參數(shù)資料
型號(hào): AK4565
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: LOW POWER 20BIT CODEC WITH BUILT IN ALC
中文描述: 低功耗20位編解碼器中的ALC的建造
文件頁數(shù): 23/33頁
文件大小: 249K
代理商: AK4565
ASAHI KASEI
[AK4565]
MS0132-E-01
2003/05
- 23 -
Addr
02H
Register Name
Mode Control
R/W
Default
D7
0
D6
0
D5
D4
FS
D3
DIF1
D2
DIF0
D1
D0
DMUTE
DEM1
DEM0
R/W
0
0
0
1
0
0
0
1
DEM1-0: Select De-emphasis frequency
The AK4565 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 by DEM0
and DEM0 bits are enabled for input audio data.
DEM1
DEM0
0
0
0
1
1
0
1
1
Table 2. Select De-emphasis frequency
DIF1-0: Select Audio Serial Interface Format
No.
DIF1 bit
DIF0 bit
SDTO0/SDTO1(ADC)
0
0
0
20bit MSB justified
1
0
1
20bit MSB justified
2
1
0
20bit MSB justified
20bit MSB justified
1
1
16bit I
2
S compatible
16bit I
2
S compatible
3
1
1
20bit I
2
S compatible
20bit I
2
S compatible
Table 3. Select Audio Serial Interface Format
FS: Select Sampling Frequency
0:fs=32kHz
1:fs=48kHz (Default)
FS bit can set limiter period (LTM1-0 bit), recovery period (WTM1-0 bit), zero crossing timeout
(ZTM1-0 bit) and FADEIN/FADEOUT period (FDTM1-0 bit) the same period at fs=32kHz and
48kHz.
DMUTE: Control of SDTO1 output data
0: SDTO1 output data is enabled.
1: SDTO1 output data is muted. (Default)
Mode
44.1kHz
OFF
48kHz
32kHz
Default
SDTI (DAC)
16bit LSB justified
20bit LSB justified
BCLK
32fs
40fs
40fs
= 32fs
40fs
Figure
Figure 9
Figure 10
Figure 11
Figure 12
Figure 12
Default
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