參數(shù)資料
型號: AK4561VQ
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: 16bit CODEC with built-in ALC and MIC/HP-Amp
中文描述: 16位編解碼器在ALC和內(nèi)置麥克風(fēng)/惠普放大器
文件頁數(shù): 21/48頁
文件大?。?/td> 332K
代理商: AK4561VQ
ASAHI KASEI
AKM CONFIDENTIAL
[AK4561]
Rev. 0.9
2000/09
- 21 -
Mode
Control
Addr
03H
Register Name
Mode Control
RESET
DEM1-0: Select De-emphasis Frequency
The AK4561 includes the digital de-emphasis filter (tc = 50/15
μ
s) by IIR filter. The filter
corresponds to three sampling frequencies (32kHz, 44.1kHz and 48kHz). The de-emphasis filter
selected DEM0 and DEM1 registers are enabled for input audio data.
D7
FS
1
D6
D5
D4
D3
D2
D1
D0
VOL2
0
VOL1
1
VOL0
0
MONO1 MONO0
0
DEM1
0
DEM0
1
0
DEM1
0
0
1
1
Table 3. De-emphasis Frequencies
DEM0
0
1
0
1
Mode
44.1kHz
OFF
48kHz
32kHz
RESET
MONO1-0: Select digital data of DAC
MONO1
0
0
1
1
Table 4. Select digital data of DAC
MONO0
0
1
0
1
LOUT
Lch
Lch
Rch
Rch
ROUT
Rch
Lch
Rch
Lch
RESET
VOL2-0: LINEOUT Gain Setting
As signal level of LINEOUT is different by VA power supply voltage, a gain of LINEOUT is set
by VOL2-0 bits.
VOL2
0
0
0
0
1
1
1
1
VOL1
0
0
1
1
0
0
1
1
Table 5. LINEOUT volume setting
VOL0
0
1
0
1
0
1
0
1
Gain
+8.1dB
+7.8dB
+7.5dB
+7.2dB
+6.9dB
+6.6dB
+6.3dB
+6.0dB
VA Voltage
2.60
2.65V
2.65
2.75V
2.75
2.85V
2.85
2.95V
2.95
3.05V
3.05
3.15V
3.15
3.25V
3.25
3.30V
RESET
FS: Select Sampling Frequency
0:fs=32kHz
1:fs=48kHz (RESET)
Recovery period (WTM1-0 bit), zero crossing timeout (ZTM1-0 bit) and FADEIN/FADEOUT period
(FDTM1-0 bit), which can set the same period at fs=32kHz and 48kHz.
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