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R-SG7/SG7G
6-2 Pin description
Pin No.
Pin Name
1~7
7G~1G
8
VDD
9
E2PROM SCL
10
E2PROM SDA
11,12
NC
13
A CLASS ON
14
SEL STB
15
SEL/PLL/CLK
16
SEL/PLL/DATA
17
RESET
18
CE
19
PLL DO
20
AVss
21
PLL CE
22
T MUTE
23
STEREO
24
SD
25
VOL SCL
26
VOL DATA
27
LEVEL IN
28
S LEVEL
29
A Vdd
30
A VREF
31
CLOCK
32
CLOCK
33
Vss
34
MAIN COLCK
35
MAIN COLCK
36
S DATA
37
S BUSY
38
H.P. MUTE
39
ATT
40
A MUTE
41
LOW RELAY
42
HI RELAY
43
SP RELAY
44,45
NC
46
PROTECTION
47
REMOCON
48
IC(VPP)GND
49
CLASS A LED
50
BIAS A MID
51
BIAS B HI
52
Vdd
53
ENC A
54
ENC B
55
HEAD PHONES
56,57
-
58~60
KR2~KR0
61~64
P16~13/KS3~0
65~70
P12~P7
71
VLOAD
72~77
P6~P1
78
NC
79,80
9G,8G
6
CIRCUIT DESCRIPTION
I/O
Description
O
FL grid7~1.
-
Microprocessor power supply (+5V).
I
E2PROM control clock.
I/O
E2PROM control data.
-
Unused.
O
POWER ON/OFF control signal.
O
Strobe signal of selector IC.
O
Control clock of SEL/PLL IC.
O
Control data of SEL/PLL IC.
I
Reset signal of microprocessor.
I
Detection signal input for AC OFF.
I
PLL IF count data.
-
A/D power supply(GND).
O
Chip enable control of PLL IC.
O
Output terminal of muting signal for TUNER.
I
Stereo signal input for TUNER.
I
Synchronized signal detection input.
O
Control clock of E. volume IC.
O
Control data of E. volume IC.
I
Volume level input.
I
Signal level input.(E/T type only)
-
A/D power supply(+5V).
-
A/D reference voltage(+5V).
-
32.768kHz oscillator.
-
32.768kHz oscillator.
-
Microprocessor power supply(GND).
-
4.19MHz oscillator.
-
4.19MHz oscillator.
I/O
16 bit system data.
I/O
16 bit system busy.
O
Muting signal input of headphones.
O
Attenuator control.
O
Audio muting signal control.
O
Amplifier low relay control.
O
Amplifier high relay control.
O
Speaker relay control.
I
Unused.
I
Detection signal input of protection.
I
Remote control input.
-
Connected to VSS.
O
Control signal output of class A LED.
O
Bias control signal(MID) output.
O
Bias control signal(HI) of class A LED.
-
Microprocessor power supply(+5V).
I
Volume encoder (A) input.
I
Volume encoder (B) input.
I
Detection signal input of headphones.
O
Unused.
I
Key return input(KR2~KR0).
O
FL segment(6~13)/key scan(KS3~KS0).
O
FL segment(12~7) control.
-
FL driver power supply(-30V).
O
FL segment(6~1) control.
-
Unused.
O
FL grid(9G,8G) control.
Active
H : ON
L : OFF
L : Reset
L : ON
L : ON
L : Stereo ON
L : CE
H : ON
L : OFF
H : BUSY
L : READY
L : ON
L : ON
L : ON
H : ON
L : OFF
H : ON
L : OFF
H : ON
L : OFF
L : ON
H : ON
L : OFF
H : Key ON
H : ON
H : ON
H : ON
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