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參數(shù)資料
| 型號： | AK4550VT |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | LOW POWER & SMALL PACKAGE 16BIT CODEC |
| 中文描述： | 低功耗 |
| 文件頁數(shù)： | 8/15頁 |
| 文件大?。?/td> | 102K |
| 代理商： | AK4550VT |
ASAHI KASEI
[AK4550]
M0068-E-01
2000/4
- 8 -
OPERATION OVERVIEW
n
System Clock Input
The AK4550 can be input MCLK=256fs, 384fs or 512fs. The input clock applied to the MCLK as internal master clock
is divided into 256fs automatically. The relationship between the external clock applied to the MCLK input and the
desired sample rate is defined in Table 1. The LRCK clock input must be synchronized with MCLK, however the phase
is not critical. *fs is sampling frequency.
When the synchronization is out of phase by changing the clock frequencies during normal operation, the AK4550 may
occur click noise. In case of DAC, click noise is avoided by setting the inputs to “0”.
All external clocks(MCLK, SCLK, LRCK) must be present unless PWAD and PWDA = ”L”. If these clocks are not
provided, the AK4550 may draw excess current and may not possibly operate properly because the device utilizes
dynamic refreshed logic internally.
MCLK
384fs
12.2880MHz
16.9344MHz
18.4320MHz
SCLK
fs
256fs
512fs
32fs
64fs
32.0kHz
44.1kHz
48.0kHz
8.1920MHz
11.2896MHz
12.2880MHz
16.3840MHz
22.5792MHz
24.5760MHz
1.0240MHz
1.4112MHz
1.5360MHz
2.048MHz
2.822MHz
3.072MHz
Table 1. System Clock Example
n
Audio Serial Interface Format
Data is shifted in/out the SDTI/SDTO pins using SCLK and LRCK inputs. The data is MSB first, 2’s compliment.
SDTI(i)
SCLK(i)
(32fs)
LRCK
SDTI(i)
SDTO(o)
SCLK(i)
(64fs)
0
1
10
11
12
13
14
15
0
1
10
11
12
13
14
15
0
1
0
14
1
15
16
17
31
0
1
14
15
16
17
31
0
1
15:MSB, 0:LSB
Lch Data
Rch Data
15
14
6
5
4
3
2
1
0
15
14
15
14
6
5
4
3
2
1
0
15
14
0
15
14
0
Don’t care
Don’t care
15
14
2
1
0
15
14
15
14
2
1
0
SDTO(o)
Figure 1. Audio Interface Timing
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4550VT-E2 | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述: |
| AK4550VTP-E2 | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:16BIT 3V |
| AK4551 | 制造商:AKM 制造商全稱:AKM 功能描述:EVALUATION BOARD REV.C FOR AK4551 |
| AK4551VT | 制造商:AKM 制造商全稱:AKM 功能描述:LOW POWER & SMALL PACKAGE 20BIT CODEC |
| AK4552 | 制造商:AKM 制造商全稱:AKM 功能描述:24bit A/D and D/A converter, |
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