Daewoo AKF-0305 Series, Руководство по обслуживанию

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31
FUNCTION OF MICOM IC
10-2. PIN DESCRIPTION
PIN
1
80
78
77
71
76
73
31
75
74
72
70
69
68
67
79
51
50
PIN NAME
XIN 4.5MHz CRYSTAL
PHASE COMPARISON OUTPUT PORT
If the frequency of the partial oscillation is higher than the basic
frequency, these output high, lower than the basic frequency, output
low. Otherwise, these are high-z that those frequencies correspond.
AM 2 nd CHARGE PUMP OUTPUT PORT.
(AM FREQUENCY : 90kHz)
CAN BE SUPPLIED UP TO 6.5V
FM VCO INPUT (the signal of the partial oscillation)
*
INPUT RANGE : 0.07~1.5 Vrms
*
INPUT RANGE : 0.07~1.5 Vrms
Outputs the pll lock up signal to lock up the pll frequency in
high speed.
FM IF COUNT INPUT
*
INPUT RANGE : 10.7MHz
+
30kHz, Vpp=0.07~1.5Vrms
AM IF COUNT INPUT
*
INPUT RANGE : 450kHz
+
1kHz (AM)
: 450kHz
+
0.37kHz (LW)
*
Vpp = 0.07 ~1.5Vrms
To check if the memory state is normal on the back-up mode.
The application circuit is illustrated on the note of back pages.
To check if it is back-up mode(LOW) or normal operation state(HIGH),
but it display clock depending on the clock option.
Connect to ground.
Dm-21 loading motor control port.
MTR1 MTR2
LOADING : HIGH LOW
EJECT : LOW HIGH
STOP : LOW LOW
AM VCO INPUT (the signal of the partial oscillation)
XOUT
E01
E02
E03
VSS
VDD
VDD
FMIN
AMIN
SUBPD
HCTR
LCTR
SNS_
HOLD_
TEST1
TEST2
PL1
PL2
DESCRIPTION I/O
I
O
O
O
O
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--
I
I
O
I
I
I
I
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O
O