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JVC KS-FX772R Service Manual page 27

Cassette receiver
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KS-FX772R
LC75823W (IC651) : LCD driver
1. Pin Layout & Symbol
2. Pin Function
Pin No.
Symbol
1 to 2
NC
3 to 52
S1 to S52
53 to 55
COM1 to COM3
56
VDD
57
INH
58~60
NC
61
OSC
62
CE
63
CLOCK
64
DATA
1-28
S49
S50
S51
S52
COM1
COM2
COM3
INH
OSC
CE
CLOCK
DATA
I/O
--
Non connected
O
Segment output pins used to display data transferred
by serial data input.
O
Common driver output pins. The frame frequency is given
by : t0=(fosc/384)Hz.
--
Power supply connection. Provide a voltage of between
4.5 and 6.0V.
I
Display turning off input pin.
INT="L" (Vss) ----- off (S1 to S52, COM1 to COM3="L"
INT="H" (VDD)----- on
Serial data can be transferred in display off mode.
--
Non connected
I/O
Oscillator connection.
An oscillator circuit is formed by connecting an external
resistor and capacitor at this pin.
Serial data
interface connection
I
to the controller.
S32
S31
S30
S29
S28
S27
S26
S25
S24
S23
S22
S21
S20
S19
S18
S17
Function
CE : Chip enable
CLOCK : Sync clock
DATA : Transfer data

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