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65
HCD-GTR6/GTR6B/GTR7/GTR8/GTR8B
53
AUDIO IC CLOCK
O
Serial data transfer clock signal output to audio signal IC, R2A15216FP
54
AD SUPPLY CUT OFF
O
Micom AD Vcc supply cut off
55
MTK POWER CONTROL
I
MTK IC Power control
56
FAN ON
O
Fan on/off control port.
57
NO USE
O
Unused port (Output port setting - open)
58
ST-TUNED
I
“TUNED” input signal from Tuner pack.
59
NO USE
O
Unused port (Output port setting - open)
60
ST-CE
O
PLL chip enable signal output to the tuner unit
61
ST-DOUT (UC_DIN)
O
PLL serial data output from the tuner unit
62
VCC
–
Power supply terminal (+3.3V)
63
ST-DIN (UC_DOUT)
I
PLL serial data input to the tuner unit
64
VSS
–
Ground terminal
65
ST-CLK
O
PLL serial data transfer clock signal output to the tuner unit
66
MTK 3.3V MONITOR
I
Micom monitoring the MTK power supply pin.
67
THERMA VACS
I
Temperature detection signal input from thermistor (A/D input)
68
STBY RELAY
O
Main power on/off control signal output “H”:power on
69
OVER VOLTAGE DET
I
Over-voltage protection detection input terminal “L”: over-voltage detected
70
VACS-IN
I
Spectrum analyzer drive signal input from Audio IC signal (A/D input)
71
METER LEVEL IN
I
Audio signal level for Meter level detect (A/D input).
72
REC BIAS
O
Recording bias on/off control signal output “H”:bias on
73
POWER KEY
I
POWER key and DISPLAY key press detection signal (Interrupt input)
74
NO USE
O
Unused port (Output port setting - open)
75
REC MUTE
O
Recording muting on/off control signal output “L”:muting on
76
MIC DET
I
Mic in detect pin.
77
HP DET
I
Heahphone in detect pin.
78
CAPM-CNT
O
Capstan motor drive signal output
79
B-TRIG
O
Deck side trigger plunger drive signal output “H”:plunger on
80
B SHUT
I
Shut off detection signal input from deck A side reel pulse detector (A/D input)
81
B-HALF/REC
I
Deck B cassette detection, forward side recording tab detection and reverse side recording
tab detection signal input terminal (A/D input)
82
TC-RELAY
O
Recording/playback selection signal output “H”:recording “L”:playback
83
METER IN2
O
Meter motor control port
84
METER IN1
O
Meter motor control port
85
METER IN3
O
Meter motor control port
86
METER IN4
O
Meter motor control port
87
METER SW
I
Meter position switch (Initial & End Position) for calibration purpose.
88
AD-KEY-1
I
Key input terminal for AD key line 1.
89
AD-KEY-0
I
Key input terminal for AD key line 0.
90
AD-KEY-2
I
Key input terminal for AD key line 2.
91
MODEL-IN
I
Model setting terminal (A/D input)
92
DEST-IN
I
Destination setting terminal (A/D input)
93
OPERATION DIAL
I
Jog dial pulse input from OPERATION DIAL encoder
94
MASTER VOLUME
I
Jog dial pulse input from the VOLUME encoder
95
EEPROM CLOCK
I/O
External EEPROM memory backup (Serial Clock line)
96
AVSS
I
Ground terminal (for A/D conversion)
97
EEPROM DATA
I/O
External EEPROM memory backup (Serial Data line)
98
VREF
I
A/D Converter reference voltage input terminal (+3.3V)
99
AVCC
–
Power supply terminal (+3.3V) (for A/D conversion)
100
METER-BLUE
O
LED drive signal output of Meter backlight LED