1
ROLLS CORPORATION
5968 S 350 W
MURRAY, UT 84107
1
RFX128P B
16 SEPTEMBER 2001
Title
Size: Document Number:
Date:
Rev:
Sheet of
RFX128P MIDI BUDDY
Rb
+5V
+5V
PHANTOM PWR
9 - 15 V AC OR DC
MIDI OUT
UP DOWN
MIDI SHARE
012 3456789
+5V
+5V
+5V
+5V
+5V
+5V
+5V
P23
P22
P21
P20
P02
P01
P00
P33
P32
P31
P25
P24
P26
SW1 ASSIGNMENTS
5 = OPEN IS MIDI PRG CHNG OR SNG SEL CLOSED
6 = OPEN 1 - 128 CLOSED = 0 - 127
1 - 4 = BINARY MIDI CHANNEL ALL OPEN = 1 CLOSED = 16
C5
10U
I
1
G
2
O
3
U8
7805
13
4
2
5
J1
DIN 5
Q2
2N3904
D1
1N4001
D2
1N4001
2
3
1
J3
JAPDC
SW2 SW3
SW4
SW5
SW7
SW6
SW8 SW9
R37 150
13
4
2
5
J2
DIN 5
2
H2B3H2C
4
H2D
5
H2E
6
H2F
7
H2G
8
H2H9H2I
10
H2J
11
H2K
2
H1B
3
H1C4H1D5H1E6H1F7H1G8H1H9H1I
10
H1J
1
H1A
A1
16
B1
15
C1
3
D1
2
E1
1
F1
18
G1
17
A2
11
B2
10
C2
8
DP1
4
DP2
9
CAT1
14
CAT2
13
D2
6
E2
5
F2
12
G2
7
U4
2DSC DSP
R32
1K
R31
1K
R30
1K
R29
1K
Q1
2N3904
Q2
2N3904
R35 10K
R34
10K
R36
10K
R14
22K
R15
22K
1
H2A
R13
10K
R12
10K
R11
10K
R?
470
R39
10K
R10
10K
C6
1000 16V
R38 150
R1
100K
R2
100K
R5
100K
R6
100K
R4
100K
R3
100K
R261K
R27
1K
R28
1K
R8
10K
R7
10K
R9
10K
R16
22K
R17
22K
R18
22K
R19
22K
R20
22K
R21
22K
R22
22K
R23
22K
R24
22K
R25
22K
X1 4MHZ RES
310
11121231341526374859
10
A9B7C6D
14
VCC16GND
8
U2
74HC147
11121231341526374859
10
A9B7C6D
14
VCC16GND
8
U3
74HC147
SW12 SW 13
SW10
SW11
11
H1K
1
2
3
4
5
6
7
8
9 10
11
12
13
14
15
16
17
18
U1 ZILOG
Z86E04
49
U?D
SW DIP-6
58
U?E
SW DIP-6
67
U?F
SW DIP-6
211
U?B
SW DIP-6
112
U?A
SW DIP-6
C3
27PF
C4
27PF
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