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+ 1C601 SYSTEM CONTROLLER (uPD75108CW-A76) PIN FUNCTION
%1
Rotary encoder ratation detect
play changes cyclically as follows.
WIN 4.0 ms
> Fully lit > Partially lit — Not Nee
The output ports change as follows.
%2 When the | DISPLAY MODE | key is pressed, the FL dis-
| ST-S770ES
Description
PURE LED (D701) ON/OFF output. "H": ON (stop mode)
FL indicator tube grid control output (center grid 2G) (#2)
FL indicator tube grid control output (both sidesgrid 1G, 3G) (#2)
% When
the } BAND|
key is pressed, the output ports
change cyclically as shown in the table below.
Pin No.|
Pin Name
|I/O| ACTIVE
Description
Pin No.}
Pin Name | I/O | ACTIVE
1
CLOCK
|
H
Stop mode control input.
36
ha
H
MW/LW select output, "H": MW, "L": LW
START
(1) When there is no key input continuously for 2 seconds and
37
PURE
O
H
the —
iciba Nese ee
Seals in the state
38
|LATCH1
O
H
FL driver (IC701) latch output
SURE ein) as nF sau eat anes SRG
T R e
39
|LATCH2
| O
H | FL driver (IC702) latch output
(2) When there is a key input, f releases the stop mode.
= 40
| LATCH 3
O
H
FL driver (1C703) latch output
PURE (pin 37) goes "L".
41
| GRID
0
L
2 | N.C.
|
Not used.
42
|DIMMER
| O
L
3
|REMOCON | || _f {_ | Remote control signal input.
43 + 44 | DIODE
0
H
Diode switch output.
4
|R1
|| _f |_| Rotary encoder rotation detect input (#1)
45
[RESET
L.
System RESET input. "L": RESET
5
|R2
Rotary encoder rotation detect input (#1)
X2
O
Clock output
6
|AUTOSTOP|
|
&
Auto stop signal input from IC251. "L": when signal detect
47
|x
Clock input (4.19 MHz)
7
48 -55| KEY DI(S1)|
O
H
Key matrix output
.
N.C.
|
Not used.
56-59|KEYINPUT|
|
H | Key matrix input
9
|PGM
L
PROGRAM switch (S661) input. "L": PROGRAM
60 - 63 |LEDA-LEDD|
O
Not used (pull down)
10
| KEY LOCK
|
L
PROGRAM switch (S661) input.
"L": KEY LOCK
re
Power supply terminal (GND)
11
F-MUT
0
H
FM MUTING output.
"H": MUTE
12
| TUN
O
H
FM MUTING SENS select output. "L": STOP, "H": TUNING
13
| TUN
O
L:
AM muting output. "H": STOP, "L": TUNING
14
| LATCH
O
H
Signal meterdriver (IC705) latch output.
15
| NLC.
I
16
| DATA
QO
H
Display data output to FL driver (IC501, 701 - 703, 705)
17.
| CLK
O
L
Data transfer clock output to FL driver (IC501, 701 — 703, 705)
18
| POWER
I
H
Power down detect input "H": normal, "L": power down
19 — 22) SST4-SST1|
O
H
Not used (pull up)
ANT
O
L
FM antenna select output. "L": antenna "A". "H": antenna "B"
24
| RF MODE
O
H
Antenna attenuator ON/OFF output.
"L": through, "H": ATT
25
| S-NAR
O
H
Not used (pull up)
26
|W/N
O
H
Wide/Narrow select output. "L": WIDE, "H": NARROW
27 +| FILTER
oO
H
Not used (pull up)
28
| BLD
O
H
Not used (pull up)
29
| HI-B
@)
H
HIGH BLEND switch (Q306) control! output.
30 | MONO/AUTO|
O
H
Auto stereo select switch. "H": AUTO STEREO
31
Not used.
32
| VoD
-
Power supply terminal (+5V)
33
| MUT
O
H
Line mute output. "H": MUTE
34 | CAL
O
L
CAL TONE ON/OFF output. "L": CAL TONE
35
|F/A
O
H
Not used (open)
* TEST MODE
When the | SHIFT | key is held depressed and the
power is turned on, all segments in the FL display
light while the key is held, so simple checking can
be done.
a std
li
Clockwise
Counterclockwise
FM
MW
LW
as a oa
nr a
41 pin GRID
42 pin DIMMER
When the | SHIFT | key is released, normal opera-
tion is restored.
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