Yamaha ACU16-C Service Manual page 16

ACU16-C
MBCG46183-129PFV-G
PI N
NAME I/O
NO.
1 D5 I/ O
D6 I/ O
2
D7 I/ O
3
4 /I RQ0 I /O
5 /I RQ1 I /O
6 VSS6
7 /I RQ2 I /O
8 /I RQ3 I /O
9 /RD I
10 /WR I
11 /CE I
12 /ASTB I
TE STI 0 I
13
14 RX0 I
15 TX0 O
RX1 I
16
TX1 O
17
18 VSS18
19 VDD19
20 RX2 I
21 TX2 O
22 RX30 I
TX30 O
23
24 RX31 I
M37641M8-140FP (X2485100) CPU
PIN
NAME I/O
NO.
1 DQ1 I/O 8 bit INPUT/OUTPUT PORT
2 DQ0 I/O 8 bit INPUT/OUTPUT PORT
3 ~W I/O 8 bit INPUT/OUTPUT PORT
4 ~R I/O 8 bit INPUT/OUTPUT PORT
5 A0 I/O 8 bit INPUT/OUTPUT PORT
6 S0 I/O 8 bit INPUT/OUTPUT PORT
7 ~IBF0 I/O 8 bit INPUT/OUTPUT PORT
8 OBF0 I/O 8 bit INPUT/OUTPUT PORT
9 CNVSS/VPP I POWER SUPPLY
10 ~RESET I RESET INPUT
11 P51 I/O 8 bit INPUT/OUTPUT PORT
12 P50 I/O 8 bit INPUT/OUTPUT PORT
13 VSS POWER SUPPLY
14 XIN I CLOCL INPUT
15 XOUT O CLOCK OUTPUT
16 VCC POWER SUPPLY
17 AVCC ANALOG POWER SUPPLY
18 LPF O ROOP FILTER
19 AVSS I/O 8 bit INPUT/OUTPUT PORT
20 P44 I/O 8 bit INPUT/OUTPUT PORT
21 P43 I/O 8 bit INPUT/OUTPUT PORT
22 P42 I/O 8 bit INPUT/OUTPUT PORT
23 P41 I/O 8 bit INPUT/OUTPUT PORT
24 P40 I/O 8 bit INPUT/OUTPUT PORT
25 PB7 I/O 8 bit INPUT/OUTPUT PORT
26 PB6 I/O 8 bit INPUT/OUTPUT PORT
27 PB5 I/O 8 bit INPUT/OUTPUT PORT
28 PB4 I/O 8 bit INPUT/OUTPUT PORT
29 PB3 I/O 8 bit INPUT/OUTPUT PORT
30 PB2 I/O 8 bit INPUT/OUTPUT PORT
31 PB1 I/O 8 bit INPUT/OUTPUT PORT
32 PB0 I/O 8 bit INPUT/OUTPUT PORT
33 P37 I/O 8 bit INPUT/OUTPUT PORT
34 P36 I/O 8 bit INPUT/OUTPUT PORT
35 P35 I/O 8 bit INPUT/OUTPUT PORT
36 P34 I/O 8 bit INPUT/OUTPUT PORT
37 P33 I/O 8 bit INPUT/OUTPUT PORT
38 P32 I/O 8 bit INPUT/OUTPUT PORT
39 P31 I/O 8 bit INPUT/OUTPUT PORT
40 P30 I/O 8 bit INPUT/OUTPUT PORT
16
(XV833A00) CPU
FUNCTION
Data bus
Inter r upt request
Inter r upt request
Gr ound
Inter rupt request
Inter rupt request
Read
Wr it e
Chip enable
Test mode
Serial data
Gr ound
Power supply
Serial data
FUNCTION
PI N
NAME I/O
NO.
25 TX3 1 O
RX32 I
26
TX32 O
27
28 RX33 I
29 TX33 I /O
30 /I C I
31 VSS31
32 XI I
33 VSS33
34 XO O
35 A0 I
36 A1 I
A2 I
37
38 A3 I
39 A4 I
A5 I
40
CPU CLK I
41
42 VSS42
43 VDD43
44 D0 I/ O
45 D1 I/ O
46 D2 I/ O
D3 I/ O
47
48 D4 I/ O
PIN
NAME I/O
NO.
41 P17 I/O 8 bit INPUT/OUTPUT PORT
42 P16 I/O 8 bit INPUT/OUTPUT PORT
43 P15 I/O 8 bit INPUT/OUTPUT PORT
44 P14 I/O 8 bit INPUT/OUTPUT PORT
45 P13 I/O 8 bit INPUT/OUTPUT PORT
46 P12 I/O 8 bit INPUT/OUTPUT PORT
47 P11 I/O 8 bit INPUT/OUTPUT PORT
48 P10 I/O 8 bit INPUT/OUTPUT PORT
49 PO7 I/O 8 bit INPUT/OUTPUT PORT
50 PO6 I/O 8 bit INPUT/OUTPUT PORT
51 PO5
I/O 8 bit INPUT/OUTPUT PORT
52 PO4 I/O 8 bit INPUT/OUTPUT PORT
53 PO3 I/O 8 bit INPUT/OUTPUT PORT
54 PO2 I/O 8 bit INPUT/OUTPUT PORT
55 PO1 I/O 8 bit INPUT/OUTPUT PORT
56 PO0 I/O 8 bit INPUT/OUTPUT PORT
57 P27 I/O 8 bit INPUT/OUTPUT PORT
58 P26 I/O 8 bit INPUT/OUTPUT PORT
59 P25 I/O 8 bit INPUT/OUTPUT PORT
60 P24 I/O 8 bit INPUT/OUTPUT PORT
61 P23 I/O 8 bit INPUT/OUTPUT PORT
62 P22 I/O 8 bit INPUT/OUTPUT PORT
63 P21 I/O 8 bit INPUT/OUTPUT PORT
64 P20 I/O 8 bit INPUT/OUTPUT PORT
65 P74 I/O 5 bit INPUT/OUTPUT PORT
66 P73 I/O 5 bit INPUT/OUTPUT PORT
67 P72 I/O 5 bit INPUT/OUTPUT PORT
68 P71 I/O 5 bit INPUT/OUTPUT PORT
69 P70 I/O 5 bit INPUT/OUTPUT PORT
70 USB_D+ I/O USB D+ VOLTAGE
71 USB_D- I/O USB D- VOLTAGE
72 EXT.CAP I/O LINE POWER SUPPLY
73 VSS POWER SUPPLY
74 VCC POWER SUPPLY
75 DQ7 I/O 8 bit INPUT/OUTPUT PORT
76 DQ6 I/O 8 bit INPUT/OUTPUT PORT
77 DQ5 I/O 8 bit INPUT/OUTPUT PORT
78 DQ4 I/O 8 bit INPUT/OUTPUT PORT
79 DQ3 I/O 8 bit INPUT/OUTPUT PORT
80 DQ2 I/O 8 bit INPUT/OUTPUT PORT
MAIN: IC301
FUNCTION
Serial data
Initial Clear
Gr ound
Cr ystal quar ts input
Gr ound
Cr ystal quar ts output
Address bus
Clock
Gr ound
Power supply
Data bus
MAIN: IC316
FUNCTION