Pt2314 3d2p64

Princeton Technology Corp.

Tel : 886-2-29162151 Fax : 886-2-29174598 URL: http://www.princeton.com.tw

4-Channel Input Audio Processor IC

PT2314

Description PT2314 is a four-channel input digital audio processor utilizing CMOS Technology. Volume, Bass, Treble and Balance are incorporated into a single chip. Loudness Function and Selectable Input Gain are also provided to build a highly effective electronic audio processor having the highest performance and reliability with the least external components. All functions are programmable using the I2C Bus. The pin assignments and application circuit are optimized for easy PCB layout and cost saving advantage for audio application.

Features ! ! ! ! ! ! ! ! ! ! ! ! !

CMOS Technology Least External Components Treble and Bass Control Loudness Function 4 Stereo Inputs with Selectable Input Gain Input/Output for External Noise Reduction System/Equalizer 2 Independent Speaker Controls for Balance Control Independent Mute Function Volume Control in 1.25 dB/step Low Distortion Low Noise and DC Stepping Controlled by I2C Bus Micro-Processor Interface Available in 28 Pins, DIP/SO Package

Applications ! !

Car Stereo (Audio) Hi-Fi Audio System

Note: Purchase of I2C Component of Princeton Technology Corporation (PTC) conveys a license under Philips I2C Patent Right to use these components in any I2C System, provided that the system conforms to the I2C Standard Specification defined by Philips

PT2314 v1.1

Page 1

Revised March 1999

Princeton Technology Corp.

Tel : 886-2-29162151 Fax : 886-2-29174598 URL: http://www.princeton.com.tw

4-Channel Input Audio Processor IC

PT2314

Pin Configuration VDD AGND T R E B _L T R E B _R R IN ROUT LO U D _ R R IN 4 R IN 3 R IN 2 R IN 1 LO U D _ L LIN 4 LIN 3

28 27 26 25 24 23 22 21 20 19 18 17 16 15

1 2 3 4 5 6 7 8 9 10 11 12 13 14

REF CLK D ATA DGND O U T_ L O U T_ R BOUT_R B IN _ R BOUT_L B IN _ L LO U T LIN LIN 1 LIN 2

P T 23 14

Order Information Valid Part Number PT2314-D PT2314

PT2314 v1.1

Package Type 28 Pins, DIP (300 mil) 28 Pins, SO (300 mil)

Page 2

Revised March 1999

Princeton Technology Corp.

Tel : 886-2-29162151 Fax : 886-2-29174598 URL: http://www.princeton.com.tw

4-Channel Input Audio Processor IC

PT2314

Application Circuit R2 5 .6 K C 11 2 .2 u

C13 1 0 0n

+ C5 2 .2 u

11 R IN 1

A M /F M Tu ner

26

25 + R

27

D G N D D ATA C L K

18

17

12

LOUT

L IN

LO U D _L

20 BO U T_L

C19 2 .7 n

C17 1 0 0n

C16 1 0 0n

MCU

19

3

B IN _L

TR EB _L 10u C20

+ R 1 6 L IN 1

C 1 2 .2 u C 6 2.2 u+ R CD P lay er

O U T_R

+ 10

R IN 2

15

L IN 2

9

R IN 3

+ R

PT2314

C 2 2 .2 u + R C 7 2 .2 u + R

Tape

23

1 4 L IN 3

10u C21 O U T_L

24 +

C 3 2 .2 u + R 8 A ux

R IN 4

C 8 2+.2 u C 4 2 .2 u

R

1 3 L IN 4 VDD

AGND

1

2

REF 28 +

VDD

22u C9

ROUT 6

R IN 5

LO U D _R 7

B O U T_R 22

B IN _ R 21

TREB_R 4

+ 2 .2 u C10

1 0 0n C12

1 0 0n C14

1 0 0n C15

2 .7 n C18

5 .6 K R1

Note: 1. It is suggested that you use Mylar Capacitor for capacitors, C12 ~ C19. 2. 3.

PT2314 v1.1

Resistor ( R ) Range = 2.0 K Ohms to 3.6 K Ohms Recommended Value of Resistor ( R ) = 2.4 K Ohms

Page 3

Revised March 1999