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AK4495SEQ Datasheet, PDF (37/58 Pages) Asahi Kasei Microsystems – Quality-oriented Premium 32-Bit 2ch DAC | |||
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[AK4495S]
(2) MCLKåæ¢ã¾ãã¯LRCK/WCKåæ¢ã«ãããªã»ãã
PCM modeã§åä½ä¸ (PDN pin = âHâ) ã«MCLK ã¾ãã¯LRCKãæ¢ã¾ã£ãå ´åã¯ãAK4495Sã¯èªåçã«ãªã»
ããç¶æ
ã«ãªããã¢ããã°åºåã¯ããã¼ãã£ã³ã°ç¶æ
(Hi-Z)ã«ãªãã¾ããMCLKã¨LRCKãåå
¥åå¾ããª
ã»ããç¶æ
ã解é¤ããåä½ãåéãã¾ããMCLK ã¾ãã¯LRCKãæ¢ãã¦ããã¨ãã¯ãã¼ãæ¤åºæ©è½ã¯å
ä½ãã¾ãããDSD modeã§åä½ä¸ã¯MCLKãæ¢ã¾ã£ãå ´åããªã»ããç¶æ
ã«ãªãã¾ããå¤é¨ãã¸ã¿ã«ãã£
ã«ã¿ã¢ã¼ãã§åä½ä¸ã¯MCLKãWCKãæ¢ã¾ã£ãå ´åããªã»ããç¶æ
ã«ãªãã¾ãã
AVDD pin
DVDD pin
PDN pin
Internal
State
D/A In
(Digital)
D/A Out
(Analog)
Clock In
MCLK, LRCK
External
MUTE
(1)
Power-down
Normal Operation
Digital Circuit Power-down
Normal Operation
Power-down
Hi-Z
(4)
GD (2)
(3)
(4)
(5)
(4)
(5)
MCLK, LRCK Stop
GD (2)
(6)
(6)
(6)
Notes:
(1) é»æºæå
¥å¾PDN pinã âLâããã¹ã¿ã¼ãã150ns以ä¸ã®éãPDN pinãâLâã«ãã¦ä¸ããã
(2) ãã£ã¸ã¿ã«å
¥åã«å¯¾ãã¦ã¢ããã°åºåã¯ç¾¤é
延(GD)ãæã¡ã¾ãã
(3) ãã£ã¸ã¿ã«ãã¼ã¿ã®å
¥åãæ¢ãããã¨ãã§ãã¾ãããã®åºéã«â0âãã¼ã¿ãå
¥åãã¦ãããã¨ã§ã
MCLK, LRCKåå
¥åå¾ã®ã¯ãªãã¯ãã¤ãºã軽æ¸ã§ãã¾ãã
(4) PDN pinã®ç«ã¡ä¸ãã(âïâ)åã³MCLKã®å
¥åããã3~4LRCK以å
ã«ã¯ãªãã¯ãã¤ãºãåºåããã¾
ãããã®ãã¤ãºã¯ãã¼ã¿ãâ0âã®å ´åã§ãåºåããã¾ãã
(5) ãªã»ããç¶æ
(MCLKã¾ãã¯LRCK/WCKåæ¢)ã§ã¯ãåã¯ããã¯å
¥å(MCLK, BICK, LRCK/WCK)ã
ã¨ãããã¨ãã§ãã¾ãã
(6) ã¯ãªãã¯ãã¤ãº(4)ãåé¡ã«ãªãå ´åã¯ã¢ããã°åºåãå¤é¨ã§ãã¥ã¼ããã¦ãã ãããã¿ã¤ãã³ã°
ä¾ãFigure 15ã«è¨ãã¾ã
Figure 15. ãªã»ããã¿ã¤ãã³ã°ä¾
MS1560-J-01
- 37 -
2013/11
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