FUNCTION OF MICOM IC
9-2. PIN DESCRIPTION
PINPIN NAMEDESCRIPTIONI/O
1XIN4.5MHz CRYSTALI
80XOUTO
78E01PHASE COMPARISON OUTPUT PORTO
77If the frequency of the partial oscillation is higher than the basicE02O
frequency, these output high, lower than the basic frequency, output
low. Otherwise, these are high-z that those frequencies correspond.
71E03AM 2 nd CHARGE PUMP OUTPUT PORT.O
(AM FREQUENCY : 90kHz)
76VSSCAN BE SUPPLIED UP TO 6.5V--
73VDD--
31VDD--
75FMINFM VCO INPUT (the signal of the partial oscillation)I
* INPUT RANGE : 0.07~1.5 Vrms
74AMINAM VCO INPUT (the signal of the partial oscillation)I
* INPUT RANGE : 0.07~1.5 Vrms
72SUBPDOutputs the pll lock up signal to lock up the pll frequency inO
high speed.
70HCTRFM IF COUNT INPUTI
* INPUT RANGE : 10.7MHz + 30kHz, Vpp=0.07~1.5Vrms
69LCTRAM IF COUNT INPUTI
* INPUT RANGE : 450kHz + 1kHz (AM)
: 450kHz + 0.37kHz (LW)
* Vpp = 0.07~1.5Vrms
68To check if the memory state is normal on the back-up mode.SNS_I
The application circuit is illustrated on the note of back pages.
67To check if it is back-up mode(LOW) or normal operation state(HIGH),HOLD_I
but it display clock depending on the clock option.
79TEST1Connect to ground.--
2TEST2--
51PL1Dm-21 loading motor control port.O
50PL2MTR1 MTR2O
LOADING : HIGHLOW
EJECT : LOWHIGH
STOP : LOWLOW
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ACEC
