FUNCTION OF MICOM IC
10-4. PIN DESCRIPTION
PINPIN NAMEDESCRIPTIONI/O
1XINCONNECTION TO 4.5 MHz CRYSTALI
80XOUTO
78EO1OUTPUT COMPARED WITH 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.
71EO3OUTPUT TERMINAL FOR AM 2ND CHANGE PUMP.O
(IF STANDARD FREQUENCY OF AM IS 90kHZ)
--REFER TO ATTACHED PAGE.
76VSSPOWER TERMINAL
73,31VDD
75FMININPUT TERMINAL IF FM VCO (LOCAL OSCILLATION)I
INPUT RANGE:
74AMININPUT TERMINAL IF AM VCO (LOCAL OSCILLATION)I
INPUT RANGE:
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 : 107MHz + 30kHz, Vpp=
69LCTRINPUT TERMINAL OF AM IF COUNTI
INPUT RANGE : 450kHz + 1kHz (AM)
: 450kHz + 0.37kHz (LW)
Vpp=
68SNS_PART THAT CHECKS DAMAGE OF BACK-UP MEMORY AFTERI
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-
53O
54NCNCO
55O
41 |
ACEC
