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AK4495SEQ Datasheet, PDF (27/58 Pages) Asahi Kasei Microsystems – Quality-oriented Premium 32-Bit 2ch DAC | |||
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[AK4495S]
[2] DSD mode
å¿
è¦ãªã¯ããã¯ã¯ãMCLK, DCLKã§ããMCLKã¨DCLKã¯åæããå¿
è¦ã¯ããã¾ããä½ç¸ãåãããå¿
è¦ã¯ããã¾ãããMCLKå¨æ³¢æ°ã¯DCKS bitã§è¨å®ãã¾ãã
åä½ä¸(PDN pin = âHâ)ã«ãMCLKãæ¢ã¾ã£ãå ´åã¯ãAK4495Sã¯èªåçã«ãªã»ããç¶æ
ã«ãªããã¢ãã
ã°åºåã¯AVDD/2é»å§(typ)ãåºåãã¾ãã
DCKS bit
0
1
MCLK Frequency DCLK Frequency
512fs
64fs
768fs
64fs
Table 15. System Clock (DSD Mode)
(default)
AK4495Sã¯DSDãã¼ã¿ã¹ããªã¼ã ã®2.8224MHz(64fs)ã¨5.6448MHz(128fs)ã«å¯¾å¿ãã¾ããè¨å®ã¯DSDSEL
bitã§è¡ããDSDSEL bit = â0âã®ã¨ã2.8224MHz (64fs)ã«å¯¾å¿ããDSDSEL bit = â1âã®ã¨ã5.6448MHz (128fs)
ã«å¯¾å¿ãã¾ãã
DSDSEL
bit
DSD data stream
0
2.8224MHz (default)
1
5.6448MHz
Table 16. DSD Sampling Speed Control
AK4495Sã¯Volume passæ©è½ãããã¾ããDSDD1-0 bitã§3種é¡é¸æã§ãã¾ãã
DSDD1 DSDD0
Mode
0
0
Normal path (default)
0
1
Volume pass
1
0
Reserved
1
1
Reserved
Table 17. DSD Play Back Mode Control
AK4495Sã¯DSDã®ãªã¼ãã£ãªãã¼ã¿ã2048sample(1/fs)ã®æéãã¹ã¦â1â, â0âã¨ãªã£ãã¨ãå
é¨ã§åºåã
ãã¥ã¼ãããæ©è½ãããã¾ããDDM bitã§ãã®ãã¥ã¼ãæ©è½ãæå¹ã«ãªãã¾ãããã¥ã¼ããããå ´åã
Lchã¨Rchã®ãã©ã°ãDML bit, DMR bitã«ç«ã¦ã¾ããä¿¡å·ãé常ã®ã¬ãã«ã«æ»ã£ãæã«ãã¥ã¼ããèªå解
é¤ããããã¬ã¸ã¹ã¿ã§è§£é¤ããããDMC bitã§é¸æã§ãã¾ãããã¥ã¼ããã¬ã¸ã¹ã¿ã§è§£é¤ããå ´åã¯
DMRE bitã§è§£é¤ãããã¨ãåºæ¥ã¾ãã
MS1560-J-01
- 27 -
2013/11
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