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AMU2481 データシート(PDF) 2 Page - Micronas

部品番号 AMU2481
部品情報  Audio Mixer
Download  25 Pages
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メーカー  MICRONAS [Micronas]
ホームページ  http://www.micronas.com
Logo MICRONAS - Micronas

AMU2481 データシート(HTML) 2 Page - Micronas

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AMU 2481
MICRONAS INTERMETALL
2
Contents
Page
Section
Title
3
1.
Introduction
3
1.1.
Application of the AMU 2481
5
2.
Architecture of the AMU 2481 and Functional Description
5
2.1.
I/O Blocks
5
2.1.1.
Digital Decimation Filters
6
2.1.2.
S Bus Interface and S Bus
6
2.1.2.1.
Description of the S Bus
6
2.1.2.2.
The S Bus Interface
6
2.1.3.
IM Bus Interface and IM Bus
6
2.1.3.1.
Description of the IM Bus
7
2.1.3.2.
The IM Bus Interface
8
2.1.4.
Digital/Analog Converter (DAC) and Volume 2
9
2.2.
DSP Block
9
2.2.1.
C–RAM, C–ROM and Data RAM
9
2.2.2.
Program ROM, Program Counter and Control Block
9
2.2.3.
Arithmetic Logic Unit (ALU)
9
2.3.
System Clock
ΦM and PDM Sampling Rate
10
3.
Functions Solved by DSP Software
10
3.1.
Representation of Numbers
10
3.2.
DC Offset Suppression (for PDM–Data only)
10
3.3.
50
µs Digital Deemphasis (for PDM–Data only)
11
3.4.
J17 Deemphasis (for S–Data only)
11
3.5.
Medium Quality Oversampling Filter
11
3.6.
Audio Mixing Section
12
3.7.
Sin x/x Compensation
12
3.8.
Volume Control
12
3.9.
Matrix 2
13
3.10.
50
µs Digital Preemphasis
13
3.11.
Oversampling Filter for Ch1 and Ch2
13
3.12.
AMU 2481 Initialization
14
3.13.
Complete Coefficient Table
16
4.
Specifications
16
4.1.
Outline Dimensions
16
4.2.
Pin Connections
16
4.2.1.
24–Pin DIL Package
17
4.2.2.
44–Pin PLCC Package
17
4.3.
Pin Descriptions
18
4.4.
Pin Circuits
19
4.5.
Electrical Characteristics
19
4.5.1.
Absolute Maximum Ratings
19
4.5.2.
Recommended Operating Conditions
21
4.5.3.
Characteristics
22
5.
Appendix 1: Application Circuit
23
6.
Appendix 2: Program Structure


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