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AK2510 Datasheet, PDF (11/18 Pages) Asahi Kasei Microsystems – AK2510 | |||
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ASAHI KASEI
[AK2510]
ï¼PCM ãã©ã¼ãããã¢ã¼ã
PCM ãã©ã¼ãããã¢ã¼ãã§ã¯ãLong Frame 㨠Short Frame ã®ä¸¡ãã©ã¼ãããããµãã¼ããã¾ããLF/SF
ã®å¤å®ã¯ãAK2510 ã«å
¥åããã FS ä¿¡å·ãã LSI ãèªåçã«å¤å®ãã¾ãã
âLF/SF ã®å¤å®æ³
AK2510ã¯å
¥åãããFSã®âHâæéã«ããLong FrameãShort Frameããèªåçã«å¤æãã¾ãã
FS=âHâã®æé
ãã¬ã¼ã æ§æ
BCLKã®2å¨æ以ä¸
LF
BCLKã®1å¨æ
SF
âã¤ã³ã¿ãã§ã¼ã¹ã¿ã¤ãã³ã°
PCMãã¼ã¿ã¯ããã¬ã¼ã åæä¿¡å·FSã«åæãã¦ã1ãã¬ã¼ã åºé(125μs)æ¯ã«8ãããã®ãã¼ã¿ã
T/ROUT,T/RIN端åããå
¥åºåããã¾ãã詳ããã¯å¾è¿°ã®ã¿ã¤ãã³ã°å³ãåç
§ä¸ããã
âãã¬ã¼ã åæä¿¡å·ï¼Frame Syncï¼FSï¼
8kHzã®åºæºå
¥åä¿¡å·ã§ãã1ãã¬ã¼ã (125μsæ¯)ã«8ãããã®PCMãã¼ã¿ãå
¥åºåããã¾ããBCLKã¨åæã
ã¦ãããã¨ãå¿
è¦ã§ããFSã¯PLLã®å
¥åã¨ãªããããããã¨ã«å
é¨ã®åä½ã¯ããã¯ãçæããã¾ãã
âBCLK
PCMãã¼ã¿ã¬ã¼ããå®ãã¾ãã512kHzãããã¯2.048MHzã®ã¬ã¼ãã«å¯¾å¿ã§ãã¾ãã
LongFrame
FS
BCLK
DX
1 2 3 4 5 6 78
DR
Donât
care
1
2
3
4
5
6
7
8
Hi-Z
Donât care
ShortFrame
FS
BCLK
DX
1 2 3 4 5 6 78
DR
Donât
care
12345678
Hi-Z
Donât care
AKM
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AK2510-J-00
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