R142
R141
R140
R139
L106
R137
L108
L110
L111
C136
DGND
DGND
C137
To LCD
R305
DGND
C326
C327
VDD3.3V
DGND
IC301
1
VSS
2
VDD
3
CD
4
OUT
DC_POWER
PWR_RST
IC302
RSTN
L12
DGND
C328
8
KX-HDV100RU/KX-HDV100RUB
4.2.3.
Ethernet Circuit
The IC203 is used for the Ethernet interface.
It is connected from IC203 to the Ethernet port JK1 through a transformer and so is isolated.
It is connected between IC203 and the BBIC(IC302) by high-speed bus called RMII(Reduced Media Independent Interface) bus
operating with 50MHz.
It is connected from IC203 to the Ethernet port JK1 through a transformer and so is isolated.
It is connected between IC203 and the BBIC(IC302) by high-speed bus called RMII(Reduced Media Independent Interface) bus
operating with 50MHz.
4.2.4.
Analog Circuit
1. Handset call
Transmitting signal is input from handset microphone
input to IC302-pin E14,F14 A/D conversion, Gain adjustment and
echo cancel by built-in DSP of IC302.
Receiving signal input from IP Line
Receiving signal input from IP Line
Gain adjustment and D/A conversion by DSP of IC302 IC302-pinF12,G12 output
to handset speaker.
C205
DGND
C206
DGND
R273
DGND
R268
R275
R270
JK1
1
2
3
4
5
6
7
8
9
C217
C221
C224
C225
T1
1
TD+
8
RD-
6
RD+
2
TCT
3
TD-
16
TX1+
7
RCT
15
TXCT
14
TX1-
11
RX1+
10
RXCT
9
RX-
4
NC1
5
NC2
12
NC3
13
NC4
NC
1
2
3
1
2
4
3
Pin6(MDI-1) of IC203
Pin 3 (MDI+0) of IC203
Pin 4 (MDI-0) of IC203
Pin5 (MDI+1) of IC203
4
C359
C360
NC
NC
NC
NC
AGND
AGND
AGND
AGND
L305
L306
C361
D303
D304
AGND
AGND
D313
D314
HS_SPP
HS_SPM
CL_HS_SPP
CL_HS_SPM
F12
AMPOUT0
G12
AMPOUT1
H12
AMPOUT2
J12
AMPOUT3
IC302
R315
AGND
C391
C392
AGND
AGND
AGND
D309
D310
L310
L311
AGND
AGND
AGND
AGND
AGND
AGND
MICBIAS
C353
R313
C352
R312
R311
C351
C356
R316
R317
C348
R314
C381
C382
C354
C357
C355
C358
D301
D302
HS_MICP
HS_MICM
AGND
AGND
CL_HS_MICP
CL_HS_MICM
AGND
AGND
F14
DIFFIN0P
E14
DIFFIN0N
NC
NC
NC
NC
NC
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