SM6453AB(2001) Ver la hoja de datos (PDF) - Nippon Precision Circuits

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SM6453AB
(Rev.:2001)

3-wire Serial Data Volume Control for Headphone Amplifiers IC

Nippon Precision Circuits  

SM6453AB

PIN DESCRIPTION

Number

Name

I/O 1

Description

V DD

1

MLEN

Ip

Microcontroller latch enable input

2

MCK

Ip

Microcontroller clock input

3

MDT

Ip

Microcontroller data input

4

RSTN

Ip

System reset (LOW-level reset)

VDD2

5

MUTEN

I

Mute input (LOW-level mute)

6

PDN

I

Power-down mode select (LOW-level power-down)

7

BEEPI

I

Beep signal input

8

VREF1

O

Reference voltage 1

9

VREF2

O

Reference voltage 2

10

AVDD1

11

LIN1

−

EVR-stage analog VDD

I

Left-channel analog input 1

12

LIN2

13

AVSS1

14

RIN1

I

Left-channel analog input 2

−

EVR-stage analog VSS

I

Right-channel analog input 1

15

RIN2

I

Right-channel analog input 2

16

VBIAS

O

EVR-stage bias voltage

17

BEEPRO

O

Right-channel beep signal output

18

ROUT

O

Right-channel output

19

AVSS3

−

Headphone amplifier right-channel analog VSS

VDD1

20

AVDD3

−

Headphone amplifier right-channel analog VDD

21

AVDD2

−

Headphone amplifier left-channel analog VDD

22

AVSS2

−

Headphone amplifier left-channel analog VSS

23

LOUT

O

Left-channel output

24

BEEPLO

O

Left-channel beep signal output

25

BSTO

O

Bass boost auxiliary output

26

BSTN

I

Bass boost auxiliary input

27

BSTC

O

Bass boost capacitor connection

28

AGCTC

O

AGC time constant capacitor connection

29

LRMXO

O

Left + right-channel mix detector output

30

DVSS

−

Digital VSS

31

DVDD2

−

Digital VDD2

32

DVDD1

−

Digital VDD1

VDD2

1. Ip = input with pull-up

VDD1, VDD2, VSS definition:

VDD1 = DVDD2 = AVDD1 = AVDD2 = AVDD3

VDD2 = DVDD1

VSS = DVSS = AVSS1 = AVSS2 = AVSS3

NIPPON PRECISION CIRCUITS—2

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