Pin
No.
Port Description I/O (V)
FM AM CD
80 X1 Crystal oscillator
clock
I 2.0 2.0 2.0
81 X2 Crystal oscillator
clock
O 2.5 2.5 2.5
82 Vdd +5V power supply - 5.0 5.0 5.0
83 P00 Pulled down to L - 0 0 0
84 P01 Pulled up to H - 5.1 5.0 5.1
85 OFFSET
DET
Audio clipping level
detection from
Power amp.
I 0 0 0
86 STBY Standby for Power
amp.
O 5.0 5.0 5.0
87 AMP MUTE Mute for Power
amp.
O 0 0 0
88 ILL SENS Pulled up to H - 5.0 5.0 5.0
89 NC Not connected - - - -
90 EP DO
EPROM comuni.
data input
O/I
0 0 0
91 NC Not connected - - - -
92 NC Not connected - - - -
93 SUB
RESET
Reset for display
CPU
O 4.9 5.0 4.9
94 DISPM
CONT
5V power control
for Display
O 0 0 0
95 NC Not connected - - - -
96 NC Not connected - - - -
97 NC Not connected - - - -
98 S LED Security LED drive O 0 0 5.0
99 ANT CONT Power control for
antenna motor
O 5.2 5.2 5.2
100
EP CS(NC) Not connected - - - -
10.3. Display Block
IC900 : C2CBJH000133
13
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