AKAI
ASSY NUMBER:
REVISION RECORD
APPROVED:ECO NO:LTR DATE:
123456
D
C
B
A
C
D
B
A
COMPANY:
TITLE:
PART NUMBER:
FILENAME:
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DRAWN: DATED:
DATED:
REV:
SIZE:
SHEET: OF
C
2
32
R.E./I.F/J.B/M.S./D.M. 7/20/2009
AD88MNB10A.sch
9-79-0506-B-1
9-40-0506-B
AD88/AD61 MAIN PCB
Copyright (c) 2009 Akai Digital Ltd.
POWER & I/O
Power input is 6VDC
N/C
*
N/C
* Provide plenty of copper for heat sinking for case of over voltage adapter
N/CN/C
N/C
MIDI IN
N/C
N/C
MIDI OUT
TDO
TDI
TMS
TCK
N/C
GND
JTAG EMULATOR
FPGA
DO NOT POPULATE FOR MP
N/C
Place this resistor
LCD CONTRAST
VDD
N/C N/C
USB_DIS_A Low (0V): 1.5k load disconnected from D+ line
USB_DIS_A High-Z: 1.5k load connected to D+ line as long as VBUS is present
This resistor allows reverse
OR'ing diode to ground
STM32 JTAG
FOR DEVELOPMENT ONLY
near micro
leakage current from Schottky
1
OUT
2
IN
3
GND
U1
NJU7223DL1-33
D4
MBRS140LT3
D6
MBRS140LT3
R6
10K
R32
10K
1
2
3
J7
P6
R4
0 ohm
12
3
D8
BAV99
TP2
C4
0.1uF
L1
10uH
C22
1uF
C39
1uF
1
2
3
4
5
6
7
8
J4
MIDI
C14
1000pF
C12
1000pF
R18
220 ohm
U2
TLP181
Q2
MBT4401
R17
220 ohm
R16
220 ohm
R19 10K
1
2
3
4
5
6
7
8
J5
MIDI
C15
1000pF
C16
1000pF
R20
47 ohm
C11
0.1uF
R1014.7k
C37
0.01uF
12
3
D3
BAV99
Q5
MBT4403
R42
10K
R41
33.2k 1%
R40
100k
C28
0.1uF
C2
4.7uF,25V
1
2
3
4
5
6
7
8
J15
C80
0.01uF
L2
10uH
1
2
3
Q4
MBT4403
R28
1K
R30
1K
R29 1K
C20
0.1uF
C19 0.1uF
R31
820K
G
DS
U3-B
FDC6306P
C21
1uF
D5
12V
C54
0.1uF
TP1
C18
0.1uF
R50 ohm
GND
1
+VBUS
2
D-
3
D+
4
5
6
J6
R1
0 ohm
C1
0.1uF
1
2
3
Q3
MBT4403
R21
1.5K
Q1
MBT4401
R2747K
R2656K
R3
10K
R210K
R22
47K
C3
100uF,10V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
J8
R23 10K
R24 10K
R25 10K
POWER
+3V3
MIDI_TX
MIDI_RX
+3V3
+3V3
+3V3
TDO_FPGA
TDI_FPGA
TMS_FPGA
+3V3+3V3
LCD_CONTRAST
LCD_CONTRAST_DC
TCK_FPGA
+5VUNREG
+3V3
USB-
USB+
+3V3
USB_DIS
STM_TRST
STM_TDI
STM_TMS
STM_TCK
STM_TDO
STM_RST
+3V3
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