參數(shù)資料
型號: AK4588VQ
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: 2/8 CHANNEL AUDIO CODEC WITH DIR
中文描述: 2 / 8聲道音頻編解碼器迪爾
文件頁數(shù): 26/76頁
文件大?。?/td> 787K
代理商: AK4588VQ
ASAHI KASEI
[AK4588]
MS0287-E-01
2004/03
- 26 -
LRCK1
Fs
176.4kHz
192.0kHz
MCLK (MHz)
192fs
-
-
BICK1 (MHz)
64fs
11.2896
12.2880
128fs
22.5792
24.5760
256fs
-
-
Table 5. System Clock Example (Quad Speed Mode @Manual Setting Mode)
(Note: At Quad speed mode (DFS1= “1”, DFS0 = “0”) are not available for ADC.)
MCLK
Sampling Speed
512fs
256fs
128fs
Table 6. Sampling Speed (Auto Setting Mode)
LRCK1
MCLK (MHz)
fs
128fs
256fs
32.0kHz
-
-
44.1kHz
-
-
48.0kHz
-
-
88.2kHz
-
22.5792
96.0kHz
-
24.5760
176.4kHz
22.5792
-
192.0kHz
24.5760
-
Table 7. System Clock Example (Auto Setting Mode)
Normal
Double
Quad
512fs
16.3840
22.5792
24.5760
-
-
-
-
Sampling
Speed
Normal
Double
Quad
De-emphasis Filter
The AK4588 includes the digital de-emphasis filter (tc=50/15
μ
s) by IIR filter. De-emphasis filter is not available in
Double Speed Mode and Quad Speed Mode. This filter corresponds to three sampling frequencies (32kHz, 44.1kHz,
48kHz). De-emphasis of each DAC can be set individually by register data of DEMA1-C0 bits (DAC1: DEMA1-0 bits,
DAC2: DEMB1-0 bits, DAC3: DEMC1-0 bits, DAC4: DEMD1-0 bits, see “Register Definitions”).
Mode
0
1
2
3
Sampling Speed
Normal Speed
Normal Speed
Normal Speed
Normal Speed
DEM1
0
0
1
1
DEM0
0
1
0
1
DEM
44.1kHz
OFF
48kHz
32kHz
Default
Table 8. De-emphasis control
Digital High Pass Filter
The ADC has a digital high pass filter for DC offset cancel. The cut-off frequency of the HPF is 1.0Hz at fs=48kHz and
scales with sampling rate (fs).
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