參數(shù)資料
型號(hào): AK4523
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: 20BIT STEREO ADC & DAC
中文描述: 20位立體聲ADC
文件頁數(shù): 11/20頁
文件大?。?/td> 161K
代理商: AK4523
ASAHI KASEI
[AK4523]
M0021-E-03
1999/12
- 11 -
n
Audio Serial Interface Format
Data is shifted in/out the SDTI/SDTO pins using SCLK and LRCK inputs. Four serial data modes selected by the DIF0 and
DIF1 pins are supported as shown in Table 2. In all modes the serial data has MSB first, 2’s compliment format. The data
is clocked out on the falling edge of SCLK and latched on the rising edge. For mode 3, if SCLK is 32fs, then the least
significant bits will be truncated.
Mode
0
1
2
3
DIF1
0
0
1
1
DIF0
0
1
0
1
SDTO (ADC)
20bit, MSB justified
20bit, MSB justified
20bit, MSB justified
IIS (I2S)
SDTI (DAC)
16bit, LSB justified
20bit, LSB justified
20bit, MSB justified
IIS (I2S)
L/R
H/L
H/L
H/L
L/H
SCLK (Slave)
3
32fs
3
40fs
3
40fs
32fs or
3
40fs
Table 2. Serial Data Modes
LRCK(i)
SCLK(i:64fs)
SDTO(o)
0
1
2
19
17
18
20
31
0
1
2
19
17
18
20
31
0
19
1
18
0
19
18
3
2
0
19
SDTI(i)
1
14
0
12
11
1
14
0
12
11
SDTO-19:MSB, 0:LSB; SDTI-15:MSB, 0:LSB
Lch Data
Rch Data
Don’t Care
Don’t Care
3
2
SCLK(i:32fs)
SDTO(o)
0
1
2
9
10
12
13
15
0
1
2
9
10
12
13
15
0
19
1
18
8
19
18
8
11 10
19
SDTI(i)
1
6
0
4
3
1
15
0
5
4
11
10
2
5
4
7
6
17
15
14 13
3
11
14
9
5
7
17
1
13
15
30
17
3
3
17
14
13
7
6
3
2
15
14
11
4
5
6
7
9
1
15
13
2
2
Figure 1. Mode 0 Timing
LRCK(i)
SCLK(i: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
19:MSB, 0:LSB
Lch Data
Rch Data
Don’t Care
Don’t Care
8
7
6
Figure 2. Mode 1 Timing
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