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AK5701KN_17 Datasheet, PDF (38/64 Pages) Asahi Kasei Microsystems – PLL & MIC-AMP内蔵16-Bit Stereo ADC | |||
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[AK5701]
â å
¥åãã£ã¸ã¿ã«ããªã¥ã¼ã (ããã¥ã¢ã«ã¢ã¼ãæ)
ALC bit = â0âã®ã¨ããå
¥åãã£ã¸ã¿ã«ããªã¥ã¼ã ã¯ããã¥ã¢ã«ã¢ã¼ãã«ãªãã¾ãããã®ã¢ã¼ãã¯ä»¥ä¸ã®å ´å
ã«ä½¿ç¨ãã¾ãã
1. ãªã»ãã解é¤å¾ãALCåä½ã«é¢ããã¬ã¸ã¹ã¿è¨å®(ZTM1-0, LMTHãªã©)ãè¡ãå ´åã
2. ãµã³ããªã³ã°å¨æ³¢æ°ã®å¤æ´ã«ä¼´ãããªããã¿ï¼ãªã«ããªå¨æãªã©ALCåä½ã«é¢ããã¬ã¸ã¹ã¿å¤æ´ã
è¡ãå ´åã
3. å
¥åãã£ã¸ã¿ã«ããªã¥ã¼ã ãããã¥ã¢ã«ããªã¥ã¼ã ã¨ãã¦ä½¿ç¨ããå ´åã
å
¥åãã£ã¸ã¿ã«ããªã¥ã¼ã ã®ã²ã¤ã³éã¯IVL7-0, IVR7-0 bitã§è¨å®ãã¾ã(Table 29)ãããªã¥ã¼ã å¤æ´æãL/R
ç¬ç«ã«ã¼ãã¯ãã¹æ¤åºåä½ãè¡ãã¾ããã¼ãã¯ãã¹ã¿ã¤ã ã¢ã¦ãæéã¯ZTM1-0 bitã§è¨å®ãããã¨ãã§ãã¾
ãã
PMADL = PMADR bits = â0âã®ã¨ãã«IVL7-0, IVR7-0 bitsã«æ¸ãè¾¼ã¿ãè¡ãã¨ãPMADL bit = â1â or PMADR bit =
â1âã«æ¸ãæãã¦ããADCã®åæåãµã¤ã¯ã«å¾ã«ããã®è¨å®å¤ã§IVOLãåä½ãéå§ãã¾ãã
IVL7-0
IVR7-0
GAIN (dB)
Step
F1H
+36.0
F0H
+35.625
EFH
+35.25
:
:
92H
+0.375
91H
0.0
0.375dB (default)
90H
ï0.375
:
:
03H
ï53.25
02H
ï53.625
01H
ï54
00H
MUTE
Table 29. å
¥åãã£ã¸ã¿ã«ããªã¥ã¼ã ã®è¨å®å¤
MS0404-J-04
- 38 -
2015/10
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