參數(shù)資料
型號: AK4651
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: 16Bit ツヒ CODEC with MIC/HP/SPK-AMP
中文描述: 16位ツヒ編解碼器麥克風(fēng)/惠普/胰腎聯(lián)合移植腺苷
文件頁數(shù): 30/66頁
文件大?。?/td> 605K
代理商: AK4651
ASAHI KASEI
[AK4651]
MS0503-E-00
2006/04
- 30 -
De-emphasis Filter
The AK4651 includes the digital de-emphasis filter (tc = 50/15
μ
s) by IIR filter. Setting the DEM1-0 bits enables the
de-emphasis filter (Table 23).
DEM1
DEM0
0
0
0
1
1
0
1
1
Table 23. De-emphasis Control
Bass Boost Function
The BST1-0 bits control the amount of low frequency boost applied to the DAC output signal (Table 24). If the BST1-0
bits are set to “10” (MID Level), AC-coupling capacitor can be sized down to 47
μ
F. If the boosted signal exceeds the full
scale, the analog output clips to the full scale.
Mode
44.1kHz
OFF
48kHz
32kHz
Default
Boost Filter (fs=48kHz)
-5
0
5
10
15
20
10
100
1000
10000
Frequency [Hz]
G
MAX
MID
MIN
Figure 19. Bass Boost Frequency (fs=48kHz)
BST1
0
0
1
1
BST0
0
1
0
1
Mode
OFF
MIN
MID
MAX
Default
Table 24. Bass Boost Control
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