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IC BLOCK DIAGRAM & DESCRIPTION
IC413 LA2615M (Surround)
IC602 NJM4558M (Operation Amplifier)
IC425 NJM7805FA (3-Terminal Voltage Regulator)
1
2
3
5
6
7
8
4
VCC(+)
A OUTPUT
A
B
B OUTPUT
B -INPUT
B +INPUT
A -INPUT
A +INPUT
VEE(-)
IC363 BA7755A (Head Switch)
1
4
52 3
VCC
HEAD
SWITCH
CTRL1
CTRL2
GND
1
2
3
4 5 6 7 8
16
1514131211
10
9
VSS
DATA
CLOCK
Q0
Q1
Q2
Q3
Q5
Q6
Q7
Q8
Q9
Q10
VDD
CONTROL
CURCUIT
Q11
Q4
12 BIT SHIFT
RESISTOR
LATCH
OUTPUT BUFFER (OPEN DLAIN)
IC604, IC605 BU2090F (12bit Serial Parallel Converter)
No.
Pin Name Port Name
Function
1 VSS VSS Ground
2 DATA D_OUT Data input
3 CLOCK EX3_CLK Clock input
4 Q0 S20 FL-S20 control
5 Q1 LED_8 PASS_HI LED OUTPUT (L=ON)
6 Q2 LED_9 PASS_MID LED OUTPUT (L=ON)
7 Q3 LED_10 PASS_LOW LED OUTPUT (L=ON)
8 Q4 LED_11 SOUND JAZZ LED OUTPUT (L=ON)
9 Q5 LED_12 SOUND ROCK
10 Q6 LED_13 SOUND POP LED OUTPUT (L=ON)
11 Q7 LED_14 SOUND CLASSIC LED OUTPUT (L=ON)
12 Q8 LED_15 SOUND LED OUTPUT (L=ON)
13 Q9 LED_16 BASS_HI LED OUTPUT (L=ON)
14 Q10 LED_17 BASS_MID LED OUTPUT (L=ON)
15 Q11 LED_18 BASS_LOW LED OUTPUT (L=ON)
16 VDD VDD Power supply
No.
Pin Name Port Name
Function
1 VSS VSS Ground
2 DATA D-OUT Data input
3 CLOCK EX2_CLK Clock input
4 Q0 Not used
5 Q1 SUR_3 Output for Surround LSI control
6 Q2 SUR_2 Output for Surround LSI control
7 Q3 SUR_1 Output for Surround LSI control
8 Q4 LED_0 Not used
9 Q5 LED_1 DISC_3 LED OUTPUT (L=ON)
10 Q6 LED_2 CD STOP KEY LED OUTPUT (L=ON)
11 Q7 LED_3 FWD KEY LED OUTPUT (L=ON)
12 Q8 LED_4 CD PLAY KEY LED OUTPUT (L=ON)
13 Q9 LED_5 DISC_1 LED OUTPUT (L=ON)
14 Q10 LED_6 BACK KEY LED OUTPOUT (L=ON)
15 Q11 LED_7 DISC_2 LED OUTPUT (L=ON)
16 VDD VDD Power supply
IC604 BU2090F (12bit Serial Parallel Converter) IC605 BU2090F (12bit Serial Parallel Converter)
16 15 14 13 12 11 10 9
87654321
ANALOG
SURROUND
VREF
GDR GUR ACG LPFC LED VCC L-OUT R-OUT
On/Off H/L H/L GND HPFC VREF L-IN R-IN
IC371 TA8189N (Pre-Amplifier for Tape Deck)
30 29 28 27 26 25 24 23 22
21
20
123456789101112131415
19 18 17 16
CL
VDD
VREF
NC
ROUT
RBASS2
RBASS1
RTRE
RIN
RSEL0
R4
R3
R2
R1
NC
DI
CE
VSS
TEST
LOUT
LBASS2
LBASS1
LTRE
LIN
LSEL0
L4
L3
L2
L1
NC
IC458 LC75342M (Electronically controllable
electronic volume)
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