NJW2303(2003) 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJW2303
(Rev.:2003)

BASE BAND INTERFACE IC

Japan Radio Corporation  

■ SWITCHING PIN FUNCTION

PIN NO. PIN NAME

SWITCHING FUNCTION

28

PD

Power ON / OFF

29

REGSD

Microphone Regulator ON / OFF

30

SMONI

Sound Monitor Mode

31

SP / EAR Speaker, Earphone Microphone

NJW2303

LEVEL

H

L

H

L

H

L

H

L

FUNCTION

Power ON

Power OFF

Microphone Regulator ON

Microphone Regulator OFF

Limitter Circuit OFF

Limitter Circuit ON

IN1 Input, BTL Function

IN2 Input, SINGLE Function

■ RINGER OUTPUT

PIN NO. PIN NAME

21

RINOUT 1

22

RINOUT 2

23

RINOUT 3

RINGER OUTPUT LEVEL

SMALL

MEDIUM

LARGE

RINCNT2 (27pin)

L

H

H

RINCNT1 (26pin)

H

L

H

■ PIN INFORMATION

PIN

PIN NAME

1

MICREF

2

POWREF

3

MICIN 1

4

MICIN 2

5

MICIN 3

6

MICOUT

7

SGND

8

POWIN 1

9

POWIN 2

10 POWIN 3

11 POWFB

12 CRECT

13 TC 1

14 NRREF

15 NRCNT

16 TC2

NR : Noise Reduction

FUNCTION

Mic. Amplifier Reference

Power Amplifier Reference

Mic. Amplifier Input 1

Mic. Amplifier Input 2

Mic. Amplifier Input 3

Mic. Amplifier Output

System Ground

Power Amplifier Input 1

Power Amplifier Input 2

Power Amplifier Input 3

Feed Back Pin

Cap. for Rectification Circuit

NR Circuit Time Constant

Reference Voltage

NR Operating Level Control

Limit Circuit Time Constant

PIN

PIN NAME

FUNCTION

17 POWOUT1

Power Amplifier Output 1

18 PGND

Power Ground

19 POWOUT2

20

V+

Power Amplifier Output 2

Power Supply

21 RINOUT 3

Ringer Output 3

22 RINOUT 2

Ringer Output 2

23 RINOUT 1

Ringer Output 1

24 DGND

Digital Ground

25 RININ

Ringer Input

26 RINCNT 1

Ringer Control 1

27 RINCNT 2

Ringer Control 2

28 PD

Power Down Control

29 REGSD

Mic. Regulator ON / OFF

30 SMONI

Sound Monitor Switching

31 SP / EAR

Speaker / Earphone Mic. SW

32 REGOUT

Regulator Output

Ver.2003-12-09

-3-

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