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AK4141 Datasheet, PDF (19/96 Pages) Asahi Kasei Microsystems – NICAM/A2/EIA-J Digital Stereo Decoder | |||
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[AK4141]
â ãªã¼ãã£ãªã·ãªã¢ã«ã¤ã³ã¿ã¼ãã§ã¼ã¹ãã©ã¼ããã
IDIF[1-0]ã¨ODIF bitã§SCLK, SCLK4/5, LRCK, LRCK4/5, SDTI[1-5] ,SDTO[1-3]ã®ãªã¼ãã£ãªãã©ã¼ããããã³ã³ãã
ã¼ã«ãããã¨ãã§ãã¾ããã¾ãODIF bitã¨IDIF0ã¯DIF pinã¨ORãã¨ã£ã¦ãã¾ããTDM bit = â1âã«ããã¨TDM modeã«ãªã
ã¾ããSRCå
¥å(SDTI [4-5])ã¯TDMã«é¢ä¿ãªããã¼ãã«ã¢ã¼ãã§åä½ãã¾ããå
¨ã¢ã¼ãã¨ãMSBãã¡ã¼ã¹ãã2âsã³ã³ããª
ã¡ã³ãã®ãã¼ã¿ãã©ã¼ãããã§ãSDTO1-3ã¯SCLK pinã®ç«ä¸ãã§åºåãããSDTI[1-3]ã¯SCLKã®ç«ä¸ããã§ã©ãããã
ã¾ãã SDTI[4-5]ã¯SCLK[4-5]ã®ç«ã¡ä¸ããã§ã©ããããã¾ããSRCãã¤ãã¹ã¢ã¼ãã§ã¯ã SCLK[4-5]ã¨LRCK[4-5]ã¯
LRCKã¨åæããã¦ãã ããã
1. Normal mode: TDM bit = â0â
The TDM bit = â0â ã®ã¨ããã¼ãã«ã¢ã¼ãã«ãªãã以ä¸ã®ãã¼ã¿ãã©ã¼ããããIIS pinã DIF1-0 bitãODIF bitã§é¸æ
ã§ãã¾ãã (Table 7, Table 8)
MSN
pin
IIS
pin
IDIF1
bit
IDIF0
bit
Mode
Input Audio Data
Format
LRCK
L/R
I/O
BICK
speed I/O
0
0
1
L
0
L
1
1
0
20bit Right Justified
ï³ 16fs
1
24bit Right Justified
H/L
2
24bit Left Justified
(register default)
ï³ 48fs
ï³ 48fs
3
24/16bit I2S
L/H
I
32fs or
I
ï³ 48fs
0
H
x
1
2
24bit Right Justified
H/L
3
24/16bit I2S
(register default)
L/H
ï³ 48fs
32fs or
ï³ 48fs
0
0
1
L
0
H
1
1
4
16bit Right Justified
5
24bit Right Justified
H/L
6
7
24bit Left Justified
(register default)
24/16bit I2S
L/H
O
64fs
O
0
H
x
1
6
24bit Right Justified
H/L
7
24/16bit I2S
(register default)
L/H
Table 7. å
¥åãªã¼ãã£ãªãã¼ã¿ãã©ã¼ãããã³ã³ããã¼ã«
(x: Donât care.)
MSN
pin
IIS
pin
ODIF
bit
Mode
Output Audio Data
Format
LRCK
L/R
I/O
SCLK
speed I/O
L
L
0
1
8
24bit Left Justified
(register default)
H/L
ï³ 48fs
9
24/16bit I2S
L/H
32fs or
I
ï³ 48fs
I
H
x
9
24/16bit I2S
(register default)
L/H
32fs or
ï³ 48fs
L
0
10
24bit Left Justified
(register default)
H/L
H
1
11
24/16bit I2S
L/H
O
64fs
O
H
x
11
24/16bit I2S
(register default)
L/H
Table 8. åºåãªã¼ãã£ãªãã¼ã¿ãã©ã¼ãããã³ã³ããã¼ã«
(x: Donât care.)
MS0952-J-03
- 19 -
2013/12
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