Read Panasonic KX-HDV130RU / KX-HDV130RUB Service Manual online
9
KX-HDV130RU/KX-HDV130RUB
4.2.4.
Analog Circuit
1. Speaker phone call
Transmitting signal is input from microphone MIC1 (differential amplifier circuit)
input to IC302-pin D15, E15 A/D conver-
sion, 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 output from IC302-pinK15,
M14
output to Speaker.
2. 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.
From Pin K15(PAOUTP) of IC302
From Pin M14(PAOUTN) of IC302
To Pin E15(DIFFIN1P) of IC302
To Pin D15(DIFFIN1N) of IC302
D305
C378
C376
DGND
C375
DGND
DGND
SPP
C377
C379
DGND
D306
L301
L302
SPM
DGND
CL_SPM
C380
CL_SPP
L303
NC
L304
DGND
L312
L313
R325
AGND
R326
R324
R321
C370
C364
C365
R323
220
R322
AGND
C363
C366
C362
R320
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
MICBIAS
C367
C368
C371
C372
C369
D307
D308
CL-MICP
CL-MICM
MIC1
1
2
R327
R328
C320
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
C359
C360
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
NC
NC
NC
NC
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