參數(shù)資料
型號(hào): AK4631
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類(lèi): 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): 61/69頁(yè)
文件大?。?/td> 568K
代理商: AK4631
ASAHI KASEI
[AK4631]
MS0317-J-01
2004/11
- 61 -
FS3-0 bits
(Addr:05H,
D5,D2-0)
MIC Control
(Addr:02H, D2-0)
PMADC bit
(Addr:00H, D0)
PMMIC bit
(Addr:00H, D1)
ADC Internal
State
XXX
XXXX
001
X1X
Power Down
Initialize Normal State Power Down
1059 / fs
(1)
(2)
(6)
(7)
ALC1 State
ALC1 Enable
ALC1 Disable
ALC1 Disable
(5)
ALC1 Control 1
(Addr:06H)
XXH
00H
(3)
ALC1 Control 2
(Addr:08H)
XXH
47H
(4)
ALC1 Control 3
(Addr:07H)
XXH
61H or 21H
Example:
PLL Master Mode
Audio I/F Format:DSP Mode, BCKP=MSBS=“0”
Sampling Frequency:8kHz
Pre MIC AMP:+20dB
MIC Power On
ALC1 setting:Refer to Figrure 29
ALC2 bit=“1”(default)
(2) Addr:02H, Data:07H
(3) Addr:06H, Data:00H
(1) Addr:05H, Data:00H
(4) Addr:08H, Data:47H
(5) Addr:07H, Data:61H
(6) Addr:00H, Data:43H
Recording
(7) Addr:00H, Data:40H
Figure 47. MIC Input Recording Sequence
<
>
fs=8kHz
sequence at ALC1 operation”
ALC1
ALC1
“Figure 30. Registers set-up
(1)
(FS3-0 bit)
(6)
02H)
06H
08H
PLL
PLL
ADC
(2)
(3) ALC1 Timer
(4) ALC1 REF
(5) LMTH, RATT, LMAT1-0, ALC1 bit
(6)
ADC
ADC
ALC1 bit
“1”
(
07H
: PMMIC bit = PMADC bit = “0”
“1”
1059/fs=133ms@fs=8kHz
ALC1
IPGA
(0dB)
(7)
ADC
: PMMIC bit = PMADC bit = “1”
“0”
ALC1 bit
“1”
ALC1
ALC1 Disable
(ALC1 bit = “0”)
PMMIC bit = “0”
ALC1
PMMIC bit = “0”
IPGA
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