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參數(shù)資料
| 型號： | AK4648EC |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | Stereo CODEC with MIC/HP/SPK-AMP |
| 中文描述： | 立體聲編解碼器麥克風/惠普/胰腎聯(lián)合移植腺苷 |
| 文件頁數(shù)： | 112/119頁 |
| 文件大?。?/td> | 1272K |
| 代理商： | AK4648EC |
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[AK4648]
MS0625-E-01
2007/06
- 112 -
■
Headphone-amp Output
FS3-0 bits
(Addr:05H, D5&D2-0)
DVL/R7-0 bits
(Addr:0AH&0DH, D7-0)
PMHPL/R/C bits
(Addr:01H, D5-4&D2)
HPMTN bit
(Addr:01H, D6)
HPL/R pins,
HVCM pin
1,111
0,000
18H
28H
Normal Output
(1)
FBEQ bit
(Addr: 0EH, D2)
0
1
0
(3)
(5)
(12)
PMDAC bit
(Addr:00H, D2)
(6)
(11)
(7)
(9)
(8)
(10)
IVL/R7-0 bits
(Addr:09H&0CH, D7-0)
E1H
91H
(4)
PMMIN bit
(Addr:00H, D5)
DACH bit
(Addr:0FH, D0)
(13)
HPG3-0 bits
(Addr:0FH, D7-4)
1011
1010
(2)
E xam ple :
P LL M aster M o d e
D V O LC b it = “1”(de fau lt)
D ig ita l V olum e Level:
8d B , H P V olum e L evel: -3d B
E Q : E n ab le
D e-e m p ha se s re sp onse: O F F
S oft M ute T im e : 25 6/fs, P seu do C ap -less M o de
(1) A dd r:05H , D ata:2 7H
(5) A dd r:0A H & 0D H , D a ta 2 8H
(6) A dd r:00H , D ata 6 4H
P layback
(3) A dd r:0E H , D ata 1 5H
(9) A dd r:01H , D ata 3 9H
(10) A d dr:01H , D a ta 09H
(7) A dd r:01H , D ata 3 D H
(8) A dd r:01H , D ata 7 9H
(11) A d dr:00H , D a ta 40H
(12) A d dr:0 E H , D a ta 11H
(4) A dd r:09H & 0C H , D a ta 91 H
(2) A dd r:0F H , D a ta A 9 H
(13) A d dr:0F H , D a ta A 8H
Figure 79. Headphone-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 AK4648 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
HP-Amp”: DACH bit = “0”
→
“1”
Set up analog volume for HP-Amp (Addr: 0F, HPG3-0 bits)
(3)
Enable 5-band Equalizer. (Boost amount is selected by Addr=25H-27H.): FBEQ bit = “0”
“1”
(4)
Set up input volume (Addr: 09H and 0CH)
When PMADL = PMADR bits = “0”, IVL7-0 and IVR7-0 bits should be set to “91H”(0dB).
(5)
Set up the output digital volume (Addr: 0AH and 0DH)
When DVOLC bit is “1” (default), DVL7-0 bits set the volume of both channels. After DAC is powered-up,
the digital volume changes from default value (0dB) to the register setting value by the soft transition.
(6)
Power up DAC and MIN-Amp: PMDAC = PMMIN bits = “0”
→
“1”
The DAC enters an initialization cycle that starts when the PMDAC bit is changed from “0” to “1” at PMADL
and PMADR bits are “0”. The initialization cycle time is 1059/fs=24ms@fs=44.1kHz. During the
initialization cycle, the DAC input digital data of both channels are internally forced to a 2's complement, “0”.
The DAC output reflects the digital input data after the initialization cycle is complete. When PMADL or
PMADR bit is “1”, the DAC does not require an initialization cycle. When ALC bit is “1”, ALC is disable
(ALC gain is set by IVL/R7-0 bits) during an initialization cycle (1059/fs=24ms@fs=44.1kHz). After the
initialization cycle, ALC operation starts from the gain set by IVL/R7-0 bits.
(7)
Power up headphone-amp:
a.
Pseudo Cap-less Mode: PMHPL = PMHPR = PMHPC bits = “0”
→
“1”
b.
Single-ended Mode: PMHPL=PMHPR bits = “0”
“1”
Output voltages of headphone-amp are still VSS2.
(8)
Rise up the common voltage of headphone-amp: HPMTN bit = “0”
→
“1”
The rise time depends on HVDD and the capacitor value connected with the MUTET pin. When HVDD=3.3V
and the capacitor value is 1.0
μ
F
±
30%, the time constant (0.8 x HVDD/2) is
τ
r
= 120ms(typ.), 210ms(max.).
In Single-ended Mode, HVCM pin still outputs VSS2.
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| AK4650 | 16Bit ツヒ CODEC with MIC/HP/SPK-AMP & TSC |
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| AK4651 | 16Bit ツヒ CODEC with MIC/HP/SPK-AMP |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4649 | 制造商:AKM 制造商全稱:AKM 功能描述:24bit Stereo CODEC with MIC/SPK-AMP |
| AK4649ECB | 制造商:AKM 制造商全稱:AKM 功能描述:24bit Stereo CODEC with MIC/SPK-AMP |
| AK4649VN | 功能描述:IC CODEC AUDIO 32QFN 制造商:akm semiconductor inc. 系列:- 包裝:帶卷（TR） 零件狀態(tài):初步 類型:音頻 數(shù)據(jù)接口:I2C 分辨率（位）:24 b ADC/DAC 數(shù):1 / 1 三角積分:- 信噪比，ADC/DAC（db）（典型值）:- 動態(tài)范圍，ADC/DAC（db）（典型值）:- 電壓 - 電源，模擬:3 V ~ 3.6 V 電壓 - 電源，數(shù)字:3 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:32-WFQFN 裸露焊盤 供應商器件封裝:32-QFN（5x5） 標準包裝:1,000 |
| AK4650 | 制造商:AKM 制造商全稱:AKM 功能描述:16Bit ツヒ CODEC with MIC/HP/SPK-AMP & TSC |
| AK4650VG | 制造商:AKM 制造商全稱:AKM 功能描述:16Bit ツヒ CODEC with MIC/HP/SPK-AMP & TSC |
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