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首页bes_sch_v1.3.pdf
bes_sch_v1.3.pdf
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更新于2023-05-30
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苹果Ipods已经推出便引爆市场,至今供不应求。Ipods pro更是引入了主动降噪功能,性能卓越广受好评。市面上将会出现更多带有主动降噪功能的耳机。本资料是双耳无线蓝牙降噪耳机的原理图。提供了前馈和反馈两种降噪方式。供参考。
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DATE:
LTR
ECO NO:
APPROVED:
REVISION RECORD
SCALE:
SHEET: OF
DRAWING NO:
TITLE:
COMPANY:
RELEASED:
DATED:
DATED:
QUALITY CONTROL:
CHECKED:
DATED:
DATED:
DRAWN:
CODE:
SIZE:
REV:
1
1
<Scale>
<Revision>
<Drawing Number>
A2
<Code>
<Company Name>
<Release Date>
<QC Date>
<Checked Date>
<Drawn Date>
<Released By>
<QC By>
<Checked By>
<Drawn By>
<TITLE>
CHARGER MODE 1
USB CONNECT
FLASH DOWNLOAD
BAT PAD
DIFFERENTAL MIC
SINGLE MIC
MEMS MIC MODE
VOICE MEMS MIC
NOISE MEMS MIC
KEY
CHARGER MODE 2
DUAL MIC NOISE CANCEL MODE
RED LED ALWAYS ON UNTILL BAT CHARGE FINISH
RED LED CONTROL BY CHIP
1
X1
2
GND
3
X2
4
GND
Y2
CRYSTAL_3225
C10
5.6pF
C11
6.8pF
L4
4.7uH
C15
10uF
C24
1uF
C19
1uF
ANT1
BES2000-A
A1
VBAT
B1
VBAT
B2
VBAT_SENSE
C1
NC
C2
NC
D1
VMEM
D2
VCHG_R
E1
NC
F1
NC
E2
NC
F2
NC
G1
ADC0
G2
SSD_DET/GPIO_26
H1
SSD_D1/GPIO_17
H2
SSD_D0/GPIO_16
J1
SSD_CMD/GPIO_15
J2
SSD_CLK/GPIO_14
J3
SSD_D3/GPIO_21
A9
NC
A10
V_PA
B10
RF_GND
A11
BT_RF
B11
RF_GND
C10
NC
C11
NC
D11
NC
D10
RF_GND
E11
VCM_CAP
F11
LOUT_RP
G11
LOUT_RN
H11
LOUT_LP
J11
LOUT_LN
K11
MIC1_N
E10
VCODEC
F10
NC
G10
NC
H10
MIC2_P
B9
I2S_CLK/GPIO_13
B8
UART_TX/GPIO_37
B7
UART_RX/GPIO_36
B6
GPIO35
B5
GPIO34
B4
RESET
B3
POWKEY
F7
GND
F5
GND
E7
GND
E6
GND
E5
GND
A8
V_ANA
A7
V_CORE
A6
VCORE_BUCK
A5
LX2
A4
PGND
A3
VANA_BUCK
A2
LX1
J10
MIC2_N
K10
MIC1_P
J9
VMIC2
K9
VMIC1
J8
GND_XTAL
K8
XTAL_IN
K7
XTAL_OUT
J7
V_XTAL
F6
GND
J6
SSD_WP/GPIO_27
K6
SPI_CLK/GPIO_22
K5
SPI_CS/GPIO_23
J5
VIO
K4
SPI_SO/GPIO_24
J4
SSD_D2/GPIO_20
K3
SPI_D/C/GPIO_25
K2
I2C_CLK/GPIO_30
K1
I2C_DAT/GPIO_31
U2
BES2000-A
C14
1uF
R14
22K
C21
1uF
C35
1uF
C22
4.7uF
C23
1uF
C62
1uF
C1
1uF
C7
NC
1
VBUS
2
D-
3
D+
4
ID
5
GND
6
SHIELD1
7
SHIELD2
8
SHIELD3
9
SHIELD4
J1
BAT+
BAT-
RX
TX
R1
2K
C6
1uF
C8
1uF
C18
4.7uF
R2
2K
R3
2K
MIC+
MIC-
R4
2K
C13
1uF
C16
1uF
C17
4.7uF
R13
2K
MIC2+
MIC2-
R15
2K
C20
1uF
C25
1uF
C26
4.7uF
MIC3+
MIC3-
MIC_VCC
C27
33P
C28
33P
C29
1uF
C30
1uF
C31
1uF
C32
1uF
C33
NC
C34
NC
1
4
3
2
MIC2
1
4
3
2
MIC1
R11
2K
C2
4.7uF
R12
2K
C3
4.7uF
S2
VOL+
S1
S3
VOL-
R16
10k
R17
10k
L+
L-
C4
1uF
1
/CHRG
2
GND
3
BAT
5
PROG
4
VCC
MX1
MX4054
R10
13k
D1
LED_BLUE
D2
LED_RED
R6
0R
R7
100R
R8
1.5k
C9
1uF
1
/CHRG
2
GND
3
BAT
5
PROG
4
VCC
MX2
MX4054
R9
13k
D3
LED_RED
R18
100R
D5
LED_BLUE
R19
0R
1
2
E2
1
2
E3
1
2
ESD5621W
1
2
E1
1
2
E4
1
2
E5
1
2
E6
L1
1nH
L2
1nH
C5
NC
1
1
2
2
3
3
U1
BAV70
GND
GND
GND
GND
RESET
VBAT
I2C_DAT
I2C_SCL
VANA
VANA
VANA
GPIO_14
GND
VCHGER
VANA
GND
GND
PWRKEY
RESET
GND
GND
MIC1_N
GND
GND
GPIO_15
GPIO_26
I2C_SCL
I2C_DAT
VCHGER
VBAT
I2C_SCL
I2C_DAT
GND
GND
VMIC
MICP
MICN
GND
VMIC
MICP
MICN
GND
GND
GND
VMIC
MICP
MICN
GND
GND
VMIC
MIC1_P
MIC2_N
MIC2_P
GND
MIC1_P
MIC1_N
V_MIC
GND
MIC2_P
MIC2_N
V_MIC
GND
GND
GND
GND
GND
PWRKEY
GPIO_25
GPIO_24
VBAT
GND
GPIO_25
GPIO_24
VBAT
GND
GND
GPIO_15
GND
GPIO_14
GPIO_26
VCHGER
VBAT
GND
GND
GPIO_14
GPIO_26
GND
GPIO_15
GND
GND
GND
GND
GND
GND
GND
GND
GND
VCHGER













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