參數(shù)資料
型號(hào): AK4631
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: 16-Bit Mono CODEC with ALC & MIC/SPK-AMP
中文描述: 16位單聲道編解碼器ALC的
文件頁(yè)數(shù): 62/69頁(yè)
文件大?。?/td> 568K
代理商: AK4631
ASAHI KASEI
[AK4631]
MS0317-J-01
2004/11
- 62 -
FS3-0 bits
(Addr:05H,
D5,D2-0)
DVOL7-0 bits
(Addr:0AH, D7-0)
PMDAC bit
(Addr:00H, D2)
PMSPK bit
(Addr:00H, D4)
XXXX
XXXX
0001100
XXXXXXX
SPP pin
Normal Output
SPPS bit
(Addr:02H, D7)
Hi-Z
Hi-Z
SPN pin
Normal Output
Hi-Z
Hi-Z
SVDD/2
SVDD/2
(1)
(4)
X
0
(3)
ALC2 bit
(Addr:07H, D6)
(5)
(6)
(9)
(7)
(2)
DACM bit
(Addr:02H, D3)
ALC2S bit
(Addr:02H, D5)
(8)
Example:
PLL, Master Mode
Audio I/F Format :DSP Mode, BCKP=MSBS= “0”
Sampling Frequency: 8kHz
Digital Volume: -8dB
ALC2 : Enable
(2) Addr:02H, Data:28H
(3) Addr:07H, Data:40H
(1) Addr:05H, Data:00H
(4) Addr:0AH, Data:28H
(5) Addr:00H, Data:54H
(6) Addr:02H, Data:A8H
(7) Addr:02H, Data:28H
Playback
(8) Addr:00H, Data:40H
Figure 48. Speaker-Amp Output Sequence
<
>
(1)
(FS3-0 bit)
(5)
PLL
PLL
DAC
(2) DAC
SPK-Amp
DACM = ALC2S bit: “0”
“1”
(3) ALC2
(4)
DAC
(5) DAC
ALC2 bit = “1”
ALC2
(ALC2bit)
(
0AH)
Default
: PMDAC bit = PMSPK bit = “0”
“1”
(512/fs =64ms (@fs=8kHz, ROTM bit = “0”)
“–2dB
(0dB)
ALC2
“–2dB”
ALC2
(6)
: SPPS bit = “0”
“1”
MIN pin – MOUT pin
(6)
MIN pin
MIN-Amp (ALC2)
SPK-Amp
Enable
e.g. Input Impedance of MIN pin =36k
(max), C=0.1
μ
F
:
5
τ
= 18ms
(7)
(8) DAC
SPK-Amp
DACM = ALC2S bit: “1”
“0”
(9) DAC
: SPPS bit = “1”
“0”
Disable
: PMDAC bit = PMSPK bit = “1”
“0”
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