Sharp XL-HP707 Manuel de service télécharger pdf (Page 48)

XL-HP707

8 – 6

IC601 VHiLC75341/-1: Audio Processor (LC75341)

IC601 VHiLC75341/-1: Audio Processor (LC75341)

Pin No. Terminal Name Function

1 DI Serial data and clock input pin for con-

trol.

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 capacitor

and resistor connection pin.

7 LIN Volume + equaliser 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 + equaliser output pin

19 RTRE Treble band filter comprising capacitor

and resistor connection pin.

20 RBASS Bass band filter comprising capacitor

and resistor connection pin.

21 ROUT Bass band filter comprising capacitor

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 counter-

measure against power ripple.

23 VDD Supply pin

24 CLK Serial data and clock input pin for con-

trol.

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

Tape

Video

Figure 3 BLOCK DIAGRAM OF IC

1 2 ... 43 44 45 46 47 48 49 50 51 52 53 ... 67 68

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