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AK2306LVM Datasheet, PDF (6/36 Pages) Asahi Kasei Microsystems – ISDN/VoIPターミナルアダプタ用 2チャンネル PCMコーデック LSI | |||
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ASAHI KASEI
端åçªå· 端åå称
1 VFTP1
2 VFTN1
3 GST1
4 GSR1
5 VFR1
6 VR1
7 VDD
8 FS
9 BCLK
10 DX
11 DR
12 TNOUT
13 SCLK
14 DATA
15 CSN
16 LPC
17 VR0
18 VSS
[AK2306/LV]
端åæ©è½
I/O
æ©è½
I CH1 å
¥åã²ã¤ã³èª¿æ´ç¨ãªãã¢ã³ãã®æ£è»¢å·®åå
¥åã
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¥åã¢ã³ããæ§æã
ã²ã¤ã³èª¿æ´ãè¡ãã¾ãã
I CH1 å
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¥åã
VFTP1端åã¨å¤é¨æµæã§ãå·®åã¾ãã¯ã·ã³ã°ã«ã¨ã³ãå
¥åã¢ã³ããæ§æãã²
ã¤ã³èª¿æ´ãè¡ãã¾ãã
O CH1 å
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å¤é¨æµæã§å·®åå
¥åã¢ã³ããæ§æãã²ã¤ã³èª¿æ´ãè¡ãã¾ãã
O CH1 åºåã²ã¤ã³èª¿æ´ç¨ãªãã¢ã³ãã®åºåã
å¤é¨æµæã§å転ã¢ã³ããæ§æãã²ã¤ã³èª¿æ´ãè¡ãã¾ãã
I CH1 åºåã²ã¤ã³èª¿æ´ç¨ãªãã¢ã³ãã®å転å
¥åã
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ãã¢ã³ããå·®åã¢ã³ãã¨ãã¦æ§æããå ´åããã®ãªãã¢ã³ããå·®åã¢ã³ãã®
ã¢ããã°GNDç¨ã®ãããã¡ã¨ãã¦ä½¿ç¨ãã¦ãã ããããã®å ´åããã®ã¢ã³
ããç¨ããåºåã²ã¤ã³èª¿æ´ã¯åºæ¥ã¾ããã
O CH1 ã¢ããã°åºåã
B2ã®PCMãã¼ã¿ãã¢ããã°ä¿¡å·ã«å¤æããåºåã§ãã(SEL2B=0æ)
- æ£é»æºç«¯åã
I PCMãã¼ã¿éååæä¿¡å·å
¥åã
PCMãã¼ã¿å
¥åºåã¿ã¤ãã³ã°ãå¶å¾¡ãã¾ããBCLKã¨åæãã8kHz ã®ä¿¡å·
ãå
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¨ãã¯ã¼ãã¦ã³æ以å¤ã¯å¸¸ã«å
¥åãã¦ä¸ããã
I PCMãã¼ã¿è»¢éã¬ã¼ãå¶å¾¡ã¯ããã¯å
¥åã
64kã®Nåï¼N=2ï½64ï¼ï¼128kï½4096kHzã®ã¯ããã¯ãå
¥åãã¾ãã
å
¨ãã¯ã¼ãã¦ã³æ以å¤ã¯å¸¸ã«å
¥åãã¦ä¸ããã
O PCMãã¼ã¿åºå端åã
CH0,CH1ã®PCMãã¼ã¿ãå¤éåãã¦åºåãã¾ãããã¼ã¿è»¢éã¬ã¼ãã¯
BCLKã§è¨å®ããã¾ãã詳細ã¯PCMã¤ã³ã¿ãã§ã¼ã¹ã®é
ç®(Page.9~)ãåç
§
ãã¦ä¸ããããã®ç«¯åã¯éä¿¡ãã¼ã¿ãåå¨ãã16ãããæé以å¤ã¯ããã¤ã¤
ã³ãã¼ãã³ã¹ã¨ãªãã¾ãã
I PCMãã¼ã¿ã®å
¥å端åã
CH0,CH1ã®PCMãã¼ã¿ãå¤éåãã¦å
¥åãã¾ãããã¼ã¿è»¢éã¬ã¼ãã¯
BCLKã§è¨å®ããã¾ãã詳細ã¯PCMã¤ã³ã¿ãã§ã¼ã¹ã®é
ç®(Page.9~)ãåç
§
ãã¦ä¸ããã
O 16Hz/20Hzãã¼ã³åºå端åã
ã¬ã¸ã¹ã¿ã§é¸æãã¾ãã
I ã·ãªã¢ã«ã¤ã³ã¿ãã§ã¼ã¹ã®ã¯ããã¯å
¥å端åã
I/O ã·ãªã¢ã«ã¤ã³ã¿ãã§ã¼ã¹ã®ãã¼ã¿å
¥åºå端åã
I ã·ãªã¢ã«ã¤ã³ã¿ãã§ã¼ã¹ã®ãããã»ã¬ã¯ãå
¥å端åã
O PLLã®ã«ã¼ããã£ã«ã¿ç¨ç«¯åã
0.22 uF以ä¸ã®å®¹éãå¤ä»ãã¦ä¸ããã
O CH0 ã¢ããã°åºåã
B1ã®PCMãã¼ã¿ãã¢ããã°ä¿¡å·ã«å¤æããåºåã§ãã(SEL2B=0æ)
- è² é»æºç«¯åã
MS0093-J-06
6
2012/01
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