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參數(shù)資料
| 型號： | AK4555 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | Low Power & Small Package 20bit ツヒ CODEC |
| 中文描述： | 低功耗 |
| 文件頁數(shù)： | 10/17頁 |
| 文件大?。?/td> | 200K |
| 代理商： | AK4555 |
ASAHI KASEI
[AK4555]
MS0363-E-01
2005/08
- 10 -
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. The
following formats are also valid when SCLK is 64fs: 16-bit data followed by four zeros and 18-bit data followed by two
zeros.
LRCK
SCLK(64fs
SDTO(o)
0
1
2
3
16
17
18
31
0
1
2
0
19
1
18
3
19 18
SDTI(i)
16bit
SDTI(i)
18bit
SDTI(i)
20bit
14
15
14
15
Lch Data
Rch Data
Don’t Care
4
0
20
19
30
2
31
30
1
0
3
16
17
3
Don’t Care
0
1
16
17
0
16
17
Don’t Care
2
1
0
Don’t Care
2
1
18
19
2
18
19
Don’t Care
4
3
1
0
Don’t Care
3
1
21
18
4
20
19
2
0
2
4
0
21
SCLK(32fs)
SDTI(i)
0
1
2
3
8
9
10
15
0
1
2
0
15
1
14
7
8
12
11
14
6
5
4
3
13
3
2
1
0
8
9
10
15
7
8
12
11
14
6
5
4
13
3
2
1
0
15
14
SDTO(o)
0
15 14
7
8
6
5
4
3
2
1
0
7
8
6
5
4
3
2
1
0
15
14
0
Figure 4. Audio Interface Timing
De-emphasis filter
The DAC of AK4555 includes the digital de-emphasis filter (tc=50/15
μ
s) by IIR filter. This filter corresponds to three
frequencies (32kHz, 44.1kHz and 48kHz). The de-emphasis filter selected by DEM0 and DEM1 pins is enabled for input
audio data. The de-emphasis is also disabled at DEM1 pin = “L” and DEM0 pin = “H”.
DEM1 pin
DEM0 pin
L
L
L
H
H
L
H
H
Table 3. De-emphasis filter control
Digital High Pass Filter
The AK4555 has a Digital High Pass Filter (HPF) for DC-offset cancel. The cut-off frequency of the HPF is 3.4Hz at
fs=44.1kHz and the frequency response at 20Hz is
0.12dB. It also scales with the sampling frequency (fs).
Mode
44.1kHz
OFF
48kHz
32kHz
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK4555VT | Low Power & Small Package 20bit ツヒ CODEC |
| AK4556 | 3V 192kHz 24Bit ツヒ CODEC |
| AK4556VT | 3V 192kHz 24Bit ツヒ CODEC |
| AK4560A | 16bit CODEC with ALC and MIC/HP/SPK-Amps |
| AK4560AVQ | 16bit CODEC with ALC and MIC/HP/SPK-Amps |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4555VT | 制造商:AKM 制造商全稱:AKM 功能描述:Low Power & Small Package 20bit ツヒ CODEC |
| AK4555VTP-E2 | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述: |
| AK4556 | 制造商:AKM 制造商全稱:AKM 功能描述:3V 192kHz 24Bit ツヒ CODEC |
| AK4556VT | 制造商:AKM 制造商全稱:AKM 功能描述:3V 192kHz 24Bit ツヒ CODEC |
| AK4556VTP-E2 | 功能描述:IC STEREO CODEC 24BIT 20TSSOP 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 |
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