Circuit Diagram (Main Sheet 2/3) (Digital) - Boss Roland GT-8 Service Notes

Dec.2004

CIRCUIT DIAGRAM (MAIN SHEET 2/3) (Digital)

fig.c-main-digital.eps
D +5 D 3. 3 +
AD_C
AD_B
AD_A
R134
SW_SCAN4
10k
SW_SCAN3
SW_SCAN2
1
SW_SCAN1
4
SW_SCAN0
C185 2
D +5
0.1 IC33
D 3. 3 + D +5 D +5 TC7SH32FU IC11
7 1 TC74VHC574FT(EL)
VCC NC
2 D14
NC
C194 C193 C186 3 D
NC 1SS352
N.I.U. N.I.U. 0.1 8
NC
4 5
GND DLY
R137
D D D
IC34 C189 N.I.U.(0)
M51953AFP
0.33/50
+
D 3. 3
D
1 4
DS OUT LED_CLOCK
LED_DATA3
3 R138
NC LED_DATA2
N.I.U
LED_DATA1
LED_DATA0
IC17
N.I.U.(S-80130ALMC-JAP-T2)
XRESET
D
MIDI
D 3. 3 +
+
JK7 R71 D 3. 3 C77
YKF51-5054 L10 120 0.1 R70
N1608Z601T01 IC16 2.2k
C78 PC400
14 N.I.U. R73 1 4
100 D4
12
15 1SS352 3 5
+
L11 D 3. 3
D 3. 3 +
N1608Z601T01 DA3 D
+
L12 R77 D 3. 3 N.I.U R76
N.I.U.(0) L13 22(1/2W) 2 1 10k
24 N.I.U.
22 D
25 7 1 5 3
L14 R79 IC18A IC18B
D
N.I.U.(0) 22 TC7W04F TC7W04F
D 3. 3 +
IC18C IC18D
D 3. 3 +
TC7W04F TC7W04F
C87
D 2 6
0.1
C92
CN2 10/16
D
A2001WR2-12P
ENCODER
D
D 3. 3 +
1 D
1
2 LED DATA
2
3 LED_DATA3
3
4 LED_CLOCK RA8
4
CRN34104J R85
5 SW_SCAN0
5
6 SW_DATA6 100k
6
7 SW_DATA5 RA9
7
CRN34101J
8 SW_DATA4
8
9 SW_DATA3 1 8
LED_DATA3
9
10 SW_DATA2 2 7
10 LED_DATA2
11 SW_DATA1 3 6
11 LED_DATA1
12 SW_DATA0 4 5
12 LED_DATA0
D 3. 3 +
LED_CLOCK
R86
C119 100
CN3 10/16
A2001WR2-8P
1 D
1
2
2
3
ENC_B
3
4
4 ENC_A
LED_DATA2
5
5
6 LED_DATA1 15
6
7 LED_DATA0 14
7
8 LED_CLOCK 13
8
12
11
10
SW SCAN
8
CN4
7
A2001WR2-13P 6
5
SW_SCAN0
1 SW_SCAN4
1 SW_SCAN4
2 SW_SCAN3
2 SW_SCAN3
3 SW_SCAN2 95
3 SW_SCAN2
RA15
4 SW_SCAN1
4 SW_SCAN1
5 CRN34101J
5
6 SW_DATA7 4 5 94
6
7 SW_DATA6 3 6 93
7
8 SW_DATA5 2 7 92
8
9 SW_DATA4 1 8 91
9
10 SW_DATA3 4 5 61
10
11 SW_DATA2 3 6 58
11
12 SW_DATA1 2 7 57
12
13 SW_DATA0 1 8 56
13
RA18
+
CRN34101J D 3. 3
D RA21 C123 15P 65
CRN34103J RA22
SW DATA CRN34103J X2
MA-406 (24MHz) 69
C125 15P
D 68
+
D 3. 3
D 3. 3 + D 3. 3 +
EXP DA4 1SS302 R93 79
MUTE
R94 10
2 1 D 80
/CTL 470k 88
MUTE
R95 D R96 87
CONTRAST
1, 2
4.7K 4.7K 86
85
84
BATT
JK8 C130 83
D 3. 3 + 0.001
2 82
3 81
D 3. 3 +
1 R100 DA5 1SS302 89
4.7k
2 1
HTJ-064-12D
D D
D D R104
N.I.U.(0) 62
+
R101 R102 C131 C132 D 3. 3
4.7K 4.7K C133 10/16 0.1 66
0.1 C134
0.01
63
R109
D 60
N.I.U.(0) 59
D
+
D 3. 3
CN5
R110 D
1K
1
1
2 C135
2
3 0.01
3
C138
0.1
A2001WR2-3P D D
D
C140
CN6
0.1
D
1
1
2 AD1
2
3 AD0
3
4
4 +
5 D 3. 3
5
6
6
7
7
D RA25
A2001WR2-7P N.I.U.
PANEL VR A/D
AD_C
AD_B
AD_A
AMP
R115
+
CONTROL 470 D 3. 3
JK10 IC37
2 4 1
3 C192
1 C188 3 2 N.I.U.
0.01
HTJ-064-12D TLP172A Q9
2SC4738 D R116
IC38 100k
D 4 1 1
3 2
R117
N.I.U 47k
D
+
C69 D 3. 3
D 3. 3 +
0.1
IC39
TC7SH04FU
D 4 2
12 9 D15
Q7 D7
13 8 D14
Q6 D6
14 7 D13
Q5 D5
15 6 D12
Q4 D4
16 5 D11 C198
D
Q3 D3
17 4 D10 0.1
Q2 D2
18 3 D9
Q1 D1
19 2 D8
Q0 D0
1 D15
OE
11 D14
CK
D13
D C72 D12
D 3. 3 +
0.1 D11
D10
D
D9
C74 D D8
+
D 3. 3 0.1
A2 3 7
C Y7
A1 2 9
B Y6
D A0 1 10
A Y5
12 9 11
Q7 D7 Y4
13 8 12
Q6 D6 Y3
14 7 5 13
Q5 D5 G2B Y2
15 6 4 14
Q4 D4 G2A Y1
16 5 6 15
Q3 D3 G1 Y0
17 4
Q2 D2
IC13
18 3
Q1 D1
19 2 TC74VHC138F
Q0 D0
D
1
OE
11
CK
D10
D D
D9
IC14 D8
TC74VHC574FT(EL)
D 3. 3 +
R141 R142
+
D 3. 3 10k 10k
R74
N.I.U.
+
D 3. 3
XRESET
R78
4.7K R80
1K
XB
ENC_B
D 3. 3 +
C80 R155 10K A20
0.1 R82 10K A19
D 3. 3 + R83 10K
A18
4 5 A17
D
R81 3 6 A16
4.7K R84 2 7 A15
1K 1 8 A14
XA
ENC_A
RA7
CRN34103J
C103
0.1
D 3. 3 +
D
C116 0.1
C117 0.1
C118
10/16 C120 0.1
D D
ESP_INT0
4
P13/A23/TIOCD0/TCLKB
3
P12/A22/TIOCC0/TCLKA
R147 N.I.U.(0)
2
P11/A21/TIOCB0
1 A20
IRQ5/SCK1/P35 P10/A20/TIOCA0
55 1 8 A19 4
IRQ4/SCK0/P34 A19
54 2 7 A18
RXD1/P33 A18
53 3 6 RA10 A17 5
RXD0/P32 A17
52 4 5 N.I.U.(0) A16
TXD1/P31 A16
50 1 8 A15 9
TXD0/P30 A15
49 2 7 A14
A14
48 3 6 RA11 A13 10
A13
47 4 5 N.I.U.(0) A12
P17/TIOCB2/TCLKD A12
46 1 8 A11
P16/TIOCA2 A11
45 2 7 A10
P15/TIOCB1/TCLKC A10
44 3 6 RA12 A9
P14/TIOCA1 A9
N.I.U.(0)
43 4 5 A8
A8
41 1 8 A7
A7
40 2 7 A6
PG0/ADTRG/IRQ6 A6
RA13
39 3 6 A5
A5
38 4 5 N.I.U.(0) A4
A4
37 1 8 A3
P27/TIOCB5/TMO1 A3
36 2 7 A2
P26/TIOCA5/TMO0 A2
RA16
35 3 6 A1
P25/TIOCB4/TMCI1 A1
34 4 5 N.I.U.(0) A0
P24/TIOCA4/TMRI1 A0
P23/TIOCD3/TMCI0
32 1 8 D15
P22/TIOCC3/TMRI0 D15
31 2 7 D14
P21/TIOCB3 D14
30 3 6 RA19 D13
P20/TIOCA3 D13
N.I.U.(0)
29 4 5 D12
D12
28 1 8 D11
D11
27 2 7 D10
NMI D10
26 3 6 RA20 D9
D9
N.I.U.(0)
25 4 5 D8
D8
24 1 8 D7
EXTAL D7/PE7
23 2 7 D6
D6/PE6
RA23
22 3 6 D5
XTAL D5/PE5
21 4 5 N.I.U.(0) D4
D4/PE4
19 1 8 D3
AVCC D3/PE3
18 2 7 D2
VREF D2/PE2
17 3 6 RA24 D1
P47/AN7/DA1 D1/PE1
16 4 5 N.I.U.(0) D0
P46/AN6/DA0 D0/PE0
P45/AN5
71
P44/AN4 PF7/PHAI
72
P43/AN3 PF6/AS
73 R97 N.I.U.(0)
P42/AN2 PF5/RD
R98 N.I.U.(0)
74
P41/AN1 PF4/HWR
75 R99 N.I.U.(0)
P40/AN0 PF3/LWR/IRQ3
76
AVSS PF2/WAIT/IRQ2
D
64
RES
WDTOVF(FWE*)
77
PF1/BACK/IRQ1/CS5
78
STBY PF0/BREQ/IREQ0/CS4
96
PG1/CS3/IRQ7/CS6
97
PG2/CS2
98
MD2 PG3/CS1/CS7
99
MD1 PG4/CS0
MD0
1
2
CN7
IC22
HD6412312SVF
D
+
D 3. 3
D 3. 3 +
R148
10k
IC26E IC26D
TC74HC08AF 12 TC74HC08AF
C139 11
0.1 13
+
D 3. 3
D
R149
10k
RA1 RA2
CRN34103J CRN34103J
RA3
CRN34101J
9 12 1 8
D7 Q7
8 13 2 7
D6 Q6
7 14 3 6
D5 Q5
6 15 4 5
D4 Q4
5 16 1 8
D3 Q3
4 17 2 7
D2 Q2
3 18 3 6
D1 Q1
2 19 4 5
D0 Q0
1 RA4
OE
11 CRN34101J
CK
IC12
TC74VHCT574AF 5V(or 3.3V)
C71
D
0.1
RA5
CRN34104J
9 12 1 8
D7 Q7
8 13 2 7
D6 Q6
7 14 3 6
D5 Q5
D 6 15 4 5
D4 Q4
5 16
D3 Q3
4 17 RA6
D2 Q2
3 18 CRN34101J
D1 Q1
2 19
D0 Q0
1
OE
C76
11
CK
0.1
IC15
TC74VHCT574AF
D D
A18
2M SRAM
A17 48 45 D15
A16 I/O16
A16 1 43 D14
A15 I/O15
A15 2 41 D13
A14 I/O14
A14 3 39 D12
A13 I/O13
A13 4 36 D11
A12 I/O12
A12 5 34 D10
A11 I/O11
A11 6 32 D9
A10 I/O10
A10 7 30 D8
A9 I/O9
A9 8 44 D7
A8 I/O8
A8 18 42 D6
A7 I/O7
R87
A7 19 40 D5
A6 I/O6
10K A6 20 38 D4
A5 I/O5
A5 21 35 D3
A4 I/O4
D 3. 3 +
A4 22 33 D2
A3 I/O3
A3 23 31 D1
A2 I/O2
A2 24 29 D0
A1 I/O1
A1 25
A0 +
47 D 3. 3
NC
17
NC
12 16
CE2 NC
D5
26 10
CE1 NC
IC26B 28 9 RB500V-40
OE NC
TC74HC08AF 11
WE
6 14 37
UB VCC
15
LB
IC26C 13 C121
IC
TC74HC08AF 0.1 D6
8 46
GND
27 1SS352
GND
IC19
D
UPD442012AGY-BB85X-MJH R88
10k
R89 10k 3 R90
-
4 1M(F) BT2
BATT
N.I.U(BH-32)
1
+
IC23A
D 3. 3 +
TC75S51F R91
4.7M(F) BT1
BCR20H4
IC23B
TC75S51F
D D
-
C122
D 3. 3
0.1
+
D
8M Flash C124
0.1
A19 16 45 D15
A18 DQ15/A-1
A18 17 43 D14
A17 DQ14
A17 48 41 D13
A16 DQ13
A16 1 39 D12
A15 DQ12
A15 2 36 D11
MASTER
A14 DQ11
A14 3 34 D10
A13 DQ10
A13 4 32 D9
A12 DQ9
A12 5 30 D8
A11 DQ8
A11 6 44 D7
A10 DQ7 GUITAR_IN
A10 7 42 D6
A9 DQ6
A9 8 40 D5
A8 DQ5
A8 18 38 D4
A7 DQ4
A7 19 35 D3
A6 DQ3
A6 20 33 D2
+ A5 DQ2 LRCK
D 3. 3 A5 21 31 D1
A4 DQ1
A4 22 29 D0
A3 DQ0
A3 23
A2
R106 A2 24
A1
N.I.U A1 25 9
A0 NC
10
+ NC
D 3. 3 13
NC +
26 14 D 3. 3
CE NC
3 11
WE
28 37
OE VCC
IC26A 47
BYTE
TC74HC08AF 15 C136 C137
RY/BY
0.1 10/16
12
RESET
27
VSS
46
VSS
IC25
D
MBM29LV800BA-70PFTN-SFKE1
A20
D15
A20 1 1
A19 1 TP1 TP2 1 D14
D 3. 3 +
A18 1 TP3 TP4 1 D13
TP5 TP6
A17 1 1 D12
+
IC35 D 3. 3 A16 1 TP7 TP8 1 D11
TC7SH04FU A15 1 TP9 TP10 1 D10
TP11 TP12
2 4 A14 1 1 D9
C190 A13 1 TP13 TP14 1 D8
0.1 1 A12 1 TP15 TP16 1 D7
4 A11 1 TP17 TP18 1 D6
TP19 TP20
2 A10 1 1 D5
A9 1 TP21 TP22 1 D4
D A8 1 TP23 TP24 1 D3
TP25 TP26
A7 1 1 D2
A6 1 TP27 TP28 1 D1
C191 D A5 1 TP29 TP30 1 D0
0.1 TP31 TP32
A4 1
+
IC36 A3 1 TP33 D 3. 3
TC7SH32FU A2 1 TP34 1
A1 1 TP35 TP36 1
TP37 TP38
A0 1 1
1 TP39 TP41 1
1 TP40 TP43
TP42
1 D
TP44
RA26
CRN34103J
D
R133 R151
+ 5 +
D N.I.U.(0) N.I.U D 3. 3
TO LCD
C70
0.1 CN1
A2541WR2-2A16NP
16
16
15
D
15
Data Bit 7 14
14
Data Bit 6
13
13
Data Bit 5 12
12
Data Bit 4 11
11
Data Bit 3 10
10
Data Bit 2 9
9
Data Bit 1 8
8
Data Bit 0 7
7 +
Enable signal D 3. 3
6
6
Read/Write 5
5
Resister Select 4
4
Contrast R69
3
3
2 470
2
1 Q8
1
2SC4116GR
R72
C75 1
CONTRAST
0.1
10K
D C79
0.1
R75
D 330
D
C187
0.01
D
D 3. 3 +
C81 10/16
C83 0.1
C85 0.1
C88 0.1
C90 0.1
C93 0.1
C95 0.1
C97 0.1
C99 0.1
C101 0.1
C104 0.1
C106 0.1
C108 0.1
C110 0.1
C112 0.1
C114 0.1
D
A13 81 63 TRR5 A13
CA13 TRR5
A12 82 62 TRR4 A12
CA12 TRR4
A11 83 61 TRR3 A11
CA11 TRR3
A10 84 60 TRR2 A10
CA10 TRR2
A9 86 58 TRR1 A9
CA9 TRR1
A8 87 57 TRR0 A8
CA8 TRR0
A7 88 56 A7
CA7 TRCKIN
A6 89 A6
CA6
A5 91 52 A5
CA5 RST2
A4 92 53 A4
CA4 RST1
A3 94 A3
CA3
A2 95 54 A2
CA2 VPOUT
A1 96 A1
CA1
A0 97 110 TRS5 A0
CA0 TRS5
111 TRS4
TRS4
112 TRS3
TRS3
D15 99 113 TRS2 D15
CD7 TRS2
D14 100 114 TRS1 D14
CD6 TRS1
D13 102 115 TRS0 D13
CD5 TRS0
D12 103 117 D12
CD4 TRCKO
D11 104 D11
CD3
D10 105 D10
CD2
D9 106 142 D9
CD1 SYO
D8 107 143 D8
CD0 SYI
D
74 28
INT1 EA9
75 27
ESP_INT0 INT0 EA8
25
EA7
77 24
CS EA6
78 23
WR EA5
79 21
RD EA4
20
EA3
D 3. 3 + D 3. 3 +
65 19
DIRECT EA2
66 17
+ CTYPE EA1
67 16
EAMPX EA0
68
RFRSH
X1 69
PWRSAV
4 1 70 50
VDD OE GRAMC ED23
71 49
SHRMD ED22
48
ED21
47
D
ED20
2 3 30 46
GND OUT OSC ED19
45
ED18
SG-8002JC(67.7376MHz) 43
D
ED17
118 42
DA7 ED16
119 41
DA6 ED15
121 40
DA5 ED14
122 39
DA4 ED13
R146 123 38 R144
DA3 ED12
N.I.U.(0) N.I.U.(0)
125 35
DA2 ED11
126 34
SEND
DA1 ED10
127 33
DA0 ED9
R103
32
ED8
N.I.U.(0) 129 10
AD3 ED7
130 9 R145
AD2 ED6
N.I.U.(0)
132 8
AD1 ED5
133 7
AD0 ED4 RETURN
5
ED3
R105 134 4
LRCK1 ED2
N.I.U.(0)
135 3
LRCK0 ED1
2
ED0
R107 137
BCK1
N.I.U.(0)
138
BCK BCK0
12
WE
139 13
MCK MCK1 CAS
141 14
MCK0 RAS
R108
+ +
N.I.U.(0) D 3. 3 76 D 3. 3
XTESTT
131
XTESTS
31
TESTB
IC20
RA0A-101 (TC223C080AF-101)
D
D 3. 3 + C145
C141 C142 0.1
D 3. 3 + D 3. 3 +
10/16 10/16
D
R111 R112
2 4
C143 C144
D D
0.1 0.1 150 IC28 N.I.U.(0)
TC7SH04F
D
+
D 3. 3 12 26
ILRCK TXP
13 25
ISCLK TXN
14
SDIN
20
U/TEST
R156 21
OMCK
10k 18
TEST/U
3
AD2/EPMH
CDIN 27
AD1/CDIN/TEST
XDCS 2 R114
AD0/CS/TEST
47k
DCCLK 28 17
SCL/CCLK/ORIG TEST/V
D_CDOUT 1
SDA/CDOUT/COPY/C
XDOUT_RESET 9
RST
DINT 19
INT/AUDIO
15 24
TCBL H/S
10
TEST/APMS
11
TEST/TCBLD
16
TEST/CEN
4 7
RXP/SFMT0 TEST
5 8
DGND/SFMT1 TEST
R153 R154
10k 10k IC27
CS8406-CZ ZR
D
D
GT-8
D 3. 3 +
C82 10/16
C84 0.1
C86 0.1
C89 0.1
C91 0.1
C94 0.1
C96 0.1
C98 0.1
C100 0.1
C102 0.1
C105 0.1
C107 0.1
C109 0.1
C111 0.1
C113 0.1
C115 0.1
D
81 63 TRS5
CA13 TRR5
82 62 TRS4
CA12 TRR4
83 61 TRS3
CA11 TRR3
84 60 TRS2
CA10 TRR2
86 58 TRS1
CA9 TRR1
87 57 TRS0
CA8 TRR0
88 56
CA7 TRCKIN
89
CA6
91 52
CA5 RST2
92 53
CA4 RST1
94
CA3
95 54
CA2 VPOUT
96
CA1
97 110 TRR5
CA0 TRS5
111 TRR4
TRS4
112 TRR3
TRS3
99 113 TRR2
CD7 TRS2
100 114 TRR1
CD6 TRS1
102 115 TRR0
CD5 TRS0
103 117
CD4 TRCKO
104
CD3
105
CD2
106 142 RA14
CD1 SYO
CRN34103J
107 143
CD0 SYI
RA17
CRN34103J D 3. 3 +
74 28 IC24
INT1 EA9
75 27 28 43 1 8
INT0 EA8 A8 I/O16
25 27 42 2 7
EA7 A7 I/O15
77 24 26 41 3 6
CS EA6 A6 I/O14
78 23 25 40 4 5
WR EA5 A5 I/O13
79 21 24 38 1 8
RD EA4 A4 I/O12
20 21 37 2 7
EA3 A3 I/O11
65 19 20 36 3 6
DIRECT EA2 A2 I/O10
66 17 19 35 4 5
CTYPE EA1 A1 I/O9
67 16 18 10 ED7
EAMPX EA0 A0 I/O8
68 9 ED6
RFRSH I/O7
69 13 8 ED5
PWRSAV NC I/O6
70 50 14 7 ED4
GRAMC ED23 NC I/O5
71 49 17 5 ED3
SHRMD ED22 NC I/O4
48 32 4 ED2
ED21 NC I/O3
47 3 ED1
D
ED20 I/O2
30 46 2 ED0
OSC ED19 I/O1
D 3. 3 +
45
ED18
43 22
ED17 VCC
118 42 6
DA7 ED16 VCC
119 41 16 1
DA6 ED15 RAS VCC
121 40 30
DA5 ED14 UCAS
122 39 31 C129
DA4 ED13 LCAS
123 38 15 10/16
DA3 ED12 WE
125 35 ED7 29 44
DA2 ED11 OE VSS
126 34 ED6 39
DA1 ED10 VSS
127 33 ED5 D 23
DA0 ED9 VSS
32 ED4
ED8
129 10 ED3 LC32V4265CT-25-TLM-E
D
AD3 ED7
130 9 ED2
AD2 ED6
C126 C127 C128
132 8 ED1
AD1 ED5
133 7 ED0 0.1 0.1 0.1
AD0 ED4
5
ED3
134 4
LRCK1 ED2
135 3
LRCK0 ED1
2
ED0
137
BCK1
138
BCK0
12
WE
139 13
MCK1 CAS
141 14
MCK0 RAS
76
XTESTT
131
XTESTS
31
TESTB
IC21
RA0A-101 (TC223C080AF-101)
D
TR1
PT-10(2280-T008) DIGITAL OUT
C146 47/16
R113 L15 C197 JK9A
75 SBT-0180W 270p YKC21-3117
1 6 4 2 2
2
C147 0.1 3 4 3 1 1
JK9B
A
YKC21-3117
D
D
C148
N.I.U.
D
35