Yamaha SPX990 Service Manual page 12

SPX990
®
YM6007
(XF164A00)
DSP2
(Digital
Signal Processor)
PIN
NO.
NAME
I/O
FUNCTION
PIN
NO.
NAME
I/O
FUNCTION
1
DIS'
I/O
)
65
NC
2
D17
1/0
Data bus
66
COO
0
Serial control data output
3
D16
i/0
J
67
CDI
1
Serial
control data
input
4
NC
68 VOD Power
supply
5
Vdd
Power
supply
69 SIO
1
Serial
data input
(28bitx4ch)
6
D15
I/O
70 NC
7
NC
71
NC
B
NC
72
sn
1
Serial data input (28bit
x 4ch)
9
D14
i/0
73
SI2
1
Serial
data input
(28bit x 2ch)
10
NC
74
soo 0
Serial
data output (28bit x 4ch)
11
D13
I/O
75
NC
12
D12
I/O
76 SOI
0
Serial
data output
(28bitx4ch)
13
Dll
I/O
77
S02 0
Serial
data output (28bitx 2ch)
14 NC
I/O
78 SCLK 0
Clock
{64bit/sample}
1
5
DIO
79
NC
16
NC
80 NC
17
NC
81
NC
18
19
D9
D8
I/O
I/O
Data bus
82
83
NC
TRGO 0
Trigger output
20 D7
I/O
84
TRGI
1
Trigger input
21
NC
85 DCLK
1
Clock (Master clock x
21
22
D6
I/O
86 SYNC
1
Synch,
pulse
23
D5
I/O
87
1C
1
Initial
clear
24
NC
88 NC
25
D4
I/O
89
MRQ
0
Control data receival
26
NC
90
MDAO
1
27 03
I/O 91
NC
28
NC
I/O
92
NC
Serial
mode:
Internal registor select
29
02
93
MDAl
1
Parallel
mode: CDI
COO
data
format
30 01
I/O
select
31
00
I/O
94
MDA2
1
32
NC
95
NC
33
CAS
0 CAS
contfo! 96
MWE
1
MD
pin input strobe
34
0
RAS
control
97
MOE
1
MD
pin output strobe
35
A9 0
Address bus
98
MDS
1
Communication
mode
select
36 A8 0
(0; serial
1
;
parallel)
37 Vss Ground
99
MD7
I/O
38
A7 0
100
MD6
I/O
39
NC
101
NC
40 A6
0
102 NC
41
NC
103
MDS
I/O
42
43
A5
NC
0
104
105
NC
MO
4
I/O
Parallel
data
44 A4 0
106
NC
45
A3 0
107
MD3
I/O
46 NC Address bus
108
M02
I/O
47 NC
109
MD1
I/O
48 NC
110
MDO
I/O
49
NC
111
NC
50
NC
112 NC
51
NC
113
D27
I/O
52
A2 0
114 NC
53 A1
0
115
026
I/O
54
AO
0
116
NC
55
WE
0
Write control 117
025
I/O
56
OE
0
Output
enable 118 024
I/O
57
NC
119 NC
58
OBOE
i
Memory
data bus output enable 120 023
I/O
Memory
data
59 NC
121
NC Ground
60 T1M1
0
Timing
pulse
122 NC
61 TST
Test
pin
123
022
I/O
62
CRS
I/O Reset
(Serial
mode:l 124 Vss
Parallel
mode:
0)
125
NC
63 NC
126 021
I/O
64
XCLK
1
Shift
clock
for serial control data
127
020
I/O
128
019
I/O
O
O'
o-
X
a.
(/)
15