參數(shù)資料
型號(hào)： AK4640
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類： Codec
英文描述： 16BIT CODEC WITH MIC /HP/SPK-AMPl
中文描述： 16位編解碼器麥克風(fēng)/惠普/胰腎聯(lián)合移植，AMPl
文件頁數(shù)： 35/76頁
文件大?。?/td> 634K
代理商： AK4640
ASAHI KASEI
[AK4640]
MS0273-E-00
2004/03
- 35 -
BEEP Input
When the PMBPS bit is set to “1”, the stereo beep input is powered up. And when the BPSHP bit is set to “1”, the input
signals from the BEEPL and BEEPR pins are mixed to Headphone-amp. When the BPSSP bit is set to “1”, the input
signals from the BEEPL and BEEPR pins are mixed to Speaker-amp. When the PMBPM bit is set to “1”, mono beep input
is powered up. And when the BPMHP bit is set to “1”, the input signal from the BEEPM pin is mixed to Headphone-amp.
When the BPMSP bit is set to “1”, the input signal from the BEEPM pin is mixed to Speaker-amp. The external resisters
Ri adjust the signal level of each BEEP input that is mixed to Headphone and Speaker outputs. When BPMSP bit is “1”,
the offset voltage between SPP and SPN pins may be large. Therefore, it is recommended that BPMSP bit be set to “0”
while the beep signal is not output.
Path
BEEPL
HPL; BEEPR
HPR
BEEPL
SPP/N; BEEPR
SPP/N
BEEPM
HPL; BEEPM
HPR
BEEPM
SPP/N
Table 20. BEEP input gain
Gain
Example (Ri=20k)
1.6dB
±
6dB
+2.5dB
±
6dB
21.6dB
±
6dB
+7.0dB
±
6dB
(16.7k / Ri)
±
50%
(26.7k / Ri)
±
50%
(1.67k / Ri)
±
50%
(44.7k / Ri)
±
50%
BEEPL
Ri
20k(typ)
BEEPR
Ri
20k(typ)
AK4640
BEEPM
Ri
2k(typ)
BPMHP
SPK
MIX
HPL
MIX
HPR
MIX
BPSHP
BPSHP
-1.6dB
BPMSP
BPSSP
-1.6dB
-1.6dB
+2.5dB
+2.5dB
+27.0dB
Figure 24. Block Diagram of BEEP pins
相關(guān)PDF資料
PDF描述
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
AK4645EZ Stereo CODEC with MIC/HP-AMP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK4640_05 制造商:AKM 制造商全稱:AKM 功能描述:16-Bit ツヒ CODEC with MIC/HP/SPK-AMP
AK4640VG 制造商:AKM 制造商全稱:AKM 功能描述:16BIT CODEC WITH MIC /HP/SPK-AMPl
AK4640VN 制造商:AKM 制造商全稱:AKM 功能描述:16BIT CODEC WITH MIC /HP/SPK-AMPl
AK4641 制造商:AKM 制造商全稱:AKM 功能描述:16 BIT CODEC WITH BLUETOOTH INTERFACE
AK4641EN 制造商:AKM 制造商全稱:AKM 功能描述:16bit stereo CODEC with built-in Microphone-amplifier and 16bit Mono CODEC for Bluetooth Interface.
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