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AK5701KN_17 Datasheet, PDF (25/64 Pages) Asahi Kasei Microsystems – PLL & MIC-AMP内蔵16-Bit Stereo ADC | |||
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[AK5701]
â PLL Slave Mode (PMPLL bit = â1â, M/S bit = â0â)
MCKI, EXBCLK or EXLRCK pinã¸å
¥åãããã¯ããã¯ãåºæºã«å
é¨ã®PLLã«ã¦AK5701ã«å¿
è¦ãªã¯ããã¯ãç
æãã¾ããPLLã®åºæºã¯ããã¯ã¯ãPLL3-0 bitã«ã¦è¨å®ãããã¨ãã§ãã¾ã(Table 4)ã
a) PLL åºæºã¯ããã¯: MCKI pin
MCKOã«åæããEXBCLK, EXLRCKãå
¥åãã¾ããMCKOã¨EXLRCKã¯åæããå¿
è¦ãããã¾ããä½ç¸ãå
ãããå¿
è¦ã¯ããã¾ããããã¹ã¿ã¯ããã¯åºå(MCKO pin)ã¯PS1-0 bit (Table 9)ã§è¨å®ãããå¨æ³¢æ°ãåºåãã
MCKO bitã§ON/OFFå¯è½ã§ãããµã³ããªã³ã°å¨æ³¢æ°ã¯ãFS3-0 bitã§è¨å®ãããã¨ãã§ãã¾ãã(Table 5)
AK5701
11.2896MHz, 12MHz, 12.288MHz, 13MHz
13.5MHz, 19.2MHz, 24MHz, 26MHz, 27MHz
DSP or ïP
MCKI
MCKO
EXBCLK
EXLRCK
256fs/128fs/64fs/32fs
ï³ 32fs
1fs
MCLK
BCLK
LRCK
SDTO
SDTI
Figure 20. PLL Slave Mode 1 (PLL Reference Clock: MCKI pin)
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
b) PLL åºæºã¯ããã¯: EXBCLK or EXLRCK pin
FS3-0 bitãè¨å®ãããã¨ã§ã7.35kHz ï¾ 48kHzã®ä»»æã®ãµã³ããªã³ã°å¨æ³¢æ°ã«å¯¾å¿ãã¾ãã(Table 6)
AK5701
MCKI
EXBCLK
EXLRCK
SDTO
DSP or ïP
32fs, 64fs
1fs
BCLK
LRCK
SDTI
Figure 21. PLL Slave Mode 2 (PLL Reference Clock: EXLRCK or EXBCLK pin)
MS0404-J-04
- 25 -
2015/10
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