參數(shù)資料
型號： AK4633
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類： Codec
英文描述： 16-Bit Mono CODEC with ALC & MIC/SPK-AMP
中文描述： 16位單聲道編解碼器ALC的
文件頁數(shù)： 50/82頁
文件大?。?/td> 688K
代理商： AK4633
ASAHI KASEI
[AK4633]
MS0447-E-03
2006/04
- 50 -
SOFTMUTE
Soft mute operation is performed in the digital input domain. When the SMUTE bit goes to
“
1
”
, the input signal is
attenuated by
∞
(
“
0
”
) during the cycle of 245/fs (31msec@fs=8kHz). When the SMUTE bit is returned to
“
0
”
, the mute
is cancelled and the input attenuation gradually changes to 0dB during the cycle of 245/fs (31msec@fs=8kHz). If the soft
mute is cancelled within the cycle of 245/fs (31msec@fs=8kHz), the attenuation is discontinued and returned to 0dB. The
soft mute for Playback operation is effective for changing the signal source without stopping the signal transmission.
SMUTE bit
Attenuation
245/fs
(1)
0dB
-
∞
245/fs
GD
(2)
GD
(3)
Analog Output
Figure 37. Soft Mute Function
(1) The input signal is attenuated by
∞
(
“
0
”
) during the cycle of 245/fs (31msec@fs=8kHz).
(2) Analog output corresponding to digital input has the group delay (GD).
(3) If the soft mute is cancelled within the cycle of 245/fs (31msec@fs=8kHz), the attenuation is discounted and returned
to 0dB within the same cycle.
BEEP Input
When the PMBP bit is set to
“
1
”
, the beep input is powered-up. When the BEEPS bit is set to
“
1
”
, the input signal from the
BEEP pin is output to Speaker-Amp. When the BEEPA bit is set to
“
1
”
, the input signal from the BEEP pin is output to the
mono line output amplifier. The external resister Ri adjusts the signal level of BEEP input.
Table 34
shows the typical
gain example at R
i
= 20k
.
This gain is in inverse proportion to R
i
It should be set MDIF bit to
“
1
”
expect PMBP bit =
BEEPA bit = BEEPS bit =
“
0
”
.
BEEP
-
+
Rf
Ri
Figure 38. Block Diagram of BEEP pin
SPKG1-0 bits
00
01
10
11
BEEP
SPP/SPN Gain
+8dB
+10dB
+12dB
+14dB
Table 34. BEEP Input Gain at R
i
= 20k
BEEP
AOUT Gain
0dB
0dB
0dB
0dB
相關(guān)PDF資料
PDF描述
AK4640 16BIT CODEC WITH MIC /HP/SPK-AMPl
AK4640VG 16BIT CODEC WITH MIC /HP/SPK-AMPl
AK4640VN 16BIT CODEC WITH MIC /HP/SPK-AMPl
AK4642EN Stereo CODEC with MIC/HP/SPK-AMP
AK4643EN Stereo CODEC with MIC/HP/RCV/SPK-AMP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
AK4635 制造商:AKM 制造商全稱:AKM 功能描述:16-Bit Mono CODEC with ALC & MIC/SPK/Video-AMP
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