Hitachi UT42X902/D8MW Service Manual page 75

Schematic Diagram page 21 /28
Line-in for connecting PC audio
J201
LGY6502-0800
3B
7E
003:2B
003:2D
003:5B
AUD+3.3V
004:1C
001:D4
003:2C
AUD_SDA
004:4C
001:D4
003:2C AUD_SCL
004:4C
001:D4
003:2B
AudioRSTn
004:2C
From Main-BD
001:F4 DLY_SD_S
001:F4 DLY_WS_S
001:F5 DLY_SCLK_S
Digital Audio (I2S Bus)
• Since this is a basic circuit diagram, the value of the parts is subject to be altered for improvement.
TABLE OF CONTENTS
3
GND
Zin 50kOhm
Max 2.0Vrms Max 1.05Vrms
18k-1% 1.0/16
R 3 3 R227 C201
1 2 1 2 1
18k-1% 1.0/16
L 2 2 R225 C219
1 2 1 2 1
GND 1 1
C227 C228
1000p 1000p
1005 1005
GND1 GND1
L201
BLM18BD471SN1D
2D
MAX 11mA 1608
7E
1 2
003:2B AUD+5V
7C
003:2D
‘ 003:5B 1 2
AUD+3.3V
004:1C
L202
MAX 8mA BLM18BD471SN1D
1608
12.288
Master CLK 18.432MHz
ADC_MCLK1
5D
Digital Audio Master CLK
GND
L203
I2C BUS ( GND
BLM18BD471SN1D
1608
1 2
R234 0
TYP 42mA
1 2
C212
I202
10/10
1 2 NJU26041V-01A
2125
1 VDD-1 VSS-32
C213 1 2
1 2 0.1/16
SDA/SDOUT TEST-31
2
1005
R212 100
1 2
3 SCL/SCK TEST-30
R213 100
AD1/SDIN SEL
4
R229
1 10k 2
5 AD2/SSb PROC
1 2
RESETb MUTEb
6
R233 1.0k
C210
10/10 7 VDD-7 WDC
1 2
2125
VDD-8 VDD-25
8
C211 1 2
0.1/16
9 VSS-9 VSS-24
C214 R220 1005
7.0p-C 470-1%
1 2 1 2
10 CLKOUT TEST-23
1
1005
X203 11 CLK MCK
C215
36.864MHz
7.0p-C
SMD-49
1 2 2
12 TEST-12 TEST-21
1005
TEST-13 SDO1
GND1 13
14 SDI0 SDO0
LRI LRO
15
16 BCKI BCKO
GND
GND1
4
5
I2S, 24-bit
Master mode (384Fs)
256Fs
Full scale input is 3.0Vpp R232 0
R223 1 2
2.5V Bias
100
2
R224
GND1
100
2
GND1
C216 C218
100p-C 100p-C
1005 1005
Digital Audio (I2S Bus)
GND1
R201 47
1 2
R202 47
1 2
R203 47
1 2
GND1 GND1
PC AUDIO ADC
R205
10k
GND1
32
31
30
29
28
27 C209
10/10
26 2125
Digital Audio Master CLK
1 2
GND
C208
25
1 2 0.1/16
1005
24
R217 47
1 2
23 ADC_MCLK1 3C
R218 47
1 2
22 ADC_MCLK2 003:2D
21
R207 47
1 2
DSP_SD_NF 003:2C
20
R208 47
1 2
19 DSP_SD_F 003:2C
R209 47
1 2
DSP_WS 003:2C
18
R214 47
1 2
17 DSP_SCLK 003:2C
Digital Audio (I2S Bus)
GND
AUDIO DSP
Slave Address:38h
3Ch
74
6
GND
To Main-BD
ADC_SD 001:D5
ADC_SCLK 001:D5
ADC_WS 001:D5
+5.6V
---
X205
NFM2012P13C105B
123mA 10mA
2125
+5.6V 1 3
001:D6
2
GND1
R211 C207
0 0.22/16
I203
TK11150CSC
R210
0
001:D5 1 2
POWER2TD
003:2B
C217
1.0/16
C221
0.01/25
1005
GND1 GND1
Bottom View
I204
113mA
X207 MM1663DHBE
NFM2012P13C105B
2125
1 3
8 Vin Vout 1
2
NC-7 NC-2
7 2
R216 C223
GND1 G1
0 1.0/16
6 NC-6 GND 3
R215
0
1 2
5 Cont Cn 4
C222 C224
0.01/25 0.01/25
1005 1005
GND1
7
D8MW
AUD+5V
---
240mA (TYP) PCM1808 11mA(MAX)
360mA (MAX) NJM2769B 20mA(TYP)
AUD+5V 3B
C220
1.0/16
AUD+3.3V
---
PCM1808 8mA(MAX)
NJU26040-08B 42mA(TYP)
MAX 1000mA
TAS5702 160mA(TYP)
2D
AUD+3.3V 3B
003:2B
003:2D
C225
003:5B
1.0/16
004:1C
GND1
TERMINAL BOARD SHEET: 002
Audio input
A
B
C
D
E
F