SC9235 데이터 시트보기 (PDF) - Silan Microelectronics

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SC9235

ELECTRONIC VOLUME

Silan Microelectronics 

Silan

Semiconductors

SC9235

PIN DESCRIPTION

Pin No. Symbol

Pin Name

1

Vss

Negative power supply pin

16

VDD

Positive power supply pin

2

OUT-1

Volume output pins

15

OUT-2

3

IN-1

Volume input pins

14

IN-2

4

TP-1

Tap output pins for loudness

13

TP-2

5

GND-1

Analog ground pins

12

GND-2

6

UP

Volume up input pin

7

DN

Volume down input pin

8

OSC Oscillation pin

9

INT

Initializing pin

10

INH

Inhibit terminal

11

DC-OUT DC output pin for level meter

Description

Power Supply terminal

Volume circuit

OUT

IN

TP

GND

Volume up, down control input pin.

The 1 step / 1 push volume is controlled by pushing

the Up or Down key . If the key has been pushed

continuously, the continuous volume control.

These two input pins have built-in pull-up resistor.

Oscillation pin.

Oscillator circuit consist of C.R connection.

Oscillation is executed while key is pushed.

Input pin for setting initial volume level volume level

set to 46dB by "L" input.

This input pin has built-in pull-up resistor.

Back up mode input pin.

Internal all operation is stopped by "L" input, and

volume level remains with low current consumption.

DC output pin for volume level meter.

DC voltage which is corresponded to volume step is

generated.

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0 2000.12.31

3

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