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AK4591VQ Datasheet, PDF (21/41 Pages) Asahi Kasei Microsystems – 入力セレクタ付24bit 4ch ADC + 24bit 6ch DAC | |||
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[AK4591]
3) CONT2: SDINï½²ï¾ï¾ï½°ï¾ï½ªï½°ï½½é¸æä»
Command
Code
Write Read
24h 34h
Name D7
D6
D5
D4
D3
D2
CONT2 ISIF[1] ISIF[0] OSIF[1] OSIF[0] OUT2E_N OUT1E_N
D1
CKSH
D0 Default
0 0000 0000
â D7,D6:ISIF[1:0] SDIN å
¥åã¢ã¼ãé¸æ
ISIFï¾ï½°ï¾ï¾ ISIF[1]
ISIF[0] DIFS=0(CONT0 D5)
DIFS=1(CONT0 D5)
0
0
0
ã¹ã«ã¼
ã¹ã«ã¼
1
0
1
åè©°ã(24bit)
I2Säºæ(24bit)
2
1
0
å¾è©°ã24bit
使ç¨åºæ¥ã¾ãã
3
1
1
å¾è©°ã16bit
使ç¨åºæ¥ã¾ãã
注)OSIFã§ã¹ã«ã¼ãé¸ãã å ´åã¯ISIFã¯ã¹ã«ã¼ãªãã¾ãã
è¨å®å¤æ´ã¯ãã·ã¹ãã ãªã»ããæã®ã¿ã§è¡ã£ã¦ãã ããã
BITCLK48fsæã¯ãISIFã¢ã¼ã2,3ããã¾ãBITCLK32fsæã¯ISIFã¢ã¼ã1,2ã使ç¨ã§ãã¾ãã
â¡ D5,D4:OSIF[1:0] SDINå¤æ
OSIFï¾ï½°ï¾ï¾ OSIF[1] OSIF[0] DIFS=0(CONT0 D5)
DIFS=1(CONT0 D5)
0
0
0
ã¹ã«ã¼
ã¹ã«ã¼
1
0
1
åè©°ã(24bit)
I2Säºæ(24bit)
2
1
0
å¾è©°ã24bit
使ç¨ã§ãã¾ãã
3
1
1
å¾è©°ã16bit
使ç¨ã§ãã¾ãã
注)ISIFã§ã¹ã«ã¼ãé¸ãã å ´åã¯OSIFã¯ã¹ã«ã¼ãªãã¾ãã
ã¢ã¼ã1,2,3ãé¸ãã å ´åãSDINã®å¤ææéã¯ã1ÃLRCLKã§ãã
ã¹ã«ã¼ã使ç¨ãã¦ãSDATO1,SDATO2ãåºåããå ´åãé
延æé(tSISO)ã«æ³¨æãã¦ä¸ããã
è¨å®å¤æ´ã¯ãã·ã¹ãã ãªã»ããæã®ã¿ã§è¡ã£ã¦ãã ããã
BITCLK48fsæã¯ãOSIFã¢ã¼ã2,3ããã¾ãBITCLK32fsæã¯OSIFã¢ã¼ã1,2ã¯ä½¿ç¨ã§ãã¾ããã
⢠D3:OUT2E_N SDATO2åºåé¸æ
0:SDATO2åºå
1: âLâåºå
æ¬ã¬ã¸ã¹ã¿è¨å®å¾ãLRCLKã®ç«ã¡ä¸ãã(I2Sã¯ç«ã¡ä¸ãã)ã§åãæ¿ããã¾ãã
⣠D2:OUT1E_N SDATO1åºåé¸æ
0:SDATO1åºå
1: âLâåºå
æ¬ã¬ã¸ã¹ã¿è¨å®å¾ãLRCLKã®ç«ã¡ä¸ãã(I2Sã¯ç«ã¡ä¸ãã)ã§åãæ¿ããã¾ãã
⤠D1:CKSH å
¥åã¯ããã¯é¸æãã³
0: é常åä½
1: MCLKã1/2åå¨ãã¾ã
CKSH=1ã®æä¸è¡¨ã®ããã«ãªãã¾ããè¨å®å¤æ´ã¯ãã·ã¹ãã ãªã»ããæã«è¡ã£ã¦ãã ããã
DFS DFS[1] DFS[0] 対å¿fs
MCLK
ï¾ï½°ï¾ï¾
0
0
0
1
0
1
fs=48kHz~8kHz
fs=12kHz~8kHz
詳ããã¯ã(4)ã·ã¹ãã ã¯ããã¯ãåç
§ãã¦ãã ããã
⥠D0:0ãå
¥åãã¦ä¸ããã
注ï¼â ï½â¤ã®è¨å®å¤ã®ä¸ç·é¨ã¯åæå¤ã表ãã¾ãã
CKS=0
512fs
2048fs
CKS=1
768fs
3072fs
[MS0295-J-01]
- 21 -
2012/12
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