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參數(shù)資料
| 型號(hào)： | AK4632VN |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | 16-Bit ツヒ Mono CODEC with ALC & MIC/SPK/Video-AMP |
| 中文描述： | 16位ツヒALC的單聲道編解碼器 |
| 文件頁(yè)數(shù)： | 62/70頁(yè) |
| 文件大小： | 639K |
| 代理商： | AK4632VN |
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ASAHI KASEI
[AK4632]
MS0396-E-00
2005/06
- 62 -
Speaker-amp Output
FS2-0 bits
(Addr:05H,
D5, D2-0)
DVOL7-0 bits
(Addr:0AH, D7-0)
PMDAC bit
(Addr:00H, D2)
PMSPK bit
(Addr:00H, D4)
XXXX
XXXX
0001100
XXXXXXX
SPP pin
Normal Output
SPPS bit
(Addr:02H, D7)
Hi-Z
Hi-Z
SPN pin
Normal Output
Hi-Z
Hi-Z
SVDD/2
SVDD/2
(1)
(4)
X
0
(3)
ALC2 bit
(Addr:07H, D6)
(5)
(6)
(9)
(7)
(2)
DACM bit
(Addr:02H, D3)
ALC2S bit
(Addr:02H, D5)
(8)
Example:
PLL, Master Mode
Audio I/F Format :DSP Mode, BCKP=MSBS= “0”
Sampling Frequency: 8kHz
Digital Volume: -8dB
ALC2 : Enable
(2) Addr:02H, Data:28H
(3) Addr:07H, Data:40H
(1) Addr:05H, Data:00H
(4) Addr:0AH, Data:28H
(5) Addr:00H, Data:54H
(6) Addr:02H, Data:A8H
(7) Addr:02H, Data:28H
Playback
(8) Addr:00H, Data:40H
Figure 51. Speaker-Amp Output Sequence
<Example>
At first, clocks should be supplied according to
“
Clock Set Up
”
sequence.
(1) Set up a sampling frequency (FS3-0 bits). When the AK4632 is PLL mode, DAC and Speaker-Amp should be
powered-up in consideration of PLL lock time after a sampling frequency is changed.
(2) Set up the path of
“
DAC
SPK-Amp
”
DACM = ALC2S bit:
“
0
”
→
“
1
”
(3) Set up the ALC2 Enable/Disable
(4) Set up the digital volume (Addr: 0AH)
After DAC is powered-up, the digital volume changes from default value (0dB) to the register setting value by
the soft transition.
(5) Power Up of DAC and Speaker-Amp: PMDAC bit = PMSPK bit =
“
0
”
→
“
1
”
When ALC2 bit =
“
1
”
, the ALC2 is disabled (ALC2 gain is fiexed to
“
–2dB
”
) during the initilization cycle
(512/fs = 64ms @ fs=8kHz, ROTM bit =
“
0
”
) and the ALC2 starts from
“
–2dB
”
after completing the
initilization cycle.
(6) Exit the power-save-mode of Speaker-Amp: SPPS bit =
“
0
”
→
“
1
”
“
(6)
”
time depends on the time constant of input impedance of MIN pin and capacitor between MIN pin and
MOUT pin. If Speaker-Amp output is enabled before MIN-Amp (ALC2) becomes stable, pop noise may occur.
e.g. Input Impedance of MIN pin =36k
(max), C=0.1
μ
F: Recommended wait time is more than 5
τ
= 18ms.
(7) Enter the power-save-mode of Speaker-Amp: SPPS bit =
“
1
”
→
“
0
”
(8) Disable the path of
“
DAC
SPK-Amp
”
DACM = ALC2S bit:
“
1
”
→
“
0
”
(9) Power Down DAC and Speaker-Amp: PMDAC bit = PMSPK bit =
“
1
”
→
“
0
”
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK4633VN | 16bit mono CODEC with MIC/SPK amplifier. |
| AK4633 | 16-Bit Mono CODEC with ALC & MIC/SPK-AMP |
| AK4640 | 16BIT CODEC WITH MIC /HP/SPK-AMPl |
| AK4640VG | 16BIT CODEC WITH MIC /HP/SPK-AMPl |
| AK4640VN | 16BIT CODEC WITH MIC /HP/SPK-AMPl |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4633 | 制造商:AKM 制造商全稱:AKM 功能描述:16-Bit Mono CODEC with ALC & MIC/SPK-AMP |
| AK4633ENP-L | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:LOW COST MONO CODEC WITH SPK A |
| AK4633VN | 制造商:AKM 制造商全稱:AKM 功能描述:16bit mono CODEC with MIC/SPK amplifier. |
| AK4633VNP-L | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:LOW COST MONO CODEC WITH SPK A |
| AK4634 | 制造商:AKM 制造商全稱:AKM 功能描述:16-Bit Mono CODEC with ALC & MIC/SPK-AMP |
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