Yamaha Tyros 1 Service Manual

31 Tyros / TRS-MS01
PIN
NO.I/O
FUNCTION NAMEPIN
NO.I/O
FUNCTION NAME
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
OUTER
NO.
E5
D4
C3
B2
A1
D5
E6
C4
B3
A2
A3
D6
E7
C5
B4
A4
D7
C6
E8
D8
B5
A5
C7
B6
E9
D9
C8
A6
B7
A7
E10
D10
C9
B8
A8
B9
E11
D11...

32Tyros / TRS-MS01
PIN
NO.I/O
FUNCTION NAMEPIN
NO.I/O
FUNCTION NAME
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
303
314
315VSS2
VDDC
DMAL1
DCSL2...

33 Tyros / TRS-MS01
PIN PIN
NO.NAME I/O FUNCTION
NO.NAME I/O FUNCTION
1 TEST I Test pin 41 SD0 I/O
2 VDD Power supply 42 SD1 I/O
3 XIN I Clock 43 SD2 I/O
4 XOUT O Clock 44 SD3 I/O
5 VSS Ground 45 SD4 I/O
6 /RESET I Reset 46 SD5 I/O
7 /MCS I Main CPU chip select 47 SD6 I/O
8 /MRD I Main CPU read 48 SD7 I/O
9 /MWR I Main CPU write 49 SD8 I/O Slave CPU data 0-15
10 /MIRQ O Main CPU interrupt request 50 SD9 I/O
11 MA0 I Main CPU address 0 51 SD10 I/O
12 VSS Ground 52 VSS (Ground)
13 MA1 I 53 SD11 I/O
14 MA2...

34Tyros / TRS-MS01
PIN PIN
NO.NAME I/O FUNCTION
NO.NAME I/O FUNCTION
1 8//5 I Data transmission speed 33 /TRKO I Track 00 signal
2 XTALSET I Clock select 34 /INDEX I Index signal
3 /RESET I Rest 35 /RDATA I Read data input from FDD
4 E//RD I Enable/Read 36 XTAL2 Clock
5 RW//WR I Read/write/Write 37 EXTAL2
6 /CS I Chip select 38 NC
7 /DACK I DMA acknowledge 39 XTAL1 Clock
8 RS0 I Register select 40 EXTAL1
9 RS1 I 41 VSS4 Ground
10 VSS1 Ground 42 VSS5
11 VSS2 43 NC
12 D0 I/O 44 VCC2
13 D1 I/O 45 VCC3 Power...

35 Tyros / TRS-MS01
PIN PIN
NO.NAMEI/O FUNCTION
NO.NAMEI/O FUNCTION
1 AB2 I Address bus input (A [12:1]) 65 MA2 O Maltiplex memory address bus
2 AB1 I Address bus input (A [12:1]) 66 MA4 O Maltiplex memory address bus
3 AB0 I SH-3 bus Interface 67 MA3 O Maltiplex memory address bus
4 CS# I Decode 68 V
SSVSS5 M/R# I/O Registor Setting 69 CLKI I Selectable Input clock
6 BS# I Bus Start Signal Input 70 TESTEN I Test enable interface
7 RD# I Read Signal Input 71 CLKI2 I Selectable Input clock
8 WE0# I Wright...

36Tyros / TRS-MS01

 
IC BLOCK DIAGRAM (Tyrps)
TC74HC245AF (XS720A00) 
TRANSCEIVER
1
D1R
2
3
4
5
6
7
8
9
10
A1
A2
A3
A4
A5
A6
A7
A8
GND11 12 13 14 15 16 17 18
19
20
V
CC
G
B1
B2
B3
B4
B5
B6
B7
B8
TC74VHCT245AFT
 (XT744A00)
HD74LVC245A (XW148A00) HD74LVC138FP  (XS963A00)
SN74LVC138ANSR (X3510A00)
3 to 8 Demultiplexer
1
2
3
4
5
6
7
15
14
13
12
11
10 16
A
B
C
G2A
G2B G1Y7 Vcc
Y0
Y1
Y2
Y3
Y4
Y5
89
GND Y6 A
B
C
G2A
G1 Y0
Y1
Y2
Y4
Enable
Output
Select
G2B Y3
Y7 Y5
Y6Output
TC74VHC157F(EL) (XT475A00)...

37 Tyros / TRS-MS01
1
2
3
4
5
6
7
89 1011 1213 14 15 16OUT1
IN1
VDD
NC
NC
IN2
OUT2
Balance/Indivdual
Volume control Refarence Voltage
Filter
NC
GND
Volume/Volume2 control
Noise reduction
Balance/VOLUME2
Pass/VCA Switching
M51132L/FP (XE470A00)
VCA
Switching
Controled
Voltage
Regulater
SN74AHCT1G08DCKR (X0158A00)
Single 2-Input Positive-AND Gate 
1
2
3
A
B
GND5
4
Vcc
Y
INPUTSFUNCTION TABLE
OUTPUT
AB Y
H
L
L H
X
L H
L
X
LA6517M-TE-R (XT131A00)
NJM2100D (XZ435A00)
Dual Low Voltage Power AmplifierDM: IC002,...

38Tyros / TRS-MS01

 CIRCUIT BOARDS (Tyros)
CONTENTS
 DJACK Circuit Board (X2510C0) .................................................................................. 39
 DM Circuit Board (X2584D0) ........................................................................................ 40
 PNL Circuit Board (X2501E0) ....................................................................................... 44
 PNR Circuit Board (X2500E0)...

39 Tyros / TRS-MS01
IN OUT VIDEO OUT
NTSC / PAL USB
MIDI B
to DM-CN21 to DM-CN13 to DM-CN2
H
H’
321 IN N OUTMIDI A
ASSIGNABLE FOOT PEDAL
(VOLUME) (DSP VARIATION) (SUSTAIN)
H
H’
 DJACK Circuit Board
Component Side
Note: See parts list for details of circuit board component parts.
2NA-V881320  2 

40Tyros / TRS-MS01
 DM Circuit Board
2NA-V892380
to HARDDISK DRIVE (Option)
A
A’
Component Side