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參數(shù)資料
| 型號： | AK4682EQ |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | Multi-channel CODEC with 2Vrms Stereo Selector |
| 中文描述： | 多通道選擇與2Vrms的立體聲編解碼器 |
| 文件頁數(shù)： | 29/43頁 |
| 文件大小： | 667K |
| 代理商： | AK4682EQ |
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[AK4682]
MS0610-E-01
2007/07
- 29 -
■
Reset Function
When RSTN bit = “0”, ADC and DACs are powered-down but the internal register are not initialized. The DAC outputs
go to AVDD2 voltage and SDTOB pins go to “L”. Because some click noise occurs, the analog output should muted
externally if the click noise influences system application. The Figure 13 shows the power-up sequence.
RSTN bit
ADC Internal
State
Normal Operation
Digital Block Power-down
Normal Operation
Don’t care
GD
GD
Clock In
MCLK,LRCK,SCLK
ADC In
(Analog)
“0”data
ADC Out
(Digital)
Normal Operation
Normal Operation
DAC Internal
State
“0”data
DAC In
(Digital)
DAC Out
(Analog)
GD
GD
(2)
(2)
(3)
(4)
(6)
(6)
(7)
Internal
RSTN bit
Digital Block Power-down
1~2/fs (8)
4~5/fs (8)
(5)
516/fs
Init Cycle
(1)
Notes:
(1) The analog part of ADC is initialized after exiting the reset state.
(2) Digital output corresponding to analog input and analog output corresponding to digital input have the group
delay (GD).
(3) ADC output is “0” data at the power-down state.
(4) Click noise occurs when the internal RSTN bit becomes “1”. Please mute the digital output externally if the click
noise influences system application.
(5) When RSTN bit = “0”, the analog outputs go to AVDD2 voltage.
(6) Click noise occurs at 4
～
5/fs after RSTN bit becomes “0”, and occurs at 1
～
2/fs after RSTN bit becomes “1”. This
noise is output even if “0” data is input.
(7) The external clocks (
MCLKA (MCLKB),
BICKA (BICKB), LRCKA (LRCKB)) can be stopped in the reset mode.
When exiting the reset mode, “1” should be written to RSTN bit after the external clocks (
MCLKA (MCLKB),
BICKA (BICKB), LRCKA (LRCKB)) are fed.
(8) There is a delay about 4~5/fs from RSTN bit “0” to the internal RSTN bit “0”.
Figure 13. Reset sequence example
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PDF描述 |
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| AK4683_07 | Asynchronous Multi-Channel Audio CODEC with DIR/T |
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| AK4683 | Asynchronous Multi-Channel Audio CODEC with DIR/T |
| AK4702EQ | 2ch DAC with AV SCART switch |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AK4683 | 制造商:AKM 制造商全稱:AKM 功能描述:Asynchronous Multi-Channel Audio CODEC with DIR/T |
| AK4683_07 | 制造商:AKM 制造商全稱:AKM 功能描述:Asynchronous Multi-Channel Audio CODEC with DIR/T |
| AK4683_10 | 制造商:AKM 制造商全稱:AKM 功能描述:Asynchronous Multi-Channel Audio CODEC with DIR/T |
| AK4683EQ | 制造商:AKM 制造商全稱:AKM 功能描述:Asynchronous Multi-Channel Audio CODEC with DIR/T |
| AK4683EQP | 制造商:AKM Semiconductor Inc 功能描述:Audio Codec 2ADC / 4DAC 24-Bit 64-Pin LQFP |
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