bluetooth headset 蓝牙耳机原理图

5
4
3
2
5
4
3
2
1
VCHG VBAT
D
VCHG VBAT VBAT U4 3.3V
1.8V 1.8V 1.8V 1.8V C13
1.35V 1.35V 1.35V
1.35V 1.35V
J2
1 2 3
SWITCH3 0.15mm线宽 R4 10K C15 2.2uF C17 2.2uF
1 2 3 4 5
1.8V L3 C12 2.2uF C10 4.7uF C11 15pF C8 470nF C7 10nF CON5
U6 J4 R6 VOL+
1
CON1 2.2K C20 10pF
1 3 5
OUT TOUCH VDD
AR101 C22 100nF
OP2 OP1 VSS
6 4 2
B
B
3.3V U5 J3 R5 VOL-
XTAL-OUT
XTAL-IN
AU-REF
1
CON1 L6 2.2K 2.2uF C19
1 3 5
3.3V BEAD
A
R1 2.2K
A
2 4
L1
3 1
MIC Title <Title> Size B Date: Document Number <Doc> Wednesday, August 12, 2015 Sheet
1
4
2
15nH C16 15pF C4 15pF
Rev <RevCode> 1 of 1
U7
10nF
C
E1 ANTENNA 50阻抗 L2 1nH 走直线 C6 1pF 走直线 50阻抗 12
BT_RF
PIO[0]/UART_RX PIO[1]/UART_TX PIO[6] PIO[7] PIO[8]/UART_RTS PIO[9]/UART_CTS PIO[18] PIO[21] PIO[2]/SPI_MOS/PCM1_IN PIO[3]/SPI_MISO/PCM1_OUT PIO[4]/SPI_CS#/PCM1_SYNC PIO[5]/SPI_CLK/PCM1_CLK SPI_PCM#
D
2.2uF C18 2.2uF 4.7uH L4
C14 10nF
C9 10nF4.7uH
42
43 44
41 49 54
53 15 16
3 14
50 52 17
13 11
39
38
40
45 48
47
U1
33 63
8
VBAT D1 R2 R3 READ 1.8V C21 330R 330R R10
VDD_BT_LO VDD_BT_RADIO
10K
1
VOL+ VOLMOSI MISO CSB CLK PCM# CS SCL SDA PIO13
2
SW KEY-SPST
1 2 5 6
CS VCC SO/SIO1 HOLD#SIO3 SO/SIO0 WP#SIO2 SCLK GND
MX25U4033 CSB MISO PCM# MOSI CLK
CHG_EXT VBAT_SENSE
VDD_AUDIO VDD_AUX
LX_1V35 SMPS_1V35_SENSE VDD_ANA
VRHale Waihona Puke BaiduGENABLE
VREGIN_DIG
VOUT_3V3 SMP_BYP VDD_USB
VCHG
VDD_AUDIO_DRV
VDD_DIG
SMPS_1V8_SENSE VDD_AUX_1V8-1 VDD_AUX_1V8
8 7 3 4
J6
C
C5 1pF
14mil 线宽普通
CSR8615X
1 2 3 4 5
CON5
PIO[12]/QSPI_FLASH_CS#/I2C_WP PIO[10]/QSPI_FLASH_CLK/I2C_SCL PIO[11]/QSPI_IO[0]/I2C_SDA PIO[13]/QSPI_IO[1] PIO[14]/UART_RX PIO[15]/UART_TX PIO[16]/UART_RTS PIO[17]/UART_CTS VSS-SMPS-1V8 VSS-SMPS-1V35 AIO[0] LINE/MIC_AN LINE/MIC_AP MIC_BIAS SPKR_AN SPKR_AP LINE_BN LINE_BP USB_DP USB_DN NC NC1 RST#
VDD_PADS_1 VDD_PADS_2
VBAT SMP_VBAT
LX_1V8
LED[0] LED[1] LED[2]
37 36 66 59 60 62 57 61 58 65 64 30 28 24 34 29 22 25 26 31 23 21 27 32 20 56 55 35
BLUE D2 1.8V SW1 CS PIO13 SDA SCL
OUT TOUCH VDD
AR101
OP2 OP1 VSS
6 4 2
18
19
46 51
1
67
68 2
5
4
9
10
6 7
LS1 VBAT BEAD J5 L5
3
1
2.2uF U2 CRYSTAL-4
C1 C2 0.1uF
C3 0.1uF
C24 10nF J1
C23 100nF
SPEAKER
1 2
CON2