參數(shù)資料
型號: AK4126VQ
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: 6ch 192kHz / 24-Bit Asynchronous SRC
中文描述: 6通道192kHz的/ 24位異步鋼骨混凝土
文件頁數(shù): 18/27頁
文件大?。?/td> 241K
代理商: AK4126VQ
ASAHI KASEI
[AK4126]
MS0544-E-00
2006/09
- 18 -
2. Semi-Auto mode
The soft mute is cancelled automatically by the setting of PLL2-0 pins (refer to Table 2), after the AK4126 detects the
rising edge (PDN pin = “L”
“H”) and the mute is continued during 4410/fso=100ms@fso=44.1kHz. After PDN pin =
“L”
“H” and when SMUTE pin is “H”, the mute is not cancelled.
PDN pin
“L”
Attenuation
0dB
-
SDTO
4410/fso
(1)
SMUTE pin
Don’t care
“L”
Note: SDTO shows SDTO1, SDTO2 and SDTO3.
(1) The output data is attenuated by
during the soft mute cycle (See Table 6)
Figure 11. Soft Mute Function (Semi-Auto Mode)
Dither
The AK4126 includes the dither circuit. The dither circuit adds the dither to the LSB of all the output data set with the
OBIT1-0 pins by DITHER pin = “H”.
De-emphasis Filter
The AK4126 includes a digital de-emphasis filter (tc = 50/15
μ
s) via an IIR filter. This filter corresponds to three
frequencies (32kHz, 44.1kHz and 48kHz). This setting is done via DEM1-0 pins (See Table 7), and it is applied to all input
data.
DEM1pin
DEM0 pin
L
L
L
H
H
L
H
H
Table 7. De-emphasis Filter Setting
Mode
44.1kHz
OFF
48kHz
32kHz
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