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AK5701KN_17 Datasheet, PDF (26/64 Pages) Asahi Kasei Microsystems – PLL & MIC-AMP内蔵16-Bit Stereo ADC | |||
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[AK5701]
â EXT Slave Mode (PMPLL bit = â0â, M/S bit = â0â)
PMPLL bitãâ0âã«ãããã¨ã§ãå¤é¨ã¯ããã¯ã¹ã¬ã¼ãã¢ã¼ã(EXT Slave Mode)ã§åä½ããMCKI pinããPLL
ãä»ããã«ç´æ¥ãADCã«ãã¹ã¿ã¯ããã¯ãå
¥åã§ãã¾ãããã®ã¢ã¼ãã¯é常ã®ãªã¼ãã£ãªCODECã¨ã®I/Fã«
対ãã¦äºææ§ãããã¾ããå¿
è¦ãªã¯ããã¯ã¯MCKI (256fs, 512fs or 1024fs), EXBCLK (ï³32fs), EXLRCK(fs)ã§ãã
MCKIã¨EXLRCKã¯åæããå¿
è¦ãããã¾ããä½ç¸ãåãããå¿
è¦ã¯ããã¾ãããMCKIã®å
¥åå¨æ³¢æ°ã¯
FS1-0 bitã«ããé¸æãããã¨ãå¯è½ã§ãã(Table 11)
Mode
FS3-2 bits
FS1 bit FS0 bit
MCKI Input
Frequency
Sampling Frequency
Range
0
x
0
0
256fs
7.35kHz ï¾ 48kHz
1
x
0
1
1024fs
7.35kHz ï¾ 13kHz
2
x
1
0
512fs
7.35kHz ï¾ 26kHz
3
x
1
1
256fs
7.35kHz ï¾ 48kHz (default)
Table 11. EXT Slave Mode (PMPLL bit = â0â, M/S bit = â0â) æã®MCKIå¨æ³¢æ°ã®è¨å® (x: Donât care)
ADCãåä½ä¸(PMADL bit = â1â or PMADR bit = â1â)ã¯å¤é¨ã¯ããã¯(MCKI, EXBCLK, EXLRCK)ãæ¢ãã¦ã¯ã
ãã¾ããããããã®ã¯ããã¯ãä¾çµ¦ãããªãå ´åãå
é¨ã«ãã¤ãããã¯ãªãã¸ãã¯ã使ç¨ãã¦ãããããé
é»æµãæµããåä½ãç°å¸¸ã«ãªãå¯è½æ§ãããã¾ããã¯ããã¯ãæ¢ããå ´åã¯ãã¯ã¼ãã¦ã³ç¶æ
(PMADL=PMADR bits = â0â)ã«ãã¦ãã ããã
AK5701
MCKO
MCKI
EXBCLK
EXLRCK
256fs, 512fs or 1024fs
DSP or ïP
MCLK
ï³ 32fs
BCLK
1fs
LRCK
SDTO
SDTI
Figure 22. EXT Slave Mode
MS0404-J-04
- 26 -
2015/10
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