參數(shù)資料
型號(hào): AK4566
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: 20bit Stereo CODEC with built-in IPGA & HP-AMP
中文描述: 20位立體聲編解碼器內(nèi)置單親遺傳算法
文件頁數(shù): 15/45頁
文件大?。?/td> 454K
代理商: AK4566
ASAHI KASEI
AKM CONFIDENTIAL
[AK4566]
REV 0.5
2002/2
- 15 -
n
Serial Data Interface
The AK4566 interfaces with external system by using BICK, LRCK, SDTO and SDTI pins. Four data formats are
available and are selected by setting DIF1 and DIF0 bits (Table 3). Mode 0 of SDTI is compatible with existing 16bit
DACs and digital filters. Mode 1 of SDTI is a 20bit version of Mode 0. Mode 2 of SDTI is similar to AKM ADCs and
many DSP serial ports. Mode 3 is compatible with the I
2
S serial data protocol. In Mode 2 and 3 of SDTI, 16bit data
followed by four zeros also could be input, 18bit data followed by two zeros also could be input. In all modes, the serial
data is MSB first and 2’s complement format.
Mode
DIF1
DIF0
SDTO
0
0
0
20bit, MSB justified
16bit, LSB justified
1
0
1
20bit, MSB justified
20bit, LSB justified
2
1
0
20bit, MSB justified
20bit, MSB justified
3
1
1
IIS (I
2
S)
IIS (I
2
S)
Table 3. Audio Data Format
LRCK
SDTI
BICK
32fs
40fs
40fs
LRCK
H/L
H/L
H/L
L/H
Default
32fs or
40fs
BICK(64fs)
SDTO(o)
0
1
2
16
17
18
20
21
31
0
1
2
31
0
19
1
18
0
19 18
19
SDTI(i)
1
14
0
15
12 11
1
0
Lch Data
Rch Data
Don’t Care
Don’t Care
4
3
2
1
13
16
17
18
14
15
1
13
20
21
12 11
4
3
2
0
BICK(32fs)
SDTI(i)
0
1
2
8
9
10
15
0
1
2
0
15
1
14
7
8
12
11
14
6
5
4
13
3
2
1
0
8
9
10
15
7
8
12
11
14
6
5
4
13
3
2
1
0
15 14
15
SDTO(o)
19 18
11
12
10
9
8
7
6
5
4
19
19 18
11
12
10
9
8
7
6
5
4
19
19
Figure 10. Mode 0 Timing
LRCK
BICK(64fs)
SDTO(o)
0
1
2
12
13
14
20
21
31
0
1
2
12
13
14
20
21
31
0
19
1
18
0
19 18
8
7
6
0
19
SDTI(i)
1
18
0
19
12 11
1
18
0
19
12 11
Lch Data
Rch Data
Don’t Care
Don’t Care
8
7
6
Figure 11. Mode 1 Timing
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