Pioneer VSX-55TXi Service Manual page 165

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No. Pin Name
51 DAC RST
52 DSP MUTE
53 M62429 DT
54 M62429 CLK
55 EVR CS
56 EVR CLK
57 EVR DT
58 DSP HREQ1
59 DSP HREQ2
60 furniture
61 –
62 5V
63 DC PROT
64 GND
65 RC-AC
66 AMUTE
67 MRMUTE
68 tc9274f-st
69 tc9274f-ck
70 tc9274f-dt
71 TUNER CLK
72 TUNER CE
73 OL DET
74 TUNER DO
75 RDS CLK
76 TUNER DI
TE
L 13942296513
77 RDS DT
78 RDS FM+
79 TMUTE
80 STEREO
81 TUNED
82 EXP DT
83 EXP CLK
84 EXP OE
85 EXP ST
86 –
87 –
88 –
89 –
90 DEM LOCK
91 SIMUKE1
92 SIMUKE2
93 WATT-IN
94 TEMP-IN
95 FAN STOP
96 AVSS
97 –
98 VREF
99 AVCC
100 –
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I/O
O DAC/AD reset
O DSP Assy mute
O Data signal for multi room volume IC control
O Clock signal for multi room volume IC control
O Chip select signal for erectronic volume
O Clock signal for erectronic volume
O Data signal for erectronic volume
I Error detection signal of DSP1 microcomputer
I Error detection signal of DSP2 microcomputer
O Furniture control signal
O L" fixed
−
5V power supply
I DC detection L: Detection
−
Ground
O AC relay ON/OFF
O System mute L: Mute ON
O Multi room mute L: Mute ON
O Function SW control (Strobe)
O Function SW control (Clock)
O Function SW control (Data)
O Clock signal of tuner control
O Chip select signal of tuner control
I Amp. overload detection
I Data input signal of tuner control (pullup)
O L" fixed
O Data output signal of tuner control
O L" fixed
O L" fixed
O Tuner mute
I L: STEREO (pullup)
I L: TUNED (pullup)
O Data signal of expansion IC control
O Clock signal of expansion IC control
O Output enable signal of expansion IC control
O Chip clock signal of expansion IC control
O NC
O NC
O NC
O NC
I Not used
I Destination read 1
I Destination read 2
I Wattage detection Level detection with A/D
I Temperature detection Level detection with A/D
I Fan forced stop detection
−
Connect to VSS
O NC
−
Connect to VCC
−
Connect to VCC
O NC
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2 9
8
Pin Function
L: Detection
Q Q
3 6 7 1 3 1 5
co
.
VSX-55TXi
7
9 4 2 8
0 5 8 2 9 9 4 2 8
m
8
9 9
Active
A
H
B
L
H
L
L
C
L
9 9
H
L
L
D
A/D
E
A/D
H
L
F
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