Rohm BU9458KV Audio Decoder IC Manuals

Manuals and User Guides for Rohm BU9458KV Audio Decoder IC. We have 1 Rohm BU9458KV Audio Decoder IC manual available for free PDF download: Application Note

Rohm BU9458KV Application Note

Rohm BU9458KV Application Note (42 pages)

Brand: Rohm | Category: Media Converter | Size: 0 MB

Table of Contents

Table of Contents
2
Introduction
5
Internal Block Diagram
6
Terminal Port Layout
7
III.1 Terminal Port Layout Diagram
7
Connection Diagram
7
IV.1 Mode1
7
IV.2 Mode2
7
IV.3 Mode3
7
IV.4 Oscillator Circuit
9
Sequence Control
13
Mode1
13
Power on Sequence
13
State Transition Diagram
14
Mode2
16
MODE2 Entire Sequence
16
Power on Sequence
17
Recognize Memory
17
Memory Recognition Operation Flow
17
Start Recognizing Memory
17
Detect Memory Insertion State
17
USB Memory Mount
18
Search USB Memory Playable File
18
SD Memory Mount
18
Search SD Memory Playable File
18
Memory Recognition Completed
18
2.3.9 Memory Recognition Status
19
Initial Setting
20
Perform TOC Analysis
21
Set Volume
22
V2.4.3 Set Audio Output
22
Set Tag Read
22
Set 12 Mhz Clock Output
22
Wait/Receive Operation Command
23
Start Playing
25
Send PLAY Command
25
Read Status/Wait/Receive Operation Command
25
Resume Play Method
26
Obtain Resume Data
26
Power on Sequence
28
Check Memory Device
28
Toc/Initial Setting
28
Resume Play Initial Setting
28
Send SET_RESUME_INFO Command and Start Resume Play
28
Obtain Folder Name, File Name and Tag Information
29
Set REPEAT/RANDOM
29
Wait for Operation Command
29
Fast Forward(Backward) Play
30
Fast Forward(Backward) Play Speed Setting
30
Fast Forward(Backward) Play Attenuation Setting
31
Fast Forward(Backward) Play Start
31
Fast Forward(Backward) Play Stop
31
Mode3
32
MODE 3 Entire Sequence
32
Power on Sequence, Recognize Memory
33
Initial Setting
33
Obtain Information Within Folder
34
Specify Folder to be Analyzed
35
Start Analyzing Folder
35
Does Analysis Information Exist
35
Read Folder/File Information
35
Has Analysis Result Been Obtained
35
Specify AAC/WMA/MP3 File to be Played
36
Obtain Tag Information
36
Send GET_ID3 Command
36
Has Tag Information Been Obtained
36
Read Tag Information
36
The Notes When GET_ID3 Command Execution
37
Start Playing
37
Read Status
37
Ⅴ.4 File Read Function
39
Ⅴ.4.1 the Flow of the File Read Function
39
Ⅴ.4.1.1 Stop Condition
39
Ⅴ.4.1.2 File Name Specification
39
Ⅴ.4.1.3 Acquisition of Size of File
40
Ⅴ.4.1.4 Specified File Existence
40
Ⅴ.4.1.5 Data Reading
40
Ⅴ.4.1.6 Termination
41
Ⅴ.4.1.7 Reset
41
Revision History
42

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