Yamaha AP-U70 Service Manual - Page 16
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AP-U70
I IC DATA
IC417 : YSS928
AC3D3
RAMA10
RAMA11
VSS
VDD2
SELI8
SELI7
SELI6
SELI5
RAMA12
RAMA13
RAMA14
RAMA15
RAMA16
RAMA17
OVFB/END
ZEROFLG
VSS
NONPCM
DTSDATA
AC3DATA
MUTE
KARAOKE
VDD1
SURENC
CRC
/LOCK
DIRINT
/CS
SO
SCK
IPINT
SELI4
VSS
SELI3
SELI2
TESTXI
TESTXO
VDD2
C
FS128/C
FS128
U
SYNC/U
SYNC
DIRINT
DDIN0
DDIN1
DDIN2
DDIN3
BS
ERR/BS
ERR
V
DBL/V
/LOCK
15
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
SI
150
151
152
/IC
153
154
155
156
157
158
159
160
CONTROL REGISTER
CONTROL SIGNAL
YSS928
MICROPROCESSOR INTERFACE
MPLOAD
SDIBCKSEL
80
RAMD2
79
RAMD1
78
RAMD0
77
VDD2
76
VSS
75
OPORT7
74
OPORT6
73
OPORT5
72
OPORT4
71
OPORT3
70
OPORT2
69
OPORT1
68
OPORT0
67
ZEROBF2L
66
ZEROBF2R
65
ZEROBF3L
64
ZEROBF3R
63
VDD1
62
SDOB0
61
SDOB1
60
SDOB2
59
SDOB3
58
VSS
57
SDBCKI1
56
SDWCKI1
55
DBL/V
54
FS128/C
53
SYNC/U
52
ERR/BS
51
DIRMCK
50
DIRBCK
49
DIRWCK
48
DIRSDO
47
IPORT14
46
IPORT13
45
IPORT12
44
VDD2
43
VSS
42
SDIB0
41
SDIB1
SELA SELB
SELOB
SELOA
COEFFICIENT
PROGRAM
RAM
SDBCKI1
SDWCKI1
SDOBCKSEL
SDOB0
SDOB1
SDOB2
SDOB3
EXTERNAL
RAM
INTERFACE
OVFSEL