67
87654321
A
B
C
D
E
F
STBY POWERGND 3.3VPOWER -POWER +
from MCU common line with B/E reset
from MCU MCU_SCL(share with EEPROM IIC)
from MCU MCU_SDA(share with EEPROM IIC)
from MCU P1.4
from MCU P3.4
from MCU_IO_12
from MCU_P3.4
from MCU MCU_IO_15
from MCU MCU_IO_09
from MCU common line with B/E reset
from MCU MCU_IO_18
VCXO Control Connect B/E(MT8580)3.3V power supply VCXO Control
Selector Control
To Audio DAC
from MCU MCU
from MCU MCU
DIR Control
PLL Synthesizer Control
Shift Register Control
From MCU
4094 doesn't work before 8580 has power, DAC_RST1# cannot be controlled.
When power on & power off, AUDIO output can mute in the
end through MCU_MUTE controlling, Although cancel this
DAC_RST1# controlling. Is it true?
If use MCU_3.3V, it will increase the power dissipation at STANDBY mode.
R401 →NCC345 →NCC340 →NC C347 →NC
R345 →NC
Add net DIR_DO
C341 →NC
PLL_RST
DIR_RST
DIR_ERR
CFLAG
DIR_DO/Shift_CLK
GND_D
VCXO_TXD/DIR_DI
VCXO_CLK/DIR_CLK
+3.3V_D1
S_SEL
DIR_CS\
VCXO_CS
PLL1_TXD
PLL1_CLK
PLL_LD
DIR_DO/Shift_CLK
S_SEL2
SEL_OE
F_SEL
+3.3V_D1
3.3V
+3.3V_D1
PLL_RST
ShiftR_OE
PLL_RST
PLL1_CLK
PLL1_TXD
ShiftR_STROBE
DIR_ERR
CFLAG
DIR_DO/Shift_CLK
DIR_RST
VCXO_TXD/DIR_DI
VCXO_CLK/DIR_CLK
S_SEL
VCXO_CS
DIR_CS\
VCXO_CS
DAC_RST2#
VCXO_CLK/DIR_CLK
VCXO_TXD/DIR_DI
DIR_RST
DIR_ERR
CFLAG
DIR_DO/Shift_CLK
DIR_CS\
PLL1_CLK
PLL1_TXD
VCXO_OE
PLL_LD
PLL_LD
M_SEL
D_LINK_NS_XTALI
SPMCLK
LINK_NS_XTALI
BE_RESET
U38
SM8707EV-G
U38
SM8707EV-G
NC2
16
SO3
15
FSEL
14
SO2
13
VDD3
12
VSS3
11
AO1
10
SO1
9
XTO
8
XTI
7
VSS2
6
VDD2
5
MO2
4
MO1
3
VSS1
2
VDD1
1
R355 0R355 0
C428 1000pF/50V/X7RC428 1000pF/50V/X7R
C3431000pF/50V/NP0 C3431000pF/50V/NP0
C345NC/1000pF/50V/NP0 C345NC/1000pF/50V/NP0
R425 NC/10KR425 NC/10K
R344 0R344 0
U46
HEF4094BT
U46
HEF4094BT
Q1
4
Q2
5
Q3
6
Q4
7
Q5
14
Q6
13
Q7
12
Q8
11
Qs
9
Q's
10
VCC
16
STR
1
DATA
2
CLK
3
OE
15
VSS
8
R346 0R346 0
R35810K R35810K
C434 0.1uF/25V/Y5VC434 0.1uF/25V/Y5V
R427 47R427 47
C342NC C342NC
C430 0.1uF/25V/Y5VC430 0.1uF/25V/Y5V
R415
10K
R415
10K
R347 0R347 0
C433 0.01uF/25V/Y5VC433 0.01uF/25V/Y5V
R356 NC/33R356 NC/33
R357 NC/33R357 NC/33
R349 0R349 0
R393
0
R393
0
R430 10KR430 10K
C340NC/1000pF/50V/NP0 C340NC/1000pF/50V/NP0
R345 NC/0R345 NC/0
U49F
74HCU04PW
U49F
74HCU04PW
1213
C3440.1uF/16V/Y5V C3440.1uF/16V/Y5V
R350 NCR350 NC
R431 NC/0R431 NC/0
+
10uF/50V CE17
+
10uF/50V CE17
R423 0R423 0
R421 33R421 33
R401
NC/47K
R401
NC/47K
R363
NC
R363
NC
R343 0R343 0
C341NC/0.1uF/16V/Y5V C341NC/0.1uF/16V/Y5V
R420 NC/10KR420 NC/10K
R351 NC/33R351 NC/33
R354 NC/33R354 NC/33
R348 NC/33R348 NC/33
+
10uF/50V
CE20
+
10uF/50V
CE20
C347NC/1000pF/50V/NP0 C347NC/1000pF/50V/NP0
R422 0R422 0
C429 0.01uF/25V/Y5VC429 0.01uF/25V/Y5V
R424 10KR424 10K
C349NC C349NC
R428 33R428 33
C432 10uF/10V/Y5VC432 10uF/10V/Y5V
U37
74LVC157APW
U37
74LVC157APW
A/B
1
1A
2
1B
3
1Y
4
2A
5
2B
6
2Y
7
GND
8
3Y
9
3B
10
3A
11
4Y
12
4B
13
4A
14
G
15
VCC
16
FB33
160/200mA
FB33
160/200mA
R353 0R353 0
C431 0.01uF/25V/Y5VC431 0.01uF/25V/Y5V
C348NC C348NC
C346NC C346NC
FB32
160/200mA
FB32
160/200mA
R432 0R432 0
R426 0R426 0
R429 NC/10KR429 NC/10K
R352 0R352 0
SCHEMATIC DIAGRAMS (17/18)
MAIN_13
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