Tascam DM-24 Service Manual page 41

MAIN PCB CPU BLOCK DIAGRAM (part 2)
MOTHER PCB
J4
CARD1
37
38
39
40
J5
CARD2
2
1
P4
U501
J501
10
TC IN
MIDI PCB
U502
J503
12
MIDI IN
J504
13
MIDI OUT
J505
14
MIDI THRU
/MTC OUT
5
1
P501 9
4
2
10
3
3
11
2
4
12
5
13
6
14
7
15
8
TDIF REMOTE
DIG I/O PCB
P35
1
P902
6 2
2
7 1
3
8 5
4
9 4
5
RS-422
C.ROOM PCB P6
SOLO
13
VR1
12
11
FADER PCB
VR+5
P9
17ch 1,2
MF901
16ch
MF851
15ch 29
26
MF801
14ch
25
MF751
24
13ch 23
MF701
12ch
MF651
11ch
MF601
10ch
20
19
MF551 18
9ch
MF501
17
8ch 14
13
MF451
7ch
MF401
6ch
MF351
5ch
12
MF301
11
4ch 8
MF251
3ch
7
6
MF201 5
2ch
MF151
1ch
MF101
34
U50
2 18
3 17
4 16
5 15
U52
2 15
17 3
U2
U5 U127 14
7 17
13 12 LRCK
9 32Fs
6 LRCK_CHECK
U147 5
(FS/1024)
U12
5
4
3
9
12
6
+
5
7
-
U4
10
+ 9
11 -
1
-
3
2
+
U4
13
- 15
14 +
U163
4
2
5 3
1
11
15
14 13
12
10 9
U162
4
2
5 3
1
11
15
14 13
12
10 9
U161
4
2
5 3
1
11
15
14 13
12
10 9
VCC
D2
R4
D1
7
MAIN CPU (U11)
Q1
BT1 106 83
PE8 MCK 28.224MHz
SRAM(U8)
91 107
AN0 PE9
32
IRQ7
42
IRQ3
46
IRQ1
49
IRQ0
105
IRQ TIOC2B
102
IRQ TIOC1B
89
IRQ TIOC1A
88
IRQ TIOC0D
87 IRQ TIOC0C
43 TCLKC
104 86
TIOC2A TIOC0B
85 TIOC0A
48 47
RXD1 TXD1
51 50
RXD0 TXD0
74
EXTAL
34
RD
84 38
RESET WRL
Dual Port
RAM (U28)
4
6
INT L OE L
2
R/*W L
46
OE R
48
INT R R/*W R 50
PANEL CPU (U33)
100 83
AVCC PA15
96 43
AN5 PA8
95 32
AN4 PB9
94 31
AN3 PB8
93 2
AN2 PE15
92 1
AN1 PE14
91 112
AN0 PE13
97 AVSS PE12 111
42 IRQ3
46
IRQ1
49 IRQ0
48 47
RXD1 TXD1
51 50
RXD0 TXD0
74 34
EXTAL RD
84 38
RESET WRL
U31-44, U40-38, U52-6, U9-2
U2-1, U40-33, U125-16
3 1
X1 U3
7056kHz RESET
41
U23
2
MPG0
5
MPG1
MPG2 6
9
MPG3
DSP1 (U77)
MPG4 12
205
IRQ0
U25
197
FLAG0
157
RESET
DSP2 (U78)
205
IRQ0
U24
197
FLAG0
157
RESET
2
MPH0
MPH1 5
6
MPH2
MPH3 9
12 DSP3 (U87)
MPH4
205
IRQ0
197
FLAG0
U160 157
RESET
22
24
25
#INT DSP
49 27
33 DSP4 (U88)
35
205
IRQ0
197
FLAG0
157 RESET
DSP5 (U94)
205
IRQ0
197
FLAG0
157
RESET
DSP6 (U95)
205
IRQ0
197
FLAG0
157
RESET
DSP7 (U106)
197
FLAG0
U105
157
RESET
12
92 DSP8 (RESERVE)
197 FLAG0
157
RESET
#RESET MAIN
U6-44, U7-44, U23-1, U24-1, etc.
VCC
U47
1
P1
2 Q4
1 2 3 -24V 12
3
Q3
U164
-30V
U34
P7
4
1
34
P10
U5
28
3 4 5 6
P18
U30
9 11 34
TASCAM DM-24