CS-880H,HG,U,UC
J
[ AIWA
• The function in parentheses ¡s displayed by key operation based
on a momentary switch (marked oo ).
• Manual/auto selection (*1)
Manual/auto selection is performed by a fixed switch but in this
unit the key operations are carried out with momentary switches
which, thanks to the flip-flop circuit, have the same functions as
fixed switches.
When connected: Auto tuning
When disconnected: Manual tuning
• LCD static/dynamic selection (*2)
This determines whether the LCD display system should be
static or dynamic. In this unit, static specifications apply and so
the diode is shorted.
• IF frequency selection (*3 , *4)
Alignment is made with the FM IF frequency by IF , and IF 0
shorting and open combinations. The IF frequencies used by this
unit are 10.675 MHz, 10.700 MHz and 10.725 MHz and so the
combinations appear as follows:
1F offset frequency
IF ,
'F 0
10.675 MHz (blue)
Open
Shorted
10.700 MHz (red)
Open
Open
10.725 MHz (orange)
Shorted
Shorted
Color of ceramic filter indicated in parentheses.
• Japan/US use selection (*5)
When connected: U S specifications
When disconnected: Japan specifications
• AM frequency interval selection (*6)
The AM channel frequency intervals are selected to 10 kHz or.
9 kHz.
When connected: 10 kHz
When disconnected: 9 kHz
3-3.
LCD driver (MSM5829GS)
Indication is provided on the LCD by connecting the three
serial output data from the controller (jiPD1703C-515)
Q I
C X
C E
e x
cm
□
e
□si
□ E
OH
L S I
c
h
:
B2
C2
DP2
Dl
E l
SI
FI
A I
Bl
Cl
DPI
FI
F 2
COM
8
"
M S M 5 8 2 9 G S
DP4
m
CH
4TI
4Ö1
551
NC<
.^ ftl
a n
nfil
3 5 1
OP 5
351
C 5
3 31
B 5
ä U
A5
3TI
F5
3 0 ]
<55 2 Q
Fig. 7
Pin no.
Name
Function
8 ,9 ,1 0 ,4
5, 7 ,6 ,
5 6 ,1 ,2 ,5 2
53, 55, 54
31,32,33,27
28, 30, 29
47, 48, 50, 43
44,46,45
12,13
11.3, 51,
42, 34,
41
SEG M EN TO U T
A 1 ,B1 ,C 1 , D1
E1, F1.G1
A2, B2, C2, D2
E2, F2, G2
A5, B5, C5, D5
E5, F5, G5
A A, BA , CA, DA
EA , FA , GA
F 1 ,F2
DP1, DP2, DP3,
DP4, DP5
CH
LCD segment output pins
(see Fig. 8*)
15
V ss
Ground Pin
16
OSC
LCD AC drive frequency pin;
with this unit, the circuit is con
figured as beiow.
17
S E R IA L OUT
Not used
18
S E R IA L IN
Data indicated with shift regis
ter data input pins are fed into
this pin in synchronization with
clock pulses. (Connected to pin
19 of controller IC)
19
CLOCK
Sync, input pin when data is fed
into, or fed out of shift register.
(Connected to pin 9 of control
ler IC)
20
LOAD
Input pin for latching shift
register contents.
High: Shift register contents are
transmitted to decoder.
Low: Final contents at high
level are held (Connect
ed to pin 10 of controller
IC)
21,49
V
d d
Power supply pin
22
BI/RBO
Not used
23
SELEC T
This function is not used and so
pin is always at high level or, in
other words, it is connected to
V DD-
24
R BI
Pin for determining whether or
not leftmost display digit is to
indicate a numeral or not. In
this unit, it displays only signifi
cant figures and so it is used at
the low level, or in other words,
it is connected to Vgs (ground).
25
R ESET
Pin for switching display to
segment or dot; since segment is
used in this unit, it is set to high
level or, in other words, it is
connected to V
d d
*
26
COM
This pin feeds out an output
with the reverse phase to that of
COM. In this unit, it is not used
for direct display but for AM
and FM +B selection as men
tioned later.
14
COM
This pin feeds out a signal with
the reverse phase to that of out
put and 7 segments for AC
drive of the LCD; it drives the
LCD common pin.
35, 36, 37
38, 39, 40
Not used
DP 2 { I
m
EMOI
DP4 { I FM I---
DP3 { I MW I--
p
F I
PIN
(PIN @ >
AA
I
GA
P
u
A2
\
G2
P
u
A I
X
Gt
CH A 5 ~ F5
I
c h
] £
- T
k h
T I
LCD D ISPLA Y
Fig. 8
24
