|
AK4616VQ Datasheet, PDF (34/46 Pages) Asahi Kasei Microsystems – 24bit 3ch/5ch Audio CODEC with Mic Amplifier | |||
|
◁ |
[AK4616]
D7
D6
D5
D4
D3
D2
D1
D0
Figure 33. 第3ãã¤ã以éã®æ§æ
2. READå½ä»¤
R/W bitã â1âã®å ´åãAK4616ã¯READåä½ãè¡ãã¾ããæå®ãããã¢ãã¬ã¹ã®ãã¼ã¿ãåºåãããå¾ããã¹
ã¿ãåæ¢æ¡ä»¶ãéãã確èªå¿çãçæããã¨ããµãã¢ãã¬ã¹ãèªåçã«ã¤ã³ã¯ãªã¡ã³ãããã次ã®ã¢ãã¬ã¹
ã®ãã¼ã¿ãèªã¿åºããã¨ãã§ãã¾ããã¢ãã¬ã¹ â0EHâã®ãã¼ã¿ãèªã¿åºããå¾ãããã«æ¬¡ã®ã¢ãã¬ã¹ãèªã¿
åºãå ´åã«ã¯ã¢ãã¬ã¹ â00Hâã®ãã¼ã¿ãèªã¿åºããã¾ãã
AK4616ã¯ã«ã¬ã³ãã¢ãã¬ã¹ãªã¼ãã¨ã©ã³ãã ãªã¼ãã®2ã¤ã®READå½ä»¤ãæã£ã¦ãã¾ãã
2-1. ã«ã¬ã³ãã¢ãã¬ã¹ãªã¼ã
AK4616ã¯å
é¨ã«ã¢ãã¬ã¹ã«ã¦ã³ã¿ãæã£ã¦ãããã«ã¬ã³ãã¢ãã¬ã¹ãªã¼ãã§ã¯ãã®ã«ã¦ã³ã¿ã§æå®ãããã¢
ãã¬ã¹ã®ãã¼ã¿ãèªã¿åºãã¾ããå
é¨ã®ã¢ãã¬ã¹ã«ã¦ã³ã¿ã¯æå¾ã«ã¢ã¯ã»ã¹ããã¢ãã¬ã¹ã®æ¬¡ã®ã¢ãã¬ã¹å¤
ãä¿æãã¦ãã¾ããä¾ãã°ãæå¾ã«ã¢ã¯ã»ã¹(READã§ãWRITEã§ã)ããã¢ãã¬ã¹ã ânâã§ããããã®å¾ã«ã¬
ã³ãã¢ãã¬ã¹ãªã¼ããè¡ã£ãå ´åãã¢ãã¬ã¹ ân+1âã®ãã¼ã¿ãèªã¿åºããã¾ããã«ã¬ã³ãã¢ãã¬ã¹ãªã¼ãã§
ã¯ãAK4616ã¯READå½ä»¤ã®ã¹ã¬ã¼ãã¢ãã¬ã¹(R/W bit = â1â)ã®å
¥åã«å¯¾ãã¦ç¢ºèªå¿çãçæãã次ã®ã¯ããã¯
ããå
é¨ã®ã¢ãã¬ã¹ã«ã¦ã³ã¿ã§æå®ããããã¼ã¿ãåºåããã®ã¡å
é¨ã«ã¦ã³ã¿ã1ã¤ã¤ã³ã¯ãªã¡ã³ããã¾ã。
ãã¼ã¿ãåºåãããå¾ï½¤ãã¹ã¿ã確èªå¿çãçæããåæ¢æ¡ä»¶ãéãã¨ãREADåä½ã¯çµäºãã¾ãã
S
T
A
R/W="1"
R
T
SDA
Slave
S Address
A
C
K
Data(n)
Data(n+1)
Data(n+2)
MA
MA
MA
AC
AC
AC
S
T
K
S
T
K
S
T
K
E
E
E
R
R
R
Figure 34. ã«ã¬ã³ãã¢ãã¬ã¹ãªã¼ã
S
T
O
P
Data(n+x)
P
MA
MN
AC
AA
S
T
K
E
S
T
E
C
K
R
R
2-2. ã©ã³ãã ã¢ãã¬ã¹ãªã¼ã
ã©ã³ãã ã¢ãã¬ã¹ãªã¼ãã«ããä»»æã®ã¢ãã¬ã¹ã®ãã¼ã¿ãèªã¿åºããã¨ãã§ãã¾ããã©ã³ãã ã¢ãã¬ã¹ãªã¼
ãã¯READå½ä»¤ã®ã¹ã¬ã¼ãã¢ãã¬ã¹(R/W bit = â1â)ãå
¥åããåã«ãããã¼ã®WRITEå½ä»¤ãå
¥åããå¿
è¦ãã
ãã¾ããã©ã³ãã ã¢ãã¬ã¹ãªã¼ãã§ã¯æåã«éå§æ¡ä»¶ãå
¥åãã次ã«WRITEå½ä»¤ã®ã¹ã¬ã¼ãã¢ãã¬ã¹(R/W bit
= â0â)ãèªã¿åºãã¢ãã¬ã¹ãé 次å
¥åãã¾ããAK4616ããã®ã¢ãã¬ã¹å
¥åã«å¯¾ãã¦ç¢ºèªå¿çãçæããå¾ã
åéæ¡ä»¶ãREADå½ä»¤ã®ã¹ã¬ã¼ãã¢ãã¬ã¹(R/W bit= â1â)ãå
¥åãã¾ããAK4616ã¯ãã®ã¹ã¬ã¼ãã¢ãã¬ã¹ã®å
¥
åã«å¯¾ãã¦ç¢ºèªå¿çãçæããæå®ãããã¢ãã¬ã¹ã®ãã¼ã¿ãåºåããå
é¨ã¢ãã¬ã¹ã«ã¦ã³ã¿ã1ã¤ã¤ã³ã¯ãª
ã¡ã³ããã¾ãããã¼ã¿ãåºåãããå¾ããã¹ã¿ã確èªå¿çãçæããåæ¢æ¡ä»¶ãéãã¨ãREADåä½ã¯çµäº
ãã¾ãã
S
T
A
R/W ="0"
R
T
S
T
A
R/W="1"
R
T
SDA
Slave
S Address
Sub
Address(n)
Slave
S Address
Data(n)
Data(n+1)
A
A
A
MA
MA
C
K
C
K
C
K
AC
S
T
K
A
S
T
C
K
E
E
R
R
Figure 35. ã©ã³ãã ã¢ãã¬ã¹ãªã¼ã
S
T
O
P
Data(n+x)
P
MA
MN
A
S
T
C
K
A
S
T
A
C
E
EK
R
R
MS1437-J-01
- 34 -
2012/11
|
▷ |