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AK4414EQ Datasheet, PDF (24/51 Pages) Asahi Kasei Microsystems – High Performance 120dB 32-Bit 4ch DAC | |||
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[AK4414]
(2) Serial Control Mode (PSN pin = âLâ)
ã·ãªã¢ã«ã³ã³ããã¼ã«ã¢ã¼ãã§ã¯20 種é¡ã®ãã©ã¼ããã (Table 16) ã DIF2-0 bit ã¨TDM1-0 bit ã§é¸æã§ãã¾
ããDIF2-0 bitã®åæå¤ã¯ â010âã§ããã·ãªã¢ã«ã³ã³ããã¼ã«ã¢ã¼ãæã¯DIF1 pinã®è¨å®ã¯ç¡å¹ã§ãã
ã·ãªã¢ã«ã³ã³ããã¼ã«ã¢ã¼ãæãTDM0 bitã â1âã«ãTDM1 bit ã â0â è¨å®ããã¨ããªã¼ãã£ãªI/Fã¯TDM256
ã¢ã¼ã(Table 16)ã«ãªããSDTI1 pinã«å
¨8chã®DACãã¼ã¿ãå
¥åãã¾ã (Figure 15)ãSDTI2ã¸ã®å
¥åãã¼ã¿ã¯ç¡
è¦ããã¾ããBICKã¯256fsåºå®ãLRCKã® âHâå¹
ã âLâå¹
ã¯1/256fs(min)ã§ãããã¼ã¿ãã©ã¼ãããã¯MSBãã¡
ã¼ã¹ãã2âs complementã§ãSDTI1 pin ã¸ã®å
¥åãã¼ã¿ã¯BICKã®ç«ã¡ä¸ããã§ã©ããããã¾ãã8chã®DACã
ã¼ã¿ã¯2ã¤ã®AK4414ã«ãããã³ã°å¯è½ã§ãã(Table 17)
TDM128ã¢ã¼ã(TDM0 bit = â1â, TDM1 bit = â1â)ã§ã¯ãSDTI1 pinã«DAC (L1, R1, L2, R2)ãSDTI2 pinã«DAC (L3,
R3, L4, R4)ã® å4chã®ãã¼ã¿ãå
¥åãã¾ããBICKã¯128fsåºå®ã§ãããã¼ã¿ãã©ã¼ãããã¯MSBãã¡ã¼ã¹ãã
2âs complementã§ãSDTI1-2 pin ã¸ã®å
¥åãã¼ã¿ã¯BICKã®ç«ã¡ä¸ããã§ã©ããããã¾ãã8chã®DACãã¼ã¿ã¯2
ã¤ã®AK4414ã«ãããã³ã°å¯è½ã§ãã(Table 17)
Mode
0
1
2
3
Normal
4
5
6
7
8
9
TDM256
10
11
12
13
14
15
TDM128
16
17
18
19
TDM1 TDM0 DIF2 DIF1 DIF0 SDTI Format
0
0
0 16-bit LSB justified
0
0
1 20-bit LSB justified
0
1
0 24-bit MSB justified
0
1
1 24-bit I2S compatible
-
0
1
0
0 24-bit LSB justified
1
0
1 32-bit LSB justified
1
1
0 32-bit MSB justified
1
1
1 32-bit I2S compatible
0
0
0 N/A
0
0
1 N/A
0
1
0 24-bit MSB justified
0
1
1 24-bit I2S compatible
0
1
1
0
0 24-bit LSB justified
1
0
1 32-bit LSB justified
1
1
0 32-bit MSB justified
1
1
1 32-bit I2S compatible
0
0
0 N/A
0
0
1 N/A
0
1
0 24-bit MSB justified
0
1
1 24-bit I2S compatible
1
1
1
0
0 24-bit LSB justified
1
0
1 32-bit LSB justified
1
1
0 32-bit MSB justified
1
1
1 32-bit I2S compatible
Table 16. ãªã¼ãã£ãªI/Fãã©ã¼ããã (Serial Mode)
LRCK
H/L
H/L
H/L
L/H
H/L
H/L
H/L
L/H
BICK
â¥32fs
â¥40fs
â¥48fs
â¥48fs
â¥48fs
â¥64fs
â¥64fs
â¥64fs
â 256fs
â 256fs
â 256fs
â 256fs
â 256fs
â 256fs
â 128fs
â 128fs
â 128fs
â 128fs
â 128fs
â 128fs
MS1476-J-00
- 24 -
2013/01
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