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AK4495SEQ Datasheet, PDF (34/58 Pages) Asahi Kasei Microsystems – Quality-oriented Premium 32-Bit 2ch DAC | |||
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[AK4495S]
â ã½ãããã¥ã¼ãæ©è½ (PCM, DSD)
ã½ãããã¥ã¼ãã¯ãã£ã¸ã¿ã«çã«å®è¡ããã¾ããSMUTE pinãâHâã¾ãã¯SMUTE bitãâ1âã«ããã¨ãã®
æç¹ã®ATTè¨å®å¤ããATTè¨å®å¤ ï´ ATTé·ç§»æéã§å
¥åãã¼ã¿ãïï¥ (â0â)ã¾ã§ã¢ããã¼ã·ã§ã³ããã¾ãã
SMUTE pinãâLâã¾ãã¯SMUTE bitãâ0âã«ããã¨ïï¥ç¶æ
ã解é¤ãããïï¥ããATTè¨å®å¤ ï´ ATTé·ç§»æé
ã§ATTè¨å®å¤ã¾ã§å¾©å¸°ãã¾ããã½ãããã¥ã¼ãéå§å¾ãïï¥ã¾ã§ã¢ããã¼ã·ã§ã³ãããåã«è§£é¤ãããã¨
ã¢ããã¼ã·ã§ã³ãä¸æãããåããµã¤ã¯ã«ã§ATTè¨å®å¤ã¾ã§å¾©å¸°ãã¾ããã½ãããã¥ã¼ãæ©è½ã¯ä¿¡å·ã
æ¢ããã«ä¿¡å·æºãåãæ¿ããå ´åãªã©ã«æå¹ã§ãã
SMUTE pin or
SMUTE bit
(1)
ATT_Level
Attenuation
(1)
(3)
-ï¥
GD
GD
(2)
(2)
AOUT
DZF pin
(4)
8192/fs
注ï¼
(1) ATTè¨å®å¤ ï´ ATTé·ç§»æéãä¾ãã°ãNormal Speed ModeæãATTè¨å®å¤ãâ255âã®å ´åã¯7424LRCK
ãµã¤ã¯ã«ã§ãã
(2) ãã£ã¸ã¿ã«å
¥åã«å¯¾ããã¢ããã°åºåã¯ç¾¤é
延(GD)ããã¡ã¾ãã
(3) ã½ãããã¥ã¼ãéå§å¾ãïï¥ã¾ã§ã¢ããã¼ã·ã§ã³ãããåã«è§£é¤ãããã¨ã¢ããã¼ã·ã§ã³ãä¸æã
ããåããµã¤ã¯ã«ã§ATTè¨å®å¤ã¾ã§å¾©å¸°ãã¾ãã
(4) åãã£ãã«ã®å
¥åãã¼ã¿ã8192åé£ç¶ãã¦â0âã®å ´åãåãã£ãã«ã®DZF pinã¯âHâã«ãªãã¾ããã
ã®å¾ãåãã£ãã«ã®å
¥åãã¼ã¿ãâ0âã§ãªããªãã¨ã対å¿ãããã£ãã«ã®DZF pinãâLâã«ãªãã¾ãã
Figure 12. Soft Mute Function
â ã·ã¹ãã ãªã»ãã
é»æºONæã«ã¯ãPDN pinã«ä¸åº¦âLâãå
¥åãã¦ãªã»ãããã¦ä¸ãããã¢ããã°é¨ã¯MCLKå
¥åã«ãããã¯
ã¼ãã¦ã³ç¶æ
ã解é¤ããããã£ã¸ã¿ã«é¨ã¯å
é¨ã«ã¦ã³ã¿ãMCLKã4/fsã«ã¦ã³ãããå¾ããã¯ã¼ãã¦ã³ç¶
æ
ã解é¤ããã¾ãã
MS1560-J-01
- 34 -
2013/11
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