Yamaha DSP-AX2 Service Manual page 35

Yamaha av amplifier service manual
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IC501 : YSS928 (DSP P.C.B.)
AC3D3
No.
Name
I/O
111
RAMA5
O
Sub DSP: External memory address terminal 5
112
RAMA2
O
Sub DSP: External memory address terminal 2
113
SELI13
I+
Built-in selector input 13
114
SELI12
I+
Built-in selector input 12
115
SELI11
I+
Built-in selector input 11
116
SELI10
I+
Built-in selector input 10
117
SELI9
I+
Built-in selector input 9
118
RAMA4
O
Sub DSP: External memory address terminal 4
119
RAMA3
O
Sub DSP: External memory address terminal 3
120
RAMA9
O
Sub DSP: External memory address terminal 9
121
RAMA10
O
Sub DSP: External memory address terminal 10
122
RAMA11
O
Sub DSP: External memory address terminal 11
123
VSS
Ground terminal
124
VDD2
+2.5V power terminal (for internal circuit)
125
SELI8
I+
Built-in selector input 8
126
SELI7
I+
Built-in selector input 7
127
SELI6
I+
Built-in selector input 6
128
SELI5
I+
Built-in selector input 5
129
RAMA12
O
Sub DSP: External memory address terminal 12
130
RAMA13
O
Sub DSP: External memory address terminal 13
131
RAMA14
O
Sub DSP: External memory address terminal 14
132
RAMA15
O
Sub DSP: External memory address terminal 15
133
RAMA16
O
Sub DSP: External memory address terminal 16
134
RAMA17
O
Sub DSP: External memory address terminal 17
135
OVFB/END
O
Sub DSP: Overflow/program end detect terminal
136
ZEROFLG
O
Main DSP: Zero flag output terminal
137
VSS
Ground terminal
138
NONPCM
O
Main DSP: Non-PCM data detect terminal
139
DTSDATA
O
Main DSP: DTS data detect terminal
140
AC3DATA
O
Main DSP: AC3 data detect terminal
141
MUTE
O
Main DSP: Auto mute detect terminal
142
KARAOKE
O
Main DSP: AC3 KARAOKE data detect terminal
143
VDD1
+3.3V power terminal (for terminal section)
144
SURENC
O
Main DSP: AC-3 2/0 mode Dolby surround encode input detect terminal
145
CRC
O
Main DSP: AC3 CRC error detect terminal
146
/LOCK
O
DIR: PLL lock detect terminal
147
DIRINT
O
DIR: Interrupt output terminal
148
/CS
Is
Microprocessor interface chip select input terminal
149
SO
Ot
Microprocessor interface data output terminal
150
SI
Is
Microprocessor interface data input terminal
151
SCK
Is
Microprocessor interface clock input terminal
152
/IC
Is
Initial clear input terminal
153
IPINT
O+
Interrupt output terminal by IPORT 8-14
154
SELI4
I+
Built-in selector input 4
155
VSS
Ground terminal
156
SELI3
I+
Built-in selector input 3
157
SELI2
I+
Built-in selector input 2
158
TESTXI
I
Test terminal (should be always connected to VSS)
159
TESTXO
O
Test terminal
160
VDD2
+2.5V power terminal (for internal circuit)
Is: Schmidt trigger input terminal
I+: Input terminal with pull-up resistor
O: digital output terminal
Ot: Tri-state digital output terminal
A: Analog terminal
Function
DSP-AX2
(AC3RF)
(CXE)
(Unconnected)
(Unconnected)
(CXB)
(Unconnected)
(Unconnected)
(Unconnected)
(CXA)
(Unconnected)
(OPTF)
(OPTE)
(Unconnected)
(Unconnected)
(Unconnected)
(Unconnected)
(Unconnected)
(Unconnected)
(Unconnected)
(Unconnected)
(Unconnected)
(Unconnected)
(Unconnected)
(Unconnected)
(Unconnected)
(Unconnected)
(CSY)
(SDM)
(/ICD)
(OPTD)
(OPTC)
(OPTB)
(Unconnected)
34

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