FUNCTION OF MICOM IC
10-2. PIN DESCRIPTION
PINPIN NAMEDESCRIPTIONI/O
1XINConnection to 4.5MHz CRYSTALI
80XOUTO
78EO1Output compared sith phaseO
77EO2IF LOCAL OSCILLATION FREQUENCY IS HIGHER THAN STANDARDO
FREQUENCY.
OUTPUT IS HIGH, IF NOT OUTPUT IS LOW, AND IF SAME OUTPUT
IS HIGH-Z.
71E03OUTPUT TERMINAL FOR AM 2ND CHANGE PUMP.O
(IF STANDARD FREQUENCY OF AM IS 90kHZ)
76VSSPOWER TERMINAL (VDD is to MAX 6.5V)--
73VDD--
31VDD--
75FMININPUT TERMINAL IF FM VCO(LOCAL OSCILLATION)I
* INPUT RANGE : 0.07~1.5Vrms
74AMINI
INPUT TERMINAL IF AM VCO(LOCAL OSCILLATION)
* INPUT RANGE : 0.07~1.5Vrms
72SUBPDOUTPUT OF PLL LOCK UP SUB FOR SPEEDY PLL LOCK.O
REFER TO ATTACHED PAGE ABOUT CIRCUIT USED.
70HCTRINPUT TERMINAL OF FM IF COUNTI
* INPUT RANGE : 10.7MHz + 30kHz, Vpp = 0.07~1.5Vrms
69LCTRINPUT TERMINAL OF AM IF COUNTI
INPUT RANGE : 450kHz + 1kHz (AM)
: 450kHz + 0.37kHz (LW)
Vpp = 0.07~1.5Vrms
PART THAT CHECKS DAMAGE OF BACK-UP MEMORY AFTER
68SNS_I
COMING BACK TO (BACK-UP)MODE.
REFER TO ATTACHED PAGE ABOUT CIRCUIT USED.
67HOLD_CONTROL TERMINAL OF BACK UP MODE.I
IF INPUT IS HIGH, WORKING IS NORMAL.
IF INPUT IS LOW, IT REVERTS TO BACK UP MODE.
IF INPUT OF (ACC)IN IS LOW ACCORDING TO CLOCK OPTION
CLOCK IS DISPLAYED.
79TEST1TEST PORT (CONNECTED TO GROUND)--
2TEST2--
52PL0RECEIVING RDS DATA FROM RDS DEMODULATOR IC.I
53PK3REFER TO ATTACHED PAGE ABOUT DATA TIMING CHART.O
54PK2O
55INT1O
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ACEC
