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AK4141 Datasheet, PDF (17/96 Pages) Asahi Kasei Microsystems – NICAM/A2/EIA-J Digital Stereo Decoder | |||
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[AK4141]
åä½èª¬æ
â ã·ã¹ãã ã¯ããã¯
AK4141ãåä½ãããã®ã«å¿
è¦ãªã¯ããã¯ã¯MCLK(or XTI), LRCK, SCLKã§ããé常åä½æã«MCLK(or XTI)
ãæ¢ãã¦ã¯ããã¾ãããã¾ãMCLK(or XTI)ã¨LRCKã¯åæããå¿
è¦ã¯ããã¾ããä½ç¸ãåãããå¿
è¦ã¯ãã
ã¾ãããAK4141ã®åä½ã«ã¯ãã¼ãä¸ã®æ°´æ¶çºæ¯å¨ãããã¯å¤é¨ã¯ããã¯ãMCKIã¨ãã¦ä½¿ã£ã¦ãã¾ããã¯ã
ãã¯ãæ¢ããå ´åã¯ãã¯ã¼ãã¦ã³ç¶æ
(PDN pin = âLâ)ã¾ãã¯ãªã»ããç¶æ
(RSTN1 bit = â0â)ã«ãã¦ä¸ãããé»
æºONçã®ãªã»ãã解é¤æã¯MCLK(or XTI), LRCKãå
¥åãããã¾ã§ãã¯ã¼ãã¦ã³ç¶æ
ã§ãã
AK4141ã«ã¯ãã¹ã¿ã¢ã¼ã(SCLK, LRCK=output)ã¨ã¹ã¬ã¼ãã¢ã¼ã(SCLK, LRCK=input)ããããMSN pin = âHâ
ã®æã«ãã¹ã¿ã¢ã¼ããMSN pin = âLâã®æã«ã¹ã¬ã¼ãã¢ã¼ãã¨ãªãã¾ããSRCã¤ã³ããã(SCLK4/5,LRCK4/5)
ã¯å¸¸ã«ã¹ã¬ã¼ãã¢ã¼ãã§ãããéåæã§åä½ããããã¨ãå¯è½ã§ãã
PDN pin
L
H
MSN pin
SCLK, LRCK
SCLK4/5, LRCK4/5
L
Input (slave mode)
Input (slave mode)
H
Output âLâ (master mode) Input (slave mode)
L
Input (slave mode)
Input (slave mode)
H
Output (master mode)
Input (slave mode)
note: CKS2-0 bitãå
¨ã¦defaultã®å ´å
Table 1. ãã¹ã¿/ã¹ã¬ã¼ãã¢ã¼ã
MSN pinã¨CKS2-0 bitã§ä»¥ä¸ã®ã¯ããã¯å¨æ³¢æ°ãé¸æãããã¨ãã§ãã¾ã(Table 2)ãå¤é¨ã¯ãã㯠(Xâtalã¾ãã¯MCKI)
ã¯ãã¯ã¼ãã¦ã³ç¶æ
以å¤ã®ç¶æ
ã§ã¯æ¢ããªãã§ãã ããã ã¯ããã¯ãå
¥åãããã¾ã§ã¯ãã¯ã¼ãã¦ã³ç¶æ
ã«ãªãã¾ãã
MSN pin
L
L
L
L
L
L
L
L
H
H
CKS2 bit
0
0
0
0
1
1
1
1
0
1
CKS1 bit
0
0
1
1
0
0
1
1
x
x
CKS0 bit
Master
/Slave
Master Clock Speed
0
Slave
128fs, 192fs, 256fs, 384fs, 512fs, 768fs, 1024fs
(register default)
1
Master 128fs
0
Master 192fs
1
Master 256fs
0
Master 384fs
1
Master 512fs
0
Master 768fs
1
Master 1024fs
x
Master 256fs
(register default)
x
Master 1024fs
Table 2. ã·ã¹ãã ã¯ããã¯
(x: Donât care.)
LRCK
fs
32.0kHz
44.1kHz
48.0kHz
128fs
4.0960
5.6448
6.1440
MCLK (MHz)
192fs
256fs
384fs
512fs
6.1440 8.1920 12.2880 16.3840
7.5264 11.2896 16.9344 22.5792
9.2160 12.2880 18.4320 24.5760
Table 3. ã·ã¹ãã ã¯ããã¯ä¾
768fs
24.5760
33.8688
36.8640
1024fs
32.7680
45.1584
49.1520
MS0952-J-03
- 17 -
2013/12
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