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AK4688EN Datasheet, PDF (20/36 Pages) Asahi Kasei Microsystems – Asynchronous Stereo CODEC with Capless Line I/O | |||
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[AK4688]
â νÏÊδÏϯÏÕ³à¿
DVDD pinã«ä¾çµ¦ãããé»å§ãããå
é¨ã®ãã£ã¼ã¸ãã³ãåè·¯ã«ãããè² é»æº(CVEE) ãçæãã¾ããçæã
ããè² é»æºã¯ãã¢ããã°å
¥åºåç¨ã®é»æºã¨ãã¦ä½¿ç¨ããã¾ãã
ãã£ã¼ã¸ãã³ãåè·¯ã®ãã¯ã¼ã¢ããæéã¯ã1.3msec@48kHz (typ)ã¨ãªãã¾ããADCã¨DAC ã¯ããã£ã¼ã¸ã
ã³ãåè·¯ãç«ã¡ä¸ãã£ãå¾ãç«ã¡ä¸ããã¾ãã
ãã£ã¼ã¸ãã³ãåè·¯ã®ç«ã¡ä¸ããæ¡ä»¶ã¯ã
I2Cã³ã³ããã¼ã«ã¢ã¼ãã®å ´åã以ä¸ã®æ¡ä»¶ã®ããããã«ãªãã¾ãã
ã»PDN1 pin=âHâ ã㤠PWAD bit = â1â ã㤠MCLK1, LRCK1, BICK1(master modeæã«MCLK1)ãå
¥åãããæ
ã» PDN2 pin= âHâ ã㤠PWDA bit = â1â ã㤠MCLK2, LRCK2, BICK2ãå
¥åãããæ
H/Wã³ã³ããã¼ã«ã¢ã¼ãã®å ´åã以ä¸ã®æ¡ä»¶ã®ããããã«ãªãã¾ãã
ã»PDN1 pin= âHâ ã㤠MCLK1, LRCK1, BICK1(master modeæã«MCLK1)ãå
¥åãããæ
ã»PDN2 pin= âHâ ã㤠MCLK2, LRCK2, BICK2ãå
¥åãããæ
PDN1
pin
H
x
PWAD
bit
1
x
Master mode : MCLK1
Slave mode :
MCLK1,LRCK1, BICK1
PDN2
pin
PWDA
bit
MCLK2, BICK2, LRCK2
CP status
active
x
x
Ã
ON
Ã
H
1
active
ON
Table 20. Charge Pump Power ON æ¡ä»¶ (I2C ã³ã³ããã¼ã«ã¢ã¼ã)
(Ã: Donât Care)
PDN1
pin
H
x
Master mode: MCLK1
Slave mode: MCLK1, LRCK1, BICK1
PDN2
pin
MCLK2, BICK2, LRCK2
CP status
Active
x
Ã
ON
Ã
H
active
ON
(Ã: Donât Care)
Table 21. Charge Pump Power ON æ¡ä»¶ (H/W ã³ã³ããã¼ã«ã¢ã¼ã)
AK4688
DVDD
Charge
Pump
Negative Power
CP
CN VSS3
VEE
Cb
(+)
1uF
1uF Ca
(+)
Figure 9. è² é»æºçæåè·¯
注: CP-CNéãDVSS-VEEéã«1uFã®ä½ESRã³ã³ãã³ãµãã¤ãã¦ãã ããã
MS1420-J-00
- 20 -
2012/05
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