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參數(shù)資料
| 型號(hào)： | AK4551VT |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | LOW POWER & SMALL PACKAGE 20BIT CODEC |
| 中文描述： | 低功耗 |
| 文件頁(yè)數(shù)： | 8/15頁(yè) |
| 文件大?。?/td> | 109K |
| 代理商： | AK4551VT |
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ASAHI KASEI
[AK4551]
MS0029-E-00
2000/5
- 8 -
OPERATION OVERVIEW
n
System Clock Input
The AK4551 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 AK4551 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 AK4551 may draw excess current and may not possibly operate properly because the device utilizes dynamic
refreshed logic internally.
MCLK
fs
256fs
384fs
32.0kHz
8.1920MHz
12.2880MHz
16.3840MHz
44.1kHz
11.2896MHz
16.9344MHz
22.5792MHz
48.0kHz
12.2880MHz
18.4320MHz
24.5760MHz
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.
LRCK
SCLK
512fs
32fs
64fs
1.0240MHz
1.4112MHz
1.5360MHz
2.048MHz
2.822MHz
3.072MHz
SDTI(i)
SCLK(i)
(64fs)
19:MSB, 0:LSB
Lch Data
Rch Data
Don’t care
19 18
SDTO(o)
0
12
1
13
14
20
31
0
1
21
2
8
7
6
0
19 18
12
1
0
11
12
13
14
20
31
0
1
21
19 18
8
7
6
0
19
Don’t care
19 18
12
1
0
11
2
Figure 1. Audio Interface Timing
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| AK4554 | Low Power & Small Package 16bit ツヒ CODEC |
| AK4554VT | Low Power & Small Package 16bit ツヒ CODEC |
| AK4555 | Low Power & Small Package 20bit ツヒ CODEC |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4552 | 制造商:AKM 制造商全稱:AKM 功能描述:24bit A/D and D/A converter, |
| AK4552VT | 制造商:AKM 制造商全稱:AKM 功能描述:3V 96KHZ 24BIT CODEC |
| AK4552VTP-E2 | 功能描述:IC STEREO CODEC 24BIT 16TSSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:PCM 數(shù)據(jù)接口:PCM 音頻接口 分辨率（位）:15 b ADC / DAC 數(shù)量:1 / 1 三角積分調(diào)變:是 S/N 比，標(biāo)準(zhǔn) ADC / DAC (db):- 動(dòng)態(tài)范圍，標(biāo)準(zhǔn) ADC / DAC (db):- 電壓 - 電源，模擬:2.7 V ~ 3.3 V 電壓 - 電源，數(shù)字:2.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:80-VFBGA 供應(yīng)商設(shè)備封裝:80-BGA MICROSTAR JUNIOR（5x5） 包裝:帶卷 (TR) 其它名稱:296-21257-2 |
| AK4554 | 制造商:AKM 制造商全稱:AKM 功能描述:Low Power & Small Package 16bit ΔΣ CODEC |
| AK4554VL | 功能描述:IC CODEC 16BIT LOW POWER 制造商:akm semiconductor inc. 系列:* 零件狀態(tài):上次購(gòu)買時(shí)間 標(biāo)準(zhǔn)包裝:1,000 |
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