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AK4616VQ Datasheet, PDF (18/46 Pages) Asahi Kasei Microsystems – 24bit 3ch/5ch Audio CODEC with Mic Amplifier | |||
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[AK4616]
â ãã£ã¸ã¿ã«HPF
ADCã¯DCãªãã»ãããã£ã³ã»ã«ã®ããã«ãã£ã¸ã¿ã«HPFãå
èµãã¾ãã HPFã®ã«ãããªãå¨æ³¢æ°ã¯ã
fs=48kHzã®æ 3.7Hzã§ãµã³ããªã³ã°ã¬ã¼ã(fs) ã«æ¯ä¾ãã¾ãã
â ãªã¼ãã£ãªã¤ã³ã¿ãã§ã¼ã¹ãã©ã¼ããã
(1) Stereo Mode
TDM bit =â0âã®ã¨ãã10種é¡ã®ãã¼ã¿ãã©ã¼ããã(Table 5)ãDIF2-0 bitã§é¸æã§ãã¾ããå
¨ã¢ã¼ãã¨ãMSB
ãã¡ã¼ã¹ãã2âsã³ã³ããªã¡ã³ãã®ãã¼ã¿ãã©ã¼ãããã§ãSDTO1-2 ã¯BICKã®ç«ã¡ä¸ããã§åºåãããSDTI1-3
ã¯BICKã®ç«ã¡ä¸ããã§ã©ããããã¾ãã
SDTI pinã®å
¥åãã©ã¼ãããã®ãã¡ãmode 2/3/4/7/8/9ã16 â¼ 20 bitã§ä½¿ã£ãå ´åã¯ãã¼ã¿ã®ãªãLSBã«ã¯ â0â ã
å
¥åãã¦ä¸ããã
Mode
0
1
2
3
4
TDM
0
0
0
0
0
DIF2 DIF1 DIF0 SDTO1-2
0
0
0
24bit, Left
justified
0
0
1
24bit, Left
justified
0
1
0
24bit, Left
justified
0
1
1
24bit, Left
justified
1
0
0 24bit, I2S
SDTI1-3
16bit, Right
justified
20bit, Right
justified
24bit, Right
justified
24bit, Left
justified
24bit, I2S
LRCK
I/O
H/L I
H/L I
H/L I
H/L I
L/H I
BICK
I/O
⥠32fs I
⥠48fs I
⥠48fs I
⥠48fs I
⥠48fs I
(default)
Table 5. ãªã¼ãã£ãªãã¼ã¿ãã©ã¼ããã (Stereo mode)
(2) TDM Mode
TDM bitãè¨å®ãããã¨ã«ããTDM I/Fãã©ã¼ãããã使ç¨ã§ãã¾ãã5種é¡ã®ãã¼ã¿ãã©ã¼ãããã DIF2-0
bitã§é¸æã§ããå
¨ã¢ã¼ãã¨ãMSBãã¡ã¼ã¹ãã2âsã³ã³ããªã¡ã³ãã®ãã¼ã¿ãã©ã¼ãããã§ãSDTO1ã¯BICK
ã®ç«ã¡ä¸ããã§åºåãããSDTI1/2ã¯BICKã®ç«ã¡ä¸ããã§ã©ããããã¾ãã
TDM256 Mode (fs=48kHz)㯠TDM bit = â1âã§é¸æã§ãã¾ã(Table 6)ãSDTO1 pin ã«ã¯å
¨ADC (3ch)ã®ãã¼ã¿ãåº
åããã¾ããSDTO2 pin 㯠âLâåºåã§ããSDTI1 pinã«ã¯å
¨DAC (6ch)ã®ãã¼ã¿ãå
¥åãã¾ããSDTI2-3 pinã¸ã®
å
¥åãã¼ã¿ã¯ç¡è¦ããã¾ããBICKã¯256fsåºå®ãLRCKã® âHâå¹
ã âLâå¹
ã¯1/256fs(min)ã§ãã
Mode
5
6
7
8
9
TDM
1
1
1
1
1
DIF2 DIF1 DIF0
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
SDTO1-2
24bit, Left
justified
24bit, Left
justified
24bit, Left
justified
24bit, Left
justified
24bit, I2S
SDTI1-3
16bit, Right
justified
20bit, Right
justified
24bit, Right
justified
24bit, Left
justified
24bit, I2S
LRCK
I/O
â
I
â
I
â
I
â
I
â
I
BICK
I/O
256fs I
256fs I
256fs I
256fs I
256fs I
Table 6. ãªã¼ãã£ãªãã¼ã¿ãã©ã¼ããã (TDM256 mode)
MS1437-J-01
- 18 -
2012/11
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