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AK4424 Datasheet(PDF) 10 Page - Asahi Kasei Microsystems

Part No. AK4424
Description  192kHz 24-Bit Stereo ?誇 DAC with 2Vrms Output
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Manufacturer  AKM [Asahi Kasei Microsystems]
Direct Link  http://www.akm.com
Logo AKM - Asahi Kasei Microsystems

AK4424 Datasheet(HTML) 10 Page - Asahi Kasei Microsystems

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[AK4424]
MS0935-E-03
2010/09
- 10 -
LRCK
BICK
(64fs)
SDTI
0
3
1
2
24
31
0
1
31
0
1
23:MSB, 0:LSB
22
1
0
Don’t care
23
Lch Data
Rch Data
23
25
3
224
23
25
22
1
0
Don’t care
23
23
Figure 3. Audio Interface Timing
De-emphasis Filter
The AK4424 integrates digital de-emphasis filter (tc = 50/15µs). The DEM pin which enables the digital de-emphasis
filter by setting “H” is internal pull-down pin. Refer to the section of “FILTER CHARACTERISTICS” regarding the gain
error when the de-emphasis filter is enabled. In case of double speed mode (MCLK=256fs/384fs) and quad speed mode
(MCLK=128fs/192fs), the digital de-emphasis filter is always off.
DEM pin
De-emphasis Filter
1
ON
0
OFF
(default)
Table 4. De-emphasis Filter Control (Normal Speed Mode)
Zero detect function
When the input data for both channels are continuously zeros for 8192 LRCK cycles, the DZF pin is set to “H”. If the
input data of Lch and Rch are continuously not zeros orderly, or if each Rch or Lch is continuously not zeros, the DZF pin
immediately returns to “L”.


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