Philips FX20 Service Manual page 40

8-12
Circuit Diagram - Main board:STA311B
A
1
2
I2S_DATA2 R226 R226 33 33
4 I2S_DATA2
LRCLK R228 R228 100 100
4,5 LRCLK
BCLK R229 R229 33 33
4,5 BCLK
I2S_DATA2
10
I2S_D2
4 DSP_RESET
3
4
A
B
DSP_MUTE R225 R225 4.7K 4.7K
4 DSP_MUTE
DVCC3 VD3.3V
FB16 FB16
500/500mA 500/500mA
C177 C177
+ +
CE24 CE24
VD3.3V
0.1uF/25V/Y5V 0.1uF/25V/Y5V 47uF/16V 47uF/16V
R222 R222 10K 10K
C182 C182
0.1uF/25V/Y5V 0.1uF/25V/Y5V
VD3.3V
R223 R223 10K 10K
C185 C185
0.1uF/25V/Y5V 0.1uF/25V/Y5V
R224 R224 NC/0 NC/0
C188 C188 C190 C190 C191 C191
VD3.3V
VD3.3V
VD3.3V
R230 R230
10K 10K
DSP_RESET R231 R231 33 33
C198 C198 C199 C199
DSP_SDA
4 DSP_SDA
DSP_SCL
4 DSP_SCL
MCLK R236 R236 33 33
4,5 MCLK
B
C D
VCC5V_D
Q14 Q14
PNP_MMBT8550CLT1 PNP_MMBT8550CLT1 D10 D10 LL4148 LL4148
R218 R218 47K 47K
CE23 CE23
+ +
100uF/16V 100uF/16V
R219 R219 4.7K 4.7K Q15 Q15
NPN_3DG3904M NPN_3DG3904M
R220 R220
47K 47K
EAPD 11
VD3.3V VD3.3V
R221 R221
1K 1K
C180 C180 C181 C181
0.1uF/25V/Y5V 0.1uF/25V/Y5V 0.1uF/25V/Y5V 0.1uF/25V/Y5V
U20 U20
1 42
MVO OUT2A
GND 2 41
TEST_MODE OUT2B
3 40 GND
VDD GND
GND 4 39
GND VDD
5 38
SDI_78 OUT3A
6 37
SDI_56 OUT3B
7 36
SDI_34 OUT4A
8 STA311B STA311B 35
SDI_12 OUT4B
9 34
LRCKI OUT5A
10 33
BICKI OUT5B
11 32 GND
VDD GND
GND 12 31
GND VDD
13 30
RESET OUT6A
14 29
PLL_BYPASS OUT6B
VD3.3V
C200 C200
0.1uF/25V/Y5V 0.1uF/25V/Y5V
VD3.3V
VD3.3V_1 FB17 FB17
0 0
C201 C201
+ +
CE25 CE25
0.1uF/25V/Y5V 0.1uF/25V/Y5V C202 C202
47uF/16V 47uF/16V
0.1uF/25V/Y5V 0.1uF/25V/Y5V
R237 R237 0 0
C203 C203 C204 C204 C205 C205
C D
8-12
E
CH1B 11
CH1A 11
11
CH2B
C183 C183 C184 C184 C264 C264
C193 C193
11
CH2A
VD3.3V
C186 C186
11
CH3B
0.1uF/25V/Y5V 0.1uF/25V/Y5V
CH3A 11
CH4B 11
CH4A 11
VD3.3V
C192 C192
0.1uF/25V/Y5V 0.1uF/25V/Y5V
C266 C266 C195 C195 C197 C197 C265 C265
E
1
2
3
4