Onkyo TX-SR573, Service Manual

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MICROPROCESSOR TERMINAL DESCRIPTIONS-2
Q701 : M30622MGP-293FPU0
TX-SR573
Pin No. Pin name I/O Description
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
Act.
SPRLSB
SPRLCS
SPRLF/SPRLS
DIGSDO
DIGSDI
DIGCLK
DSPBUSY
XMREQ1
XMREQ2
VPOWER
APOWER
VCC2
SEC1H
VSS
VOLH
THERMAL
PROTECT
FSWSTB
FSWCLK
FSWDAT
NU
NU
SYSIN
XMRST
NU
SYSOUT
NU
NU
LEDSTBY
NU
HPDET
NU
VOLB
VOLA
INIT3
INIT2
INIT1
BAND
KEYINT3
KEYINT2
KEYINT1
KEYINT0
KEY3
KEY2
KEY1
AVSS
KEY0
VREF
AVCC
NU
O
O
O
O
I
O
I
O
I
O
O
---
O
---
I
I
I
O
O
O
---
---
I
O
---
O
---
---
O
---
I
---
I
I
I
I
I
I
I
I
I
I
I
I
I
---
I
---
---
--
H
H
H
H
H
CLK
H
L
H
H
H
---
H
---
A/D
A/D
H
H
H
H
---
---
H
L
---
L
---
---
L
---
H
---
H
H
A/D
A/D
A/D
A/D
L
L
L
L
A/D
A/D
A/D
---
A/D
---
---
---
Surround back speaker relay control output.
Center/Surround speaker relay control output.
Front speaker relay control output.
Serial communication signal output to DIR/CODEC/DSP.
Serial communication signal input from DIR/CODEC/DSP.
Serial communication clock output to DIR/CODEC/DSP.
Busy detection signal input from DSP.
Chip request output to XM microprocessor.
Chip request input from XM microprocessor.
Mute control output to video circuit power supply.
Mute control output to audio circuit power supply.
Power supply.
Control output to power amplifier power supply.
Ground.
Speaker output level detection input.
Thermal sensor detection input.
Over current detection input for speaker protect.
Strobe output to function switch.
Serial clock output to function switch.
Serial data output to function switch.
Not used.
Not used.
System control (RI) signal input.
Reset signal output to XM microprocessor.
Not used.
System control (RI) signal output.
Not used.
Not used.
Standby LED control output.
Not used.
Phones detection signal input.
Not used.
Data input from rotary encoder (master volume).
Data input from rotary encoder (master volume).
Initial setting-3.
Initial setting-2.
Initial setting-1.
Tuner band setting.
Key input-3 (interrupt).
Key input-2 (interrupt).
Key input-1 (interrupt).
Key input-0 (interrupt).
Key input-3.
Key input-2.
Key input-1.
Ground.
Key input-0
A/D reference voltage power supply.
A/D Power supply.
Not used.