Integra NAC-2.3 Service Manual page 33

Audio network receiver
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DESCRIPTION OF MAIN MICROPROCESSOR - 2
Q7001, M30624FGAFP
No.
Symbol
I/O
57
VOLSTB
O
58
-
O
59
AMUT
O
60
TUMUT
O
61
-
O
62
VCC
63
SPRLY
O
64
VSS
65
-
O
66
~STEREO
I
67
~SD
I
68
PLLCL
O
69
PLLCS
O
70
PLLDA
O
71
RDSSIG
I
72
RDSDA
I
73
~RTCINT
I
74
FLBUSY
I
75,76
-
O
77
~SELA
O
78
~SELB
O
79
FLWR
O
80
~FLSEL
O
81
FLDA7
O
82
FLDA6
O
83
FLDA5
O
84
FLDA4
O
85
FLDA3
O
86
FLDA2
O
87
FLDA1
O
88
FLDA0
O
89
RDSEN
I
90
AREA2
I
91
AREA1
I
92
HPDET
I
93
-
O
94
MODEL
I
95
KEY1
I
96
AVSS
97
KEY0
I
98
VREF
I
99
AVCC
100
-
O
Act.
Description (Function)
H
Strobe ofTC9412 volume IC
-
H
Analog muting
H
Tuner muting
-
Power supply, 5V
H
Speaker relay
GND
-
L
Detect STEREO of tuner
L
Detect SD of tuner
CLK
PLL clock of tuner
H
To select of PLL of tuner
H
PLL data of tuner
H
RDS signal
H
RDS data
L
Interruption signal (1Hz) from RTC IC
L
FL tube busy
-
L
TC4052 function change, the reversal output terminal of A
L
TC4052 function change, the reversal output terminal of B
H
FL tube WR
L
FL tube ~SEL
H
FL tube data 7
H
FL tube data 6
H
FL tube data 5
H
FL tube data 4
H
FL tube data 3
H
FL tube data 2
H
FL tube data 1
H
FL tube data 0
H
To select of RDS function
H
Local setting 2
H
Local setting 1
H
Detect headphone (Insert : "H")
-
H(AD) Model setting
AD
Key 1
A/D convertor power supply, connect to VSS
AD
Key 0
Reference voltage of A/D convertor
A/D convertor power supply, connect to Vcc
-
NAC-2.3

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