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(yè)數(shù)： 63/76頁(yè)
文件大小： 634K
代理商： AK4640
ASAHI KASEI
[AK4640]
MS0273-E-00
2004/03
- 63 -
CONTOROL SEQUENCE
Power up
Upon power-up, bring the PDN pin = “L”. Initialize the internal registers to default values after the PDN pin = “H”. When
the power supplies are partially powered OFF, the AK4640 must be reset by bringing PDN pin “L” after these power
supplies are powered ON again. Set the following registers to establish the initial condition.
Power Supply
PDN pin
PMVCM bit
(Addr:00H, D7)
DIF1-0 bits
(Addr:04H, D1-0)
BF bit
(Addr:04H, D2)
PLL1-0 bits
(Addr:04H, D7-6)
MOUT2 bit
(Addr:02H, D0)
ALCS bit
(Addr:02H, D1)
HPL/R bits
(Addr:03H, D1-0)
DAHS bit
(Addr:03H, D7)
(2)
10
XX
X
XX
00
0
(3)
(4)
(5)
(6)
E xam ple :
A udio I/F Fo rm at : I
2
S
B IC K frequency at M aster M o de : 64fs
Input M aster C lo ck S elect at P LL M o de : 11.2896M H z
(1) P ower S upply
(2) P DN pin = “L”
→
“H”
(3) A ddr:00H , Data 80H
(4) A ddr:02H , D ata 03H
(5) A ddr:03H , D ata 80H
(6) A ddr:04H , D ata 42H
Figure 44. Power Up Sequence
<Example>
(1) Power Supply
(2) PDN pin = “L”
→
“H”
“L” time of 150ns or more is needed to reset the AK4640.
(3) Power up VCOM : PMVCM bit = “0”
→
“1”
VCOM should first be powered up before the other block operates.
(4) Set up register 02H : MOUT2 bit = ALCS bit = “0”
→
“1”
Set the MOUT2 and ALCS bits to “1” when using the Speaker-amp.
(5) Set up register 03H : HPL bit = HPR bit = “1”
→
“0”, DAHS bit = “0”
→
“1”
(6) Set up register 04H
DIF1-0 bits set the audio interface format.
BF bit sets BICK output frequency in master mode.
PLL1-0 bits set MCKI input frequency in PLL mode.
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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