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AK4414EQ Datasheet, PDF (19/51 Pages) Asahi Kasei Microsystems – High Performance 120dB 32-Bit 4ch DAC | |||
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[AK4414]
åä½èª¬æ
â D/Aå¤æã¢ã¼ã
AK4414ã¯ã·ãªã¢ã«ã¢ã¼ãæãPCMãã¼ã¿ã¨DSDãã¼ã¿ã®ä¸¡æ¹ãD/Aå¤æãããã¨ãå¯è½ã§ããDSD modeæ
ã¯ãDCLK, DSDL, DSDRã®åãã³ããDSDãã¼ã¿ãå
¥åã§ãã¾ããPCM modeã§ã¯BICK, LRCK, SDATAã®å
ãã³ããPCMãã¼ã¿ãå
¥åãã¾ããã¢ã¼ãåãæ¿ãã¯DP bitã§è¡ãã¾ããDP bitã§PCM/DSD modeãåãæ¿ã
ãå ´åã¯RSTN bitã§ãªã»ãããã¦ä¸ãããåãæ¿ãã«ã¯2 ~ 3/fsç¨åº¦ãããã¾ãããã©ã¬ã«ã¢ã¼ãæã¯PCMã
ã¼ã¿ã®ã¿ã«å¯¾å¿ãã¾ãã
DP bit Interface
0
PCM
1
DSD
Table 1. PCM/DSD Mode Control
â ã·ã¹ãã ã¯ããã¯
[1] PCM mode
AK4414ã«å¿
è¦ãªã¯ããã¯ã¯ãMCLK, BICK, LRCKã§ããMCLKã¨LRCKã¯åæããå¿
è¦ã¯ããã¾ããä½ç¸ã
åãããå¿
è¦ã¯ããã¾ãããMCLKã¯ã¤ã³ã¿ã¼ãã¬ã¼ã·ã§ã³ãã£ã«ã¿ã¨ÎΣå¤èª¿å¨ã«ä½¿ç¨ããã¾ãã
åä½ä¸ã«MCLKã¾ãã¯LRCKãæ¢ã¾ã£ãå ´åã¯ãAK4414ã¯èªåçã«ãªã»ããç¶æ
ã«ãªããã¢ããã°åºåã¯
AVDD/2é»å§(typ)ãåºåãã¾ããMCLKã¨LRCKãåå
¥åå¾ããªã»ããç¶æ
ã解é¤ããåä½ãåéãã¾ããé»
æº ONæãªã©ã®ã·ã¹ãã ãªã»ãã解é¤(PDN pin = âLâ â âHâ)å¾ã¯ MCLKã¨LRCKãå
¥åãããã¾ã§ãã¯ã¼ãã¦
ã³ç¶æ
ã§ãã
(1) ãã©ã¬ã«ã¢ã¼ã (PSN pin = âHâ)
1. Manual Setting Mode (ACKS pin = âLâ)
Manual Setting Modeã§ã¯ããµã³ããªã³ã°ã¹ãã¼ãã¯Normal Speed Modeã®ã¿ã«å¯¾å¿ãã¾ã (Table 2)ãMCLKå¨
æ³¢æ°ã¯Table 3ã§ç¤ºãããå¨æ³¢æ°ãå¤é¨ããä¾çµ¦ãã¦ä¸ãããAK4414ã¯èªåçã«å¯¾å¿å¨æ³¢æ°ã«åããã¦åä½ã
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Sampling Rate (fs)
Normal Speed Mode 8kHz â¼ 54kHz
Table 2. Sampling Speed (Manual Setting Mode @Parallel Mode)
LRCK
fs
32.0kHz
44.1kHz
48.0kHz
MCLK (MHz)
BICK
128fs
192fs
256fs
384fs
512fs
768fs
1152fs
64fs
N/A
N/A
8.1920 12.2880 16.3840 24.5760 36.8640 2.0480MHz
N/A
N/A
11.2896 16.9344 22.5792 33.8688
N/A 2.8224MHz
N/A
N/A
12.2880 18.4320 24.5760 36.8640
N/A 3.0720MHz
Table 3. System Clock Example (Manual Setting Mode @Parallel Mode), (N/A: Not available)
MS1476-J-00
- 19 -
2013/01
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