參數(shù)資料
型號(hào)： AK4650VG
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類： Codec
英文描述： 16Bit ツヒ CODEC with MIC/HP/SPK-AMP & TSC
中文描述： 16位ツヒ編解碼器麥克風(fēng)/惠普/胰腎聯(lián)合移植腺苷
文件頁數(shù)： 41/86頁
文件大小： 824K
代理商： AK4650VG
[AK4650]
MS0502-E-01
2007/04
- 41 -
■
Headphone Jack Detection
HPL pin
6.8
2.2k
47u
HPR pin
6.8
2.2k
47u
AK4650
HVDD
100k
Headphone Out
1
2
3
4
5
HDT pin
Headphone Jack
Not inserted
Inserted
Pins 1 and 2
Short
Open
HDT pin
“L” (pulled-down by external 2.2k)
“H” (pulled-up by internal 100k)
HPDT bit
DTHPJ bit
Figure 28. Headphone Jack Detection
Headphone jack detection sequence example:
(1)
HPDT bit = “1”.
(2)
HDT pin is pulled-up to HVDD by 100k
Ω
.
(3)
DTHPJ bit indicates whether headphone jack is inserted or not.
Headphone jack detection result is reported to DTHPJ bit (Table 34). If HPINT bit is “1”, INTN pin becomes “L” when
headphone jack is detected.
Input Level of HDT
DTHPJ bit
< 0.3 x HVDD
0
> 0.7 x HVDD
1
Table 34. Headphone Jack Detection Result
When ATSW bit is “1” at PMHPL=PMHPR=PMSPK= “1” and HPMT=SPPS= “0”, Headphone-amp and Speaker-amp
are automatically powered-up/down according to headphone jack detection result (Table 35, Table 36).
PMHPL
PMHPR
0
x
0
1
1
Table 35. Headphone-amp automatic power-down (ATSW bit = “1”)
DTHPJ
PMSPK
0
0
1
Headphone Jack
Not inserted
Inserted
DTHPJ
HPMT
HP-Amp
x
1
0
Power Down
Power Down
Power UP
SPPS
X
1
0
X
X
SPK-Amp
Power Down
Power Save
Power UP
Power Down
Power Save
0
1
1
Table 36. Speaker-amp automatic power-save (ATSW bit = “1”)
相關(guān)PDF資料
PDF描述
AK4651 16Bit ツヒ CODEC with MIC/HP/SPK-AMP
AK4651VG 16Bit ツヒ CODEC with MIC/HP/SPK-AMP
AK4665A 20-Bit Stereo CODEC with MIC/HP-AMP
AK4665AEN 20-Bit Stereo CODEC with MIC/HP-AMP
AK4671 Stereo CODEC with MIC/RCV/HP-AMP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK4651 制造商:AKM 制造商全稱:AKM 功能描述:16Bit ツヒ CODEC with MIC/HP/SPK-AMP
AK4651VG 制造商:AKM 制造商全稱:AKM 功能描述:16Bit ツヒ CODEC with MIC/HP/SPK-AMP
AK4664VQ 功能描述:IC CODEC STEREO 20BIT LQFP 制造商:akm semiconductor inc. 系列:* 零件狀態(tài):上次購買時(shí)間 標(biāo)準(zhǔn)包裝:1,000
AK4665A 制造商:AKM 制造商全稱:AKM 功能描述:20-Bit Stereo CODEC with MIC/HP-AMP
AK4665AEN 制造商:AKM 制造商全稱:AKM 功能描述:20-Bit Stereo CODEC with MIC/HP-AMP
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