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參數(shù)資料
| 型號(hào)： | AK4648 |
| 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(fēng)/惠普/胰腎聯(lián)合移植腺苷 |
| 文件頁(yè)數(shù)： | 103/119頁(yè) |
| 文件大?。?/td> | 1272K |
| 代理商： | AK4648 |
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[AK4648]
MS0625-E-01
2007/06
- 103 -
CONTROL SEQUENCE
■
Clock Set up
When ADC or DAC is powered-up, the clocks must be supplied.
1.
PLL Master Mode.
BICK pin
LRCK pin
MCKO bit
(Addr:01H, D1)
PMPLL bit
(Addr:01H, D0)
40msec(max)
Output
(1)
(6)
Power Supply
PDN pin
PMVCM bit
(Addr:00H, D6)
(2)
(3)
MCKI pin
(5)
(4)
Input
M/S bit
(Addr:01H, D3)
MCKO pin
Output
(8)
(7)
40msec(max)
Example:
Audio I/F Format: MSB justified (ADC & DAC)
BICK frequency at Master Mode: 64fs
Input Master Clock Select at PLL Mode: 11.2896MHz
MCKO: Enable
Sampling Frequency: 44.1kHz
(1) Power Supply & PDN pin = “L”
“H”
(3)Addr:00H, Data:40H
(2)Addr:01H, Data:08H
Addr:04H, Data:4AH
Addr:05H, Data:27H
(4)Addr:01H, Data:0BH
MCKO, BICK and LRCK output
Figure 71. Clock Set Up Sequence (1)
<Example>
(1)
After Power Up, PDN pin = “L”
“H”. “L” time of 150ns or more is needed to reset the AK4648.
The AK4648 should be operated as the recommended power-up/down sequence shown in “System Design
(Grounding and Power Supply Decoupling)” to avoid the pop noise at the speaker output, lineout output, and
headphone output.
(2)
DIF1-0, PLL3-0, FS3-0, BCKO and M/S bits should be set during this period.
(3)
Power UpVCOM: PMVCM bit = “0”
“1”
VCOM should first be powered-up before the other block operates.
(4)
In case of using MCKO output: MCKO bit = “1”
In case of not using MCKO output: MCKO bit = “0”
(5)
PLL lock time is 40ms(max.) after PMPLL bit changes from “0” to “1” and MCKI is supplied from an external
source.
(6)
The AK4648 starts to output the LRCK and BICK clocks after the PLL becomes stable. Then normal operation
starts.
(7)
The invalid frequency is output from MCKO pin during this period if MCKO bit = “1”.
(8)
The normal clock is output from MCKO pin after the PLL is locked if MCKO bit = “1”.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK4648EC | Stereo CODEC with MIC/HP/SPK-AMP |
| AK4650 | 16Bit ツヒ CODEC with MIC/HP/SPK-AMP & TSC |
| AK4650VG | 16Bit ツヒ CODEC with MIC/HP/SPK-AMP & TSC |
| AK4651 | 16Bit ツヒ CODEC with MIC/HP/SPK-AMP |
| AK4651VG | 16Bit ツヒ CODEC with MIC/HP/SPK-AMP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4648EC | 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP/SPK-AMP |
| 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(dòng)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(yīng)商器件封裝:32-QFN（5x5） 標(biāo)準(zhǔn)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 |
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