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AK4141 Datasheet, PDF (60/96 Pages) Asahi Kasei Microsystems – NICAM/A2/EIA-J Digital Stereo Decoder | |||
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CONFIDENTIAL
[AK4141]
Addr
Register Name
D7
D6
D5
D4
D3
D2
D1
D0
45H Dem1 Carrier Freq Ctrl 1
DM1F[15:8]
46H Dem1 Carrier Freq Ctrl 0
DM1F[7:0]
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Default
0
0
0
0
0
0
0
0
DM1F[15:0]
Demod 1ãã£ãªã¢å¨æ³¢æ°ãASDãåä½ãã¦ããéã¯ãããã®ãããã¯ç¡è¦ããã¾ãããã®å¤ã¯ãã£ãªã¢
ã0Hzã«ããããã«å¿
è¦ã¨ãããå¨æ³¢æ°ã·ããéã表ããé常ã¯è² ã®å¤ãåãã¾ããæ£ã®å¤ã¯ãã£ãªã¢
ãä¸æããã¾ãã
DM1F = -Fc/Fs x 216 (in 2âs complement)
Fc = åç®ä¸ã®ãã£ãªã¢å¨æ³¢æ° (Hz)
Fs = å
¥åãµã³ãã«ã¬ã¼ã(Hz)ããµã³ãã«ã¬ã¼ãã¬ã¸ã¹ã¿åç
§(Table 45)ãTable 49 ã«Typicalå¤ã表ãã¾ãã
Standard Values for Fc
4.5MHz
5.5MHz
6.0MHz
6.5MHz
DM1F[15:0]
fs=48kHz/32kHz
0xC180
0xB39C
0xACAB
0xA5B9
Table 49. Demod 1 carrier frequency
fs=44.1kHz
0xBBF9
0xACDB
0xA54C
0x9DBD
MS0952-J-03
- 60 -
2013/12
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