双声道蓝牙音响最小系统原理图

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1 2 3 4 5 PIO04/SPI_CS PIO03/SPI_MISO SPI/PCM# PIO02/SPI_MOSI PIO05/SPI_CLK 6 7 8 9 10 11 12 13 3k3 SPK_RN 2 R25 3k3 SPK_RP 2 R31 1 1 14
GND GND GND PIO15 PIO14 SPI_CSB SPI_MISO SPI_PCM SPI_MOSI SPI_CLK PIO12 PIO10 PIO11
<Checked Date>
DATED:
CODE:
SIZE:
DRAWING NO:
REV:
<QC By> <Released By>
<QC Date>
DATED:
<Code>
SCALE:
C <Drawing Number> <Revision>
SHEET:
<Release Date>
<Scale>
1 OF
7.2K
+
1 C12 2 47uf
1
100MHz600R´ÅÖé L1 C11 0.1uf 47uf
+
1 C3 2 1/2VDD
MFB
J1-1 C7 220PF J1-2 J1-3
2
VBAT
33p C17
150NF SPK_RP SPK_RN C15 C16 150nf
10k R26 R17 10k
6
5
4
3
2
LTR ECO NO:
1
REVISION RECORD APPROVED: DATE:
U1 VDD_AMP 1 2 SPK_LP SPK_LN SPK_RP SPK_RN SPK_BUF_L SPK_BUF_R 3 4 5 6 VDD GND SPK_BUFR VREF SPK_BUFL GND M_AMP_S_3W U3 34 33 32 31 30 29 28 2 R6 1 MIC_BIAS SPKOUT_LP 1 2 7 VOL8 NEXT PRE SPK_IN+ SPK_INGND GND RC_FDIV BASS+ BASSTH+ TH6 5 4 3 J7-1 J7-2 J4-1 J4-2 SPK_OUT_P SPK_OUT_N LED1 /SD LED2 LED3 12 11 10 9 8 7 SPKOUT_LP SPKOUT_LN PIO29/LED0 /SD_AMP PIO30/LED1 LED2
<Release Date>
<Scale>
2 OF
2
1k 1
A
MIC_BIAS TITLE:
DRAWN: 10NF C24 10NF C23
DATED:
<Drawn By>
CHECKED:
<Drawn Date>
DATED:
PIO04/SPI_CS PIO05/SPI_CLK PIO02/SPI_MOSI
J3-2 J3-3
<Checked By>
QUALITY CONTROL: J3-4 RELEASED:
C
VBAT 100MHz600R´ÅÖé L2
C9 150nf SPK_LP SPK_LN 150nf C10
10k R20 R16 10k 33p C14 R18
U4-A
3 + 2 R12 39k
PT2308
1 C29 22uf C30 3K3 MFB R2 10R SPK_BUF_L
C
1
/SD
VDD_AMP
C21 200NF
LINEA_P 1 N U5 P MIC 5.1k 1 100MHz50R´ÅÖé
C4 1 VIN BAT54C 3
2
C22 200NF
+
D1
2
R34
LINEA_N
D2
100uf
<Company Name> <Title>
NC
A
VBAT PIO03/SPI_MISO J3-1
2
2 R32
1
B
1 C5 1nf 2
C2 2.2uF
R4
RST
33k
SPI/PCM#
1
C26 10uF
R13
R8
2
C13 1nF,NC
/SD_AMP
B
C1 1uF
1
2.2UF C25
4.7k
C18
C19
R14 1 COMPANY:
2
c1,c19±ØÐë×ã¹»´ó
5V_USB
L4
5V_USB
BEAD1 2 B1 1 2 1 J2-1 J2-2
RESET
USB_N
15
16
17
18
19
20
21
Baidu Nhomakorabea
22
23
24
25
26
R52
27
USB_P
PIO13 PIO17
CHARGE
PIO07
1V8_SMPS VOL+
VREG
PIO21
PIO18
LED1
LED0
LED2
1V8
LED2
VBAT
RST PIO30/LED1
1V8_SMPS
5V_USB
PIO21
PIO29/LED0
QUALITY CONTROL:
<Checked Date>
DATED:
CODE:
SIZE:
DRAWING NO:
REV:
<QC By>
RELEASED:
<QC Date>
DATED:
<Code>
SCALE:
C <Drawing Number> <Revision>
SHEET:
<Released By>
7.2K R27
U4-B
5 + 6 -
PT2308
SPK_BUF_R 7 C31 22uf R21 C8 R29
R15 39k 220PF
2 3K3
1V8_SMPS VIN VBAT 2
VIN
C64 VDD_AMP
100nf 2
10k NC
R1
2
1
10k
1
J9-1 200mR J9-2 4.7k R30 PT2308 8 + 4 U4-C 2.2uF 10nf C20 2.2uF 10 PIO21 1/2VDD R19 L5 100MHz50R´ÅÖé ½ÓÇ¿ÏÂÀ-IO 2 R23 1
2
6
5
4
3
2
LTR ECO NO:
1
REVISION RECORD APPROVED: DATE:
D
D
C
C
B
B
COMPANY:
<Company Name> <Title>
A
DRAWN: DATED:
A
TITLE:
<Drawn By>
CHECKED:
<Drawn Date>
DATED:
<Checked By>
U2
AGND SPKL_P SPKL_N SPKR_P SPKR_N LINEB_P
41 40 39 38 37 36 35
D
BTM_UCT8289-35
LINEB_N MIC_BIAS MIC_P MIC_N PIO06 PIO01 PIO00
LINEA_P LINEA_N
SPKOUT_LN
BAT_IN