– 43 –
Pin No. Pin Name I/O Function
38 DVCC —
Power supply terminal (+5V) (for D/A converter)
39 DVSS —
Ground terminal (for D/A converter)
40, 41
NCO
O
Not used (open)
42 AVCC —
Power supply terminal (+5V) (for A/D converter)
43 AVRH
I Reference voltage (+5V) input terminal (for A/D converter)
44 AVRL
I Reference voltage (0V) input terminal (for A/D converter)
45 AVSS —
Ground terminal (for A/D converter)
46 KEYIN0
I
Key input terminal (A/D input) (LSW901 to LSW903, S901, LSW905, LSW906)
OFF, SOURCE, MODE *, SEEK/AMS = 0 – + ) +, SOUND, SHIFT keys
input
47 KEYIN1
I
Key input terminal (A/D input) (LSW921 to LSW923, LSW925 to LSW933)
6, PRESET DISC –/+, AF/TA, PTY, DSPL, 6, 5, 4 n, 3 PLAY MODE, 2 SET UP, 1 N
keys input
48 RC-IN0
I Rotary remote commander key input terminal (A/D input)
49 DSTSEL I
Destination setting terminal (AEP and UK models: fixed at “L”, German model: fixed at “H”)
50 NOISE DET I
Noise level detection signal input at SEEK mode (A/D input)
51 D-BASS
I D-BASS switch (S981) input terminal (A/D input)
52 MTP
I Multi-path detection signal input from the RDS decoder (IC51)
53
VSM I
FM and AM signal meter voltage detection input from the FM/AM tuner unit (TU1)
(A/D input)
54 VCC —
Power supply terminal (+5V)
55 RAMBU I
Internal RAM reset detection signal input terminal
Input terminal to check that RAM data are not destroyed due to low voltage
This checking is made within 100 msec after reset Fixed at “H” in this set
56 POWSEL
I Power select switch (S501) input terminal “L”: off (halt mode), “H”: on (operation mode)
57 NCO O
Not used (open)
58 TESTIN
I Setting terminal for the test mode “L”: test mode, Normally: fixed at “H”
59 DOOR-IND
O
LED drive signal output of the door indicator “H”: LED on
“H” is output to turn on LED when front panel is opened Not used (open)
60 EVOL MUTE O
Muting control signal output to the electrical volume (IC401)
Volume minimum: “∞” output (“H” active)
61 COLR SW I
Setting terminal for the illumination color
“L”: 2 colors, “H”: 1 color (fixed at “L” in this set)
62 COLR SEL I
Setting terminal for the illumination color “L”: amber, “H”: green (fixed at “L” in this set)
63 VSS —
Ground terminal
64 NCO
O Not used (open)
65 MUTE
O Audio line muting on/off control signal output terminal “H”: muting on
66, 67 NCO
O Not used (open)
68 AMP MUTE
O Muting on/off control signal output to the power amplifier (IC611) “L”: muting on
69
FLASH-W
I
Internal flash memory data write mode detection signal input terminal “L”: data write mode
Not used (fixed at “H” in this set)
70 I2C SIO I/O
Two-way data bus with the RDS decoder (IC51) and electrical volume (IC401)
71 I2C CKO O
Bus clock signal output to the RDS decoder (IC51) and electrical volume (IC401)
72 RC-IN1
I Rotary remote commander shift key input terminal “L”: shift
73 X1A O
Sub system clock output terminal (32.768 kHz)
74 X0A I
Sub system clock input terminal (32.768 kHz)
75 DAVN I
Data transmit completed detect signal input from the RDS decoder (IC51) “H” active
76 KEYACK
I
Input of acknowledge signal for the key entry Acknowledge signal is input to accept function
and eject keys in the power off status On at input of “H”
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