參數資料
型號： AK4643EN
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類： Codec
英文描述： Stereo CODEC with MIC/HP/RCV/SPK-AMP
中文描述： 立體聲編解碼器麥克風/惠普/垃圾車/胰腎聯(lián)合移植腺苷
文件頁數： 51/104頁
文件大?。?/td> 926K
代理商： AK4643EN
ASAHI KASEI
[AK4643]
MS0476-E-01
2006/10
- 51 -
Digital Output Volume
The AK4643 has a digital output volume (256 levels, 0.5dB step, Mute). The volume can be set by the DVL7-0 and
DVR7-0 bits. The volume is included in front of a DAC block. The input data of DAC is changed from +12 to –115dB or
MUTE. When the DVOLC bit = “1”, the DVL7-0 bits control both Lch and Rch attenuation levels. When the DVOLC bit
= “0”, the DVL7-0 bits control Lch level and DVR7-0 bits control Rch level. This volume has a soft transition function.
The DVTM bit sets the transition time between set values of DVL/R7-0 bits as either 1061/fs or 256/fs (Table 40). When
DVTM bit = “0”, a soft transition between the set values occurs (1062 levels). It takes 1061/fs (=24ms@fs=44.1kHz)
from 00H (+12dB) to FFH (MUTE).
DVL/R7-0
00H
01H
02H
:
18H
:
FDH
FEH
FFH
Table 39. Digital Volume Code Table
Transition time between DVL/R7-0 bits = 00H and FFH
DVTM bit
Setting
0
1061/fs
1
256/fs
Table 40. Transition Time Setting of Digital Output Volume
Gain
+12.0dB
+11.5dB
+11.0dB
:
0dB
:
114.5dB
115.0dB
MUTE (
∞
)
Default
fs=8kHz
133ms
32ms
fs=44.1kHz
24ms
6ms
Default
相關PDF資料
PDF描述
AK4645EZ Stereo CODEC with MIC/HP-AMP
AK4645 Stereo CODEC with MIC/HP-AMP
AK4646EZ Stereo CODEC with MIC/SPK-AMP
AK4646 Stereo CODEC with MIC/SPK-AMP
AK4646EN Stereo CODEC with MIC/SPK-AMP
相關代理商/技術參數
參數描述
AK4644 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with built-in MIC/HP/RCV amplifier
AK4644EN 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP/RCV-AMP
AK4645 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP-AMP
AK4645EN 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP-AMP
AK4645ENP-L 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:
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