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5
Main chip audio part
D
C
Audio Amp
AU_AMP_SD_A
R30
R/10K/0402/1%
AU_AMP_SD
R0402
R32
C58
R/100K/0201
C/0.1uF/0201
R0201
C0201
R33
R/100K/0201
Audio_VCC_5V
R0201
AU_AMP_VOLP
R34
1
R/100K/0201
Q1
R0201
NPN_3DG3904M
SOT-23/3P/SMD/MMBT3904
1
Q2
AU_AMP_VOLN
NPN_3DG3904M
B
SOT-23/3P/SMD/MMBT3904
R38
C62
18K_1%
1nF/16V/X7R
R0201
C0201
AU_AMP_VORN
AU_AMP_VORP
A
5
4
Audio power plan
R19
J89
R/0/ohm/0402
1
2
1
2
EXUSB_5V
J88
R22
R/0/ohm/0402
1
2
R24
R/0/ohm/0402
1
2
R25
R/0/ohm/0402
1
2
Line-Out
close to IC
close to connector
BEAD2
BLM18BD252SN1
BEAD0603
AU_HP_R
1
2
AU_HPR
1
2
AU_HP_L
AU_HPL
BEAD4
BLM18BD252SN1
BEAD0603
R29
R28
C52
R/470/0201/1%
R/470/0201/1%
C/33pF/0201
R0201
R0201
C0201
U10
R31
R/1K/0402/1%
1
2
1
SD
Place close to Audio Amp
2
FAULT
J6
1
AU_HPL
+
2
C60
+
3
3
+
LINP
HEADER 3X1
R35
C/1/uF/0402
NC/1K/0402
C59
4
LINN
J85
C/1/uF/0402
5
NC
6
NC
R39 100 ohm
1
2
7
AVCC
AVCC
C66
C67
C/1uF/0402
C/0.1uF/0201
C0402
C0201
8
AGND
C69
C/1uF/0402
R40
C0402
9
15K ohm
GVDD
R41
NC/100K/0402
10
PLIM
J86
C74
11
RINN
R44
C/1/uF/0402
NC/1K/0402
J24
C75
1
12
+
RINP
2
+
3
C/1/uF/0402
+
AU_HPR
HEADER 3X1
Place close to Audio Amp
13
NC
Place together
14
NC
Audio_Amp_AD52058
4
3
Volumn key pad
KPROW0
KPROW2
TP1
TP2
DIP1/P2.54
DIP1/P2.54
Audio_VCC_5V
R20
R21
C35
R0402
R0402
C/0.1uF/0201
R/0/ohm/0402
R/0/ohm/0402
SW 2
SW 3
AVCC
VR2
SW -PUSHBUTTON
VR1
SW -PUSHBUTTON
EZJZ0V800AA
SW 4P/DIP/FLAT
EZJZ0V800AA
SW 4P/DIP/FLAT
C38
VR0402
2
4
VR0402
2
4
C/0.1uF/0201
1
3
1
3
PVCCR
C41
C/0.1uF/0201
Silkscreen TOP
Silkscreen TOP
"Vol+"
"Vol-"
PVCCL
C43
C/0.1uF/0201
J8
BEAD3
1
HP_R
GND
1
2
BLM18BD252SN1
3
HPR1
BEAD0603
5
HPL1
6
HPL2
BEAD5
1
2
BLM18BD252SN1
HP_L
4
HPR2
BEAD0603
2
MIC
3.5mm earphone/EJ78-S-PF
VR3
VR4
AUDIOJACK/4P/SMD/EJ78-S-PF/ROKI
EZJZ0V800AA
EZJZ0V800AA
VR0402
VR0402
Audio jack
C53
for external
C/33pF/0201
C0201
active speaker
28
PVCCL
PVCCL
C56
C57
C/0.1uF/0201
C/10uF/0402
27
PVCCL
C61 C/0.22uF/0201
26
BSPL
C0201
B1047AS-220M=P3
25
AU_SPKL_P0
L2
AU_SPKL_P1
AU_SPKL_P1
OUTPL
L/IND/SMD/DS75LC
PAD/1P/SMD/1X2.5
C63
C/1uF/0402
J10
C0402
24
PGND
C64
C/1uF/0402
B1047AS-220M=P3
23
AU_SPKL_N0
C0402
AU_SPKL_N1
L3
AU_SPKL_N1
OUTNL
L/IND/SMD/DS75LC
PAD/1P/SMD/1X2.5
C65 C/0.22uF/0201
22
BSNL
C0201
C68 C/0.22uF/0201
21
BSNR
C0201
B1047AS-220M=P3
20
AU_SPKR_N0
L4
AU_SPKR_N1
AU_SPKR_N1
OUTNR
L/IND/SMD/DS75LC
PAD/1P/SMD/1X2.5
C72
C/1uF/0402
J11
C0402
19
PGND
C73
C/1uF/0402
B1047AS-220M=P3
18
AU_SPKR_P0
C0402
AU_SPKR_P1
L5
AU_SPKR_P1
OUTPR
L/IND/SMD/DS75LC
PAD/1P/SMD/1X2.5
C76
17
BSPR
C/0.22uF/0201
C0201
16
PVCCR
PVCCR
C77
C78
C/0.1uF/0201
C/10uF/0402
15
PVCCR
3
2
Level shift circuit
IC_VCCIO
USB_3V3
U11
C71
C70
C0201
1
8
C0201
VL
VCC
C/0.1uF/0201
C/0.1uF/0201
2
7
AU_AMP_MUTE
IOVL1
IOVC1
3
6
IOVL2
IOVC2
4
5
GND
EN
NLSX4373
UDFN8/SMD/P0.4/NLSX3373
R42
0/NC
R45
R/0/ohm/0402
Microphone (A-mic)
C44
C45
C/0.1uF/0201
C/1uF/0402
C0201
C0402
R26
R/0/ohm/0402
MIC_MICBIAS0
R0402
AU0_VIN0_P
C46
C/2.2uF/0402
C0402
U8
D5
C47
J7
SPU0410LR5H-1
AU0521M1/NC
C/15pF/0201
DIODE/SMD/AU0521M1
C0201
AU0_VIN0_N
C48
C/2.2uF/0402
C0402
Connecting the GNDs together and then to main GND through signle via
C50
C49
C/0.1uF/0201
C/1uF/0402
C0201
C0402
R27
R/0/ohm/0402
MIC_MICBIAS0
R0402
AU0_VIN1_P
C51
C/2.2uF/0402
C0402
U9
D6
C54
J9
SPU0410LR5H-1
AU0521M1/NC
C/15pF/0201
DIODE/SMD/AU0521M1
C0201
AU0_VIN1_N
C55
C/2.2uF/0402
C0402
AEC external loop back circuit
C490
R728
C491
C/10nF/0201/16V/10%
R/4.7K/0402/5%
C/3.3pF/0201
C0201
R0402
C0201
AU_SPKL_P1
C492
C/1uF/0402
R724
2K_1%
R726
30K_1%
C493 C/1uF/0402
C0402
R0402
R0402
C0402
C494
C/100pF/50V/10%
C0201
AU_SPKL_N1
C495
C/1uF/0402
R725
2K_1%
R727
30K_1%
C496 C/1uF/0402
C0402
R0402
R0402
C0402
C497
R729
C498
C/10nF/0201/16V/10%
R/4.7K/0402/5%
C/3.3pF/0201
C0201
R0402
C0201
2
1
AU_AMP_SD
D
AU0_VIN0_P
C
AU0_VIN0_N
AU0_VIN1_P
AU0_VIN1_N
B
AU1_VIN0_P
AU1_VIN0_P
AU1_VIN0_N
AU1_VIN0_N
A
5F No.5 Tai-Yuan 1st St.
5F No.5 Tai-Yuan 1st St.
5F No.5 Tai-Yuan 1st St.
MediaTek Inc.
MediaTek Inc.
MediaTek Inc.
Chupei City, Hsinchu County 30265, Taiwan, R.O.C.
Chupei City, Hsinchu County 30265, Taiwan, R.O.C.
Chupei City, Hsinchu County 30265, Taiwan, R.O.C.
Title
Title
Title
MT7933_BGA_RFB
MT7933_BGA_RFB
MT7933_BGA_RFB
Size
Size
Size
Document Number
Document Number
Document Number
Drawn
Drawn
Drawn
Rev
Rev
Rev
05-Audio
05-Audio
05-Audio
2.2
2.2
2.2
<Size>
<Size>
<Size>
Date:
Date:
Date:
Wednesday, February 09, 2022
Wednesday, February 09, 2022
Wednesday, February 09, 2022
Sheet
Sheet
Sheet
6
6
6
of
of
of
7
7
7
1
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