Pin No. Pin Name I/O Description
Output high voltage at S-BASS operating
Tuner/clock direction “H” : tuner operation “L”: clock operation
Output CPU clock
Input CPU clock
Display test “H” : all characters turn on
“L” : battery indicator (BT3) turn on
“H” : S-BASS operate
“L” : holding key operation
IF selection “H” : IF = 10.75MHz “L” : 10.7MHz
Input supply voltage for battery indication
Input NSB signal (DC) for selection of NSB stations
Input DC for KEY operation
GND
Input power supply
67
68
69
70
71
72
73
74
75
76
77
78
79
80
DSL OUT
CLOCK/TU
X OUT
X IN
DSP TEST
BATT IND
S-BASS
HOLD
IF SELECT
BATT DSP
NSB SIG
KEY IN
GND
VDD2
O
I
O
I
I/O
O
I
I
I
I
I
I
-
-
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