Sony HCD-HPR90 Service Manual - Page 40
IC701, PCM1803DBR, IC702, NJM2871BF33-TE2, IC703, MC74VHC74DTR2
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Page 40 highlights
HCD-HPR90/HPR99XM - AMP Board - IC701 PCM1803DBR VINL 1 VINR 2 VREF1 3 VREF2 4 DELTA-SIGMA MODULATOR REFERENCE VCC 5 AGND 6 DELTA-SIGMA MODULATOR POWER SUPPLY PDWN 7 BYPAS 8 TEST 9 LRCK 10 × 1/64, × 1/128 DECIMATION FILTER WITH HIGH-PASS FILTER SERIAL INTERFACE & MODE/FORMAT CONTROL CLOCK & TIMING CONTROL 20 MODE1 19 MODE0 18 FMT1 17 FMT0 16 OSR 15 SCKI 14 VDD 13 DGND 12 DOUT 11 BCK VIN VOUT IC702 NJM2871BF33-TE2 5 4 THERMAL PROTECTION BANDGAP REFERENCE 1 2 3 IC703 MC74VHC74DTR2 14 13 12 11 10 98 VCC PR D Q CK Q CLR PR D Q CK Q CLR 123 GND 456 7 CONTROL GND NOISE BYPASS 40
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40
HCD-HPR90/HPR99XM
– AMP Board –
IC701
PCM1803DBR
DELTA-SIGMA
MODULATOR
DELTA-SIGMA
MODULATOR
VINL
1
VINR
2
VREF1
3
VREF2
4
VCC
AGND
5
6
BYPAS
8
TEST
9
LRCK
10
REFERENCE
×
1/64,
×
1/128
DECIMATION
FILTER
WITH
HIGH-PASS
FILTER
SERIAL
INTERFACE
&
MODE/FORMAT
CONTROL
MODE1
20
MODE0
19
FMT1
18
FMT0
17
OSR
16
SCKI
15
VDD
14
DGND
13
DOUT
12
BCK
11
CLOCK & TIMING CONTROL
POWER
SUPPLY
PDWN
7
IC702
NJM2871BF33-TE2
5
VIN
4
VOUT
2
GND
3
NOISE
BYPASS
1
CONTROL
BANDGAP
REFERENCE
THERMAL
PROTECTION
IC703
MC74VHC74DTR2
14
1
2
3
4
5
6
7
13
12
11
10
9
8
VCC
GND
CK
CLR
CK
CLR
Q
PR
Q
Q
PR
Q
D
D