Main Board Assy (15/15) : Mcu/Switch (Sheet No.16) - Pioneer BDP-LX55 Service Manual

1

10.15 MAIN BOARD ASSY (15/15) : MCU/SWITCH (Sheet No.16)

A
Main Board Circuit Diagram:MCU&Switch
CEC_1
5 CEC_1
C485 C485
10P/50V/NPO 10P/50V/NPO
B
14 CEC_2
HDMI_SWITCH
PCM/DSD SWITCH 1
C
F25
7 SPDIF2
14 SPDIF_IN/DL2
E25
7 AO2SDATA3_S
G27
7
AO2SDATA4_S
14
SD3/DR2
PCM/DSD SWITCH 2
FOR DA/C
E10 AOSDATA3
5 AOSDATA3/DSDR1
D
5 AOLRCK
B12 AOLRCK
E
FOR HDMI_TX SIL9136
SII9136 PINPCM
SCK
MCLK
WS/DR0
SD0/DL0
SD1/DR1
SD2/DL1
SD3/DR2
SPDIF_IN/DL2
DR3
DL3
F
A
15/15
72
1
2
HDMI-CEC-switch
7 HDMI-CEC-switch
C487 C487 C486 C486
U31 U31
1 6
NO IN
2 5
GND V+
CEC_2 3 4 CEC_M
NC COM CEC_M 5
C483 C483
TS5A3157 TS5A3157
FOR HDMI_TX SIL9136
INPUT
OES en_ OUTPUT
L H A--B2 DSD
L L A--B1 PCM
H X DISCONNECT/ no use
U13 SN74CBT3257 U13 SN74CBT3257
en_ 1 16
S VCC
SPDIF2 R360 100OHM 2 15
1B1 OE
AO2SDATA1 3 14
1B2 4B1
4 13
1A 4B2
AO2SDATA3_S 5 12
2B1 4A
6 11
AO2SDATA4_S
2B2 3B1
7 10
2A 3B2
8 9
GND 3A
AKM4480
U32 U32
1 6
AOSDATA3/DSDR1 en_
NO IN
2 5
GND V+
AOLRCK 3 4 LRCK
LRCK 8
NC COM
TS5A3157 TS5A3157
DSD/PCM-switch R331 R331
DSD/PCM-switch
6
AE6 GPIO5
MT8555DSD
AO2BCLK J28
AO2MCLK J26
AO2LRCLK H24
AO2SDATA0 F24
AO2SDATA1 E26
AO2SDATA2 F26
AO2SDATA3 E25
SPDIF2 F25
NA
NA
2
3
D21 D21
LL4148 LL4148
VCC
C386 C386
0.1uF/25V 0.1uF/25V
debug the software
of External MCU
FFC jack
6 OUT/IN
H 4--1 CEC1
L 4--3 CEC2 (siI9136)
VCC_D
FB3033-KLN221-NTX
CE68 CE68
+ +
C375 C375
10uF/16V/NC 10uF/16V/NC
33P/50V 33P/50V
AO2SDATA1
E26
AO2SDATA1 7
AO2SDATA5_S
G28
AO2SDATA5_S 7
SD1/DR1 14
AO2LRCLK_S H24
AO2LRCLK_S
7
AO2SDATA3_S
14
WS/DR0
FB27 FB27
FB500/0.2A FB500/0.2A
VCC_D
+ +
C385 C385 CE70 CE70
0.1uF/25V 0.1uF/25V 10uF/16V 10uF/16V
6S en_
H 4--1 DSD
R329 R329
4.7K 4.7K L 4--3 PCM
Q7 Q7
1K 1K
MT8555
DSD CLK J28
DSD MCLK J26
AO2SDATA3 E25
AO2SDATA0 F24
AO2SDATA5 G28
AO2SDATA2 F26
AO2SDATA4 G27
AO2SDATA1 E26
NA
NA
BDP-LX55
3
4
connect to QDEO2750 and HDMI TX9136
R333 R333
14 13 MCU_SDA
R332 R332
14 13 MCU_SCL
14 9136_HDMI_INT
3.3VU
R350 R350 R358 R358 R352 R352
8
1K 1K NC/1K NC/1K 1K 1K
8
7 TOOL1
7
6
6
5
FLMD0
5
4 3.3V
4
3 TOOL0
3
2
2
1
1
XP15
8PIN/1.0mm
7
MCU_RESET
J27 MT8555
3.3V
FB24 FB24
FB10/2A ELN100 FB10/2A ELN100 3.3VU
C395 C395 C396 C396
VCC_D
R319 R319 R306 R306
4.7K/1% 4.7K/1% 3.3K 3.3K
R310 R310
100 100
R325 R325 Q8 Q8
2.7K 2.7K
NPN_3DG3904M NPN_3DG3904M
VCC R/R to Q3.b
5.000V 0.772V
4.532V 0.700V
3.885V 0.600V
3.237V 0.500V
4
3.3VU
R335 R335 R336
4.7K 4.7K 4.7K
0R 0R
0R 0R
9136_HDMI_INT
R351 R351
10K 10K
R353 R353 100 100
C394 C394
R359 100R
RESET
C376 NC/22pF/50V/NP0
Y301 Y301 R1
NC/20MHz/20PPM NC
C377 NC/22pF/50V/NP0
C383 C383
1uF/25V 1uF/25V
3.3VU
RESET
3.3VU
CI RCU
1
B
R326 2N
R314 R314
NC/33K
20K 20K
Q9 Q9 R19 R19
NC/10 NC/10
NPN_3DG3904M NPN_3DG3904M
cl