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부품번호 | PT2313 기능 |
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기능 | 4-Channel Audio Processor IC | ||
제조업체 | Princeton Technology Corp | ||
로고 | |||
전체 16 페이지수
PTC Princeton Technology Corp.
4-Channel Audio Processor IC
Tel : 886-2-29162151
Fax : 886-2-29174598
PT2313
Description
PT2313 is an four-channel digital audio processor utilizing CMOS Technology. Volume,
Right/Left Bass and Treble Balance, Front/Rear Fader Processor 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 Serial Bus. The pin assignments and
application circuit are optimized for easy PCB layout and cost saving advantage for audio
application. PT2313 is housed in a 28-pin DIP/SO Package and is functionally compatible with
TDA7313.
Features
r CMOS Technology
r Least External Components
r Treble and Bass Control
r Loudness Function
r 3 Stereo Inputs with Selectable Input Gain
r Input/Output for External Noise Reduction System/Equalizer
r 4 Independent Speaker Controls for Fader and Balance
r Independent Mute Function
r Volume Control in 1.25 dB/step
r Low Distortion
r Low Noise and DC Stepping
r Controlled by Serial Bus Micro-Processor Interface
Applications
r Car Stereo (Audio)
r Hi-Fi Audio System
PT2313 v 1
Page 1
Written Feb. 1997
http://www.Datasheet4U.com
PTC Princeton Technology Corp.
4-Channel Audio Processor IC
Tel : 886-2-29162151
Fax : 886-2-29174598
PT2313
Functional Description
Bus Interface
Data are transmitted to and from the microprocessor to the PT2313 via the DATA and
CLK. The DATA and CLK make up the BUS Interface. It should be noted that the pull-
up resistors must be connected to the positive supply voltage.
Data Validity
A data on the DATA Line is considered valid and stable only when the CLK Signal is in
HIGH State. The HIGH and LOW State of the DATA Line can only change when the
CLK signal is LOW. Please refer to the figure below.
Start and Stop Conditions
A Start Condition is activated when 1) the CLK is set to HIGH and 2) DATA shifts
from HIGH to LOW State. The Stop Condition is activated when 1) CLK is set to
HIGH and 2) DATA shifts from LOW to HIGH State. Please refer to the timing diagram
below.
PT2313 v 1
Page 4
Written Feb. 1997
4페이지 PTC Princeton Technology Corp.
Tel : 886-2-29162151
Fax : 886-2-29174598
4-Channel Audio Processor IC
PT2313
Volume
The table below gives a detailed description of the Volume Data Bytes. For example, a
volume of -37.5 dB is given by 0 0 0 1 1 1 1 0.
MSB
LSB FUNCTION
0 0 B2 B1 B0 A2 A1 A0 Volume 1.25 dB steps
00 0
0
00 1
-1.25
01 0
-2.5
01 1
-3.75
10 0
-5
10 1
-6.25
11 0
-7.5
11 1
-8.75
0 0 B2 B1 B0 A2 A1 A0 Volume 10dB steps
000
0
001
-10
010
-20
011
-30
100
-40
101
-50
110
-60
111
-70
Speaker Attenuators
The table below gives a detailed description of the speaker attenuators data bytes. For
example, an attenuation of 30dB on the Speaker lF (Right Front) is given by: 1 0 0 1 1 0
0 0.
PT2313 v 1
MSB
LSB FUNCTION
1 0 0 B1 B0 A2 A1 A0 Speaker LF
1 0 1 B1 B0 A2 A1 A0 Speaker RF
1 1 0 B1 B0 A2 A1 A0 Speaker LR
1 1 1 B1 B0 A2 A1 A0 Speaker RR
00 0
0
00 1
-1.25
01 0
-2.5
01 1
-3.75
Page 7
Written Feb. 1997
7페이지 | |||
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