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| AK4141 Datasheet, PDF (1/96 Pages) Asahi Kasei Microsystems – NICAM/A2/EIA-J Digital Stereo Decoder | |||
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[AK4141]
AK4141
NICAM/A2/EIA-J ãã£ã¸ã¿ã«é³å£°å¤éãã³ã¼ã
æ¦è¦
AK4141ã¯NICAM/A2/EIA-Jè¦æ ¼ã«å¯¾å¿ãããã£ã¸ã¿ã«TVåãé³å£°å¤éãã³ã¼ãã§ããAK4141ã¯ãã£ã¸
ã¿ã«é³å£°å¤éãã³ã¼ãå¦çãè¡ããã¨ã«ããç¡èª¿æ´åã¨å¤ä»ãç´ åã®åæ¸ãé«ããªã¼ãã£ãªç¹æ§ãå®ç¾
ãã¾ããAK4141ã¯ããã£ã¸ã¿ã«ãã¥ã¼ãçã®éåæã®ãã¼ã¿ãæ±ãããã®SRCãå
åºåç¨ã®DITã5band
ã¤ã³ã©ã¤ã¶ãã¹ãã¬ãªæ強調çã®ãµã¦ã³ãããã»ãã·ã³ã°æ©è½ãå
èµãã¾ãã主è¦ãªãªã¼ãã£ãªãã¼ã¿
ãã©ã¼ããã(MSB/LSB justified, I2S, TDM)ã«å¯¾å¿ãDSPãADC, DACã¨å®¹æã«æ¥ç¶ãå¯è½ã¨ãªã£ã¦ã
ãããã£ã¸ã¿ã«TVãDVRçã®AVã¢ããªã±ã¼ã·ã§ã³ã«æé©ã§ãã
ç¹é·
1. é³å£°å¤éãã³ã¼ã
ï¯ ã»ã¬ã¯ã¿ä»ãé³å£°ä¸éå¨æ³¢æ°(SIF)å
¥ååã³FM復調
ï¯ SIFå
¥åç¨èªåã²ã¤ã³èª¿æ´æ©è½(AGC: 100mVpp ~ 1Vpp)
ï¯ ç¡èª¿æ´ãã£ã¸ã¿ã«é³å£°å¤éãã³ã¼ã
EIA-J
NICAM: B/G, L, I, D/K (+ FM/AM Mono)
A2: B/G, D/K1, D/K2, D/K3, M/N
ï¯ é³å£°å¤éè¦æ ¼èªå/æååãæ¿ãæ©è½
ï¯ é³å£°ã¢ã¼ã(ã¹ãã¬ãª/ã¢ãã©ã«/2é³å£°)èªå/æååãæ¿ãæ©è½
ï¯ èªååãæ¿ãç¨ä¿¡å·å質æ¤åº
ï¯ é«FMå¤èª¿åº¦å¯¾å¿(max: 540kHz)
ï¯ ãµã³ããªã³ã°ã¬ã¼ã(fs): 32k/44.1k/48kHz
2. ãªã¼ãã£ãªããã»ãã·ã³ã°(ã¹ãã¬ãª2系統対å¿)
ï¯ èªåã¬ãã«èª¿æ´(ALC)
ï¯ ãã©ã³ã¹
ï¯ 5ãã³ãã¤ã³ã©ã¤ã¶
ï¯ ã¹ãã¬ãªæ強調
ï¯ ã½ãããã¥ã¼ãä»ããã£ã¸ã¿ã«ããªã¥ã¼ã æ©è½(+12dB~-115dB, 0.5dB/step)
ï¯ ãªã¼ãã£ãªãã¼ã¿ã¤ã³ã¿ã¼ãã§ã¼ã¹:
I2Så
¥å: 5系統(2系統ã¯SRCé¸æå¯), I2Såºå: 3系統
ãã¹ã¿/ã¹ã¬ã¼ãã¢ã¼ã対å¿
ãªã¼ãã£ãªãã©ã¼ããã: 24bit Left justified /Right justified / I2S or TDM
3. éåæãµã³ããªã³ã°ã¬ã¼ãã³ã³ãã¼ã¿(SRC)
ï¯ 8k~192kHz å
¥å
ï¯ fso/fsi = 1/6~6
4. ã¹ã«ã¼åãæ¿ãä»ããã£ã¸ã¿ã« ãªã¼ãã£ãª ã¤ã³ã¿ã¼ãã§ã¼ã¹ ãã©ã³ã¹ããã¿ (DIT)
5. å
èµæ°´æ¶çºæ¯åè·¯
6. ãã¹ã¿ã¯ããã¯: 256fs/384fs/512fs/768fs/1024fs
7. I2C-bus ã³ã³ããã¼ã«ã¤ã³ã¿ãã§ã¼ã¹
8. é»æºé»å§: DVDD=1.8V±0.1V, AVDD=3.3V±0.3V, TVDD=1.7V~3.6V
9. Ta: -20 ~ 85ï°C
10. ããã±ã¼ã¸: 48pin LQFP
MS0952-J-03
-1-
2013/12
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