1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D
D
C
C
B
B
A
A
DESIGNED BY
DRAWN BY
CHECKED BY CHECKED BY MODEL
DRAWING No.
DATE
TITLE
KOD-A31324
*
REVISED BY
DATE
REMARK
REVISAL REASON
RST_THIS
RX_HOST
TX_HOST
BOOT_THIS
22p 5%
C26
22p 5%
C27
R15
10K
4.7u
C61
RST_NEXT
10K
R46
DTC114EUB
DT2
C22
1000p
PWM_OCT1
PWM_OCT2
PWM_VCA1
PWM_VCA2
PWM_VCA_L
PWM_PW1
PWM_PW2
PWM_FM
PWM_RES
PWM_NOTE1
PWM_NOTE2
+5V
TO-1608BC-MRE
R
LED1
6.8K
R27
R
LED2
NU
6.8K
R29
SW_VCO1A
SW_VCO1B
SW_SYNC
SW_VCO2A
SW_VCO2B
SW_RNGON
DG_AD_VCF
DG_AD_FM
TX_THIS
RX_THIS
RST_NEXT
RESET_THIS
BOOT_THIS
X1
X0
DG_INT_VCO1
DG_INT_VCO2
DG_INT_VCF
DEBUG_LED1
DEBUG_LED2
R14
NU
INT_VCO2
INT_VCO1
WAVE_B1
WAVE_A1
WAVE_B2
WAVE_A2
RNG_ON
SYNC_OFF
R45
10K
R48
10K
0.23-3.0V
R49
10K
INT_VCF
220K
R58
2SC2712-BL
Q1
R64
10K
0-3.3V
DG_SW_SYNC
INT_VCO1
INT_VCO2
INT_VCF
AD_VCF
AD_FM
R28 1K
AD_VCF
AD_FM
12.288MHz
1
2
X1
1.5 +/-0.55V
1.5 +/-0.55V
C20
10u Z
C23
47p 5%
CV_VCA1
CV_VCA2
CV_FM
CV_VCF
CV_RES
CV_VCA_L
3.3v
0v
3
4
IC5B
SN74LV04APWR
TL064CPWR
IC7E
3.3v
0v
3.3v
0v
CV_VCF
TL064CPWR
5
6
7
IC7B
3.3v
0v
CV_VCA1
TL064CPWR
10
9
8
IC7C
CV_VCA2
TL064CPWR
IC6E
IC5G
SN74LV04APWR
CV_VCA_L
TL064CPWR
3
2
1
IC7A
-3.3~3.3
-3.3~3.3
TL064CPWR
10
9
8
IC8C
3.3v
0v
TL064CPWR
12
13
14
IC7D
-3.3~3.3
TL064CPWR
IC8E
3.3v
0v
CV_FM
3.3v
0v
CV_RES
TL064CPWR
3
2
1
IC8A
-3.3~3.3
-3.3~3.3
TL064CPWR
12
13
14
IC8D
TL064CPWR
5
6
7
IC8B
C31
10u Z
C34
47p 5%
-5V
+5V
C28
10u Z
C25
47p 5%
C39
10u Z
C42
47p 5%
-5V
+5V
C38
10u Z
C36
47p 5%
C46
10u Z
C49
47p 5%
-5V
+5V
C44
10u Z
C43
47p 5%
IN
1
GND
2
EN
3
NC
4
OUT
5
TLV70033DCKR
IC9
C67
10u 20%
C64
10u 20%
+5V
R81
1.1K 1%
R82
43K 1%
R83
120K 1%
R78
91K 1%
0.1u
C71
4700p
C72
220p 5%
C65
-3.3~3.3
R80
100K 1%
R84
100K 1%
C70
1u Z
R79
100K 1%
C69
1u Z
1.1V
1.1V
R91
1.1K 1%
R92
43K 1%
R93
120K 1%
R86
91K 1%
0.1u
C78
4700p
C80
220p 5%
C74
1.1V
R100
1.1K 1%
R101
43K 1%
R102
120K 1%
R95
91K 1%
0.1u
C87
4700p
C88
220p 5%
C84
1.1V
R67
1.1K 1%
0.033u
C57
2200p 5%
C60
1.1V
fc = 3.3kHz
R87
1.1K 1%
R88
43K 1%
R89
120K 1%
R85
91K 1%
0.1u
C75
4700p
C76
220p 5%
C73
1.1V
R96
1.1K 1% 43K 1%
R97
120K 1%
R98
91K 1%
R94
0.1u
C85
4700p
C86
220p 5%
C81
1.1V
-3.3~3.3
120K 1%
R69
91K 1%
R65
100p 5%
C52
43K 1%
R68
R75
NU
C66
NU
C68
NU
1.1V
R77
NU
R73
NU
C63
NU
R76
NU
TP5
F
TP6
R
TP8
FM
TP10
N
TP7
A_R
TP9
A1
TP11
A2
3.3VA
3.3VA
3.3VA
3.3VA
3.3VA
3.3VA
3.3VA
+5V
R74
NU
1K
R50
OSC_TR1
R33
22K
R39
27K
OSC_TR
VOICE CPU
PWM FILTERS
0.23-3.0V
-5V
0
R90
0
R99
SWCLK_
SWDIO_
SWO_
For Debug
1
2
3
4
5
6
CN12
NU
SWCLK_
SWDIO_
SWO_
0.1u
C58
+5V
10u 20%
C62
BICK
SDTI
LRCK
MCLK
BLM18BB121SN1D
L10
0
R66
C59
1u Z
R72
NU
100
R60
100
R61
100
R62
100
R63
R55
NU
0
R71
PWM_VCF
PWM_VCA_R
MULTI_POST
1K
R70
+5V
PITCH1/SHAPE1->INT VCO1
Auto Tuning Usage
CUTOFF->INT_VCF
PITCH2/SHAPE2->INT VCO2
RESONANCE->AD_VCF
FM->AD_FM
MULTI_PRE
VCF_SW3
VCF_SW2
VCF_SW1
PWM_VCF
PWM_VCA1
PWM_VCA2
PWM_VCA_L
PWM_FM
PWM_RES
CV_VCA_R
PWM_VCA_R
CV_VCA_R
R104
1.1K 1%
R105
43K 1%
R106
120K 1%
R103
91K 1%
0.1u
C90
4700p
C91
220p 5%
C89
1.1V
TP12
A_L
3.3v
0v
PA15
50
PC13
2
PC14
3
PC15
4
OSC IN
5
NRST
7
ADC1_IN10
8
ADC1_IN11
9
PC2
10
PC3
11
PA0
14
PA1/PWM5_2
15
PA5/PWM2_1
21
PA6/PWM3_1
22
PB15/I2S2_SD
36
PB14
35
PB13/I2S2_CK
34
PB1/PWM3_4
27
PB0/PWM3_3
26
PC6/I2S2_MCK
37
PB5
57
PB6/PWM4_1
58
PB7/PWM4_2
59
PB2
28
PD2
54
PC12
53
SWCLK
49
SWDIO
46
USART6_RX
45
PA11/PWM1_4
44
USART1_RX
43
USART1_TX
42
SWO
55
PB4
56
BOOT0
60
PB8/PWM4_3
61
PC9/I2S_CKIN
40
PC4
24
PA8/MCO_1
41
PA4
20
PC5
25
PA7/PWM3_2
23
PB10/PWM2_3
29
OSC OUT
6
PA2/PWM5_3
16
PA3/PWM5_4
17
PB12/I2S2_WS
33
PA8
39
PC7
38
PB9/PWM4_4
62
PC10
51
PC11
52
IC3A
IC_STM32F401RBT6
VREF-
12
VREF+
13
VSS
18
VDD
19
VDD
48
VSS
47
VDD
64
VBAT
1
VSS
31
VDD
32
VCAP_1
30
VSS
63
IC3B
IC_STM32F401RBT6
+3.3V
TL084CPT
12
13
14
IC10D
DAC
1
2
IC5A
SN74LV04APWR
CV_PW1
CV_PW2
CV_PITCH1
TL064CPWR
3
2
1
IC6A
CV_PITCH1
CV_PITCH2
5
6
IC5C
SN74LV04APWR
CV_PITCH2
TL064CPWR
5
6
7
IC6B
9
8
IC5D
SN74LV04APWR
11
10
IC5E
SN74LV04APWR
3.3v
0v
13
12
IC5F
SN74LV04APWR
3.3v
0v
-3.3~3.3
3.3v
0v
CV_PW1
-0.6~0.6
CV_PW2
TL064CPWR
10
9
8
IC6C
fc = 10kHz
R16
1.1K 1% 27K 1%
R17
150K 1%
R18
56K 1%
R13
0.015u
C21
680p
C24
47p 5%
C18
1.1V
R34
1.1K 1%
R35
43K 1%
R36
120K 1%
R31
91K 1%
0.033u
C40
2200p 5%
C41
100p 5%
C37
1.1V
R51
1.1K 1%
R52
43K 1%
R53
120K 1%
R47
91K 1%
0.033u
C47
2200p 5%
C48
100p 5%
C45
1.1V
R19
1.1K 1%
4700p
C30
R20
270K 1%
fc = 10kHz
R11
1.1K 1%
4700p
C19
R12
270K 1%
TP1
P1
TP3
S2
TP4
S1
R54
10K
R59
2.2K
R37
10K
R42
2.2K
PWM_OCT1
PWM_PW1
PWM_PW2
PWM_NOTE1
fc = 3.3kHz
fc = 3.3kHz
-0.6~0.6
3.3v
0v
3.3v
0v
TL064CPWR
12
13
14
IC6D
R22
1.1K 1% 27K 1%
R23
150K 1%
R24
56K 1%
R21
0.015u
C32
680p
C35
47p 5%
C29
1.1V
TP2
P2
PWM_OCT2
PWM_NOTE2
-3.3~3.3
3.3v
0v
1.1V
3.3VA
RST_DAC
RST_DAC
MCLK
1
BICK
2
SDTI
3
LRCK
4
PDN
5
SMUTE
6
ACKS
7
DIF0
8
P/S
9
AOUTR 10
AOUTL 11
VCOM 12
VSS 13
VDD 14
DZFR 15
ZDFL 16
AK4384ET
IC4
parallel mode
24bit I2S
Auto Setting mode
pin 16/17/44/61/62 high resolution PWM
fc = 1.5kHz
fc = 1.5kHz
fc = 1.5kHz
fc = 1.5kHz
fc = 1.5kHz
fc = 1.5kHz
fc = 1.5kHz
TP100
NU
TP101
NU
TP102
NU
TP103
NU
TP104
NU
TP105
NU
+5Va
-5Va
internal pull-up
VOICE 1 only has to be pull-up(for debug)
CV_SPARE
PWM_SPARE
C82
10u 20%
C107
10u 20%
SW_SPARE
SW_SPARE
