Sharp CD-DK890N Service Manual download pdf (Page 67)

CD-DK890N

8 – 6

IC601 VHiLC75341/-1: Audio Processor (LC75341)

Pin No. Terminal Name Function

1 DI Serial data and clock input pin for

control.

2 CE Chip enable pin.

Data written into an internal latch in

a timing of "H" to "L".

Each analog switch is activated.

Data transfer enabled at "H" level.

3 VSS Ground pin.

4 LOUT Bass band filter comprising

capacitor and resistor connection pin

and bass/treble output pin.

5 LBASS Bass band filter comprising capacitor

and resistor connection pin.

6 LTRE Treble band filter comprising capaci-

tor and resistor connection pin.

7 LIN Volume + equalizer output pin.

8 LSEL0 Input selector output pin.

9-12 L4-1 Input signal pin.

Pin No. Terminal Name Function

13-16 R1-4 Input signal pin.

17 RSEL0 Input selector output pin.

18 RIN Volume + equalizer output pin

19 RTRE Treble band filter comprising capaci-

tor and resistor connection pin.

20 RBASS Bass band filter comprising capaci-

tor and resistor connection pin.

21 ROUT Bass band filter comprising capaci-

tor and resistor connection pin and

bass/treble output pin.

22 VREF 0.5x VDD voltage generation block

for analog ground. Capacitor of sev-

eral 10µF to be connected between

VREF and AWSS (VSS) as a coun-

termeasure against power ripple.

23 VDD Supply pin

24 CLK Serial data and clock input pin for

control.

19

20 21

22

23

24

1

2

3

45678

9

10

11

12

13

14

15

16

1817

LVref

RVref

CONTROL

CIRCUIT

CONTROL

CIRCUIT

CONTROL

CIRCUIT

LOUT

LBASS

LIN

LSEL0

L4

L3

L2

L1

R1

R2

R3

R4

RSEL0

RIN

RTRE

LTRE

RBASS

ROUT

VREF

VDD

CLK

DI

CE

VSS

CCB

INTERFACE

CD

Tuner

Tap e

Video

Figure 8-3: BLOCK DIAGRAM OF IC

1 2 ... 62 63 64 65 66 67 68 69 70 71 72 ... 88 89

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