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AK5701KN_17 Datasheet, PDF (52/64 Pages) Asahi Kasei Microsystems – PLL & MIC-AMP内蔵16-Bit Stereo ADC | |||
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[AK5701]
3. PLLã¹ã¬ã¼ãã¢ã¼ãã§å¤é¨ã¯ããã¯(MCKI pin)ã使ç¨ããå ´å
Example:
Audio I/F Format: I2S
BCLK frequency at Master Mode: 64fs
Input Master Clock Select at PLL Mode: 11.2896MHz
MCKO: Enable
Sampling Frequency: 44.1kHz
Power Supply
PDN pin
PMVCM bit
(Addr:10H, D2)
MCKO bit
(Addr:16H, D2)
PMPLL bit
(Addr:11H, D0)
MCKI pin
MCKO pin
EXBCLK pin
EXLRCK pin
(1)
(2) (3)
(4)
(5)
Input
40msec(max)
(6)
(7)
(8)
Output
Input
(1) Power Supply & PDN pin = âLâ ï âHâ
(2)Addr:11H, Data:10H
Addr:14H, Data:23H
Addr:15H, Data:2FH
(3)Addr:10H, Data:04H
(4)Addr:16H, Data:04H
Addr:11H, Data:11H
MCKO output start
EXBCLK and EXLRCK input start
Figure 47. Clock Set Up Sequence (3)
<æé ä¾>
(1) é»æºç«ã¡ä¸ãå¾ãPDN pin âLâ ï âHâ
ãã®åºéã¯AK5701ã®ãªã»ããã®ããã150ns以ä¸ã® âLâåºéãå¿
è¦ã§ãã
(2) ãã®åºéã«ãDIF1-0, PLL3-0, FS3-0, BCKO1-0, M/S bitsã®è¨å®ãè¡ã£ã¦ä¸ããã
(3) VCOMã®ãã¯ã¼ã¢ããï¼ PMVCM bit = â0â ï â1â
åãããã¯ãç«ã¡ä¸ããåã«æåã«VCOMãç«ã¡ä¸ãã¦ä¸ããã
(4) MCKO åºåã®è¨å®: MCKO bit = â1â
(5) PMPLL bit = â0â ï â1âãè¨å®ããMCKI pinã«ã¯ããã¯ãä¾çµ¦ãããå¾ãPLLåä½ãã¹ã¿ã¼ããã¾ãã
PLLã®ããã¯æéã¯MCKI=12MHzã®ã¨ã40ms(max)ã§ã(Table 4)ã
(6) PLLãå®å®å¾ãMCKO pin ããæ£å¸¸ãªã¯ããã¯ãåºåããã¾ãã
(7) ãã®åºéã§ã¯ãMCKO pin ããæ£å¸¸ã§ãªãã¯ããã¯ãåºåããã¾ãã
(8) MCKOã¯ããã¯ã«åæããEXBCLK, EXLRCKã¯ããã¯ãå
¥åãã¦ãã ããã
MS0404-J-04
- 52 -
2015/10
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