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參數(shù)資料
| 型號： | AK4317-VF |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | 18BIT SCF DAC WITH ATT & MIXER |
| 中文描述： | 18位超臨界DAC，具有先進(jìn)交通運輸 |
| 文件頁數(shù)： | 9/19頁 |
| 文件大?。?/td> | 171K |
| 代理商： | AK4317-VF |
ASAHI KASEI
[AK4317]
0172-E-01
1997/5
- 9 -
OPERATION OVERVIEW
System Clock
The external clocks which are required to operate the AK4317 are MCLK, LRCK, BICK. The master
clock(MCLK)should be synchronized with LRCK but the phase is not critical. The MCLK is used to
operate the digital interpolation filter and the delta-sigma modulator. The frequency of MCLK is
determined by the sampling rate (LRCK) and CKS pin. Table 1 illustrates corresponding clock
frequencies. When the 384fs is selected, the internal master clock becomes 256fs(=384fs*2/3). Refer to
Figure 1 .
All external clocks(MCLK,BICK,LRCK) should always be present whenever the AK4317 is in normal
operation mode(PD="H"). If these clocks are not provided, the AK4317 may draw excess current because
the device utilizes dynamic refreshed logic internally. If the external clocks are not present, the AK4317
should be in the power-down mode(PD="L"). After exiting reset at power-up etc., the AK4317 is in power-
down mode until MCLK and LRCK are input.
Clock
frequency
LRCK (fs)
8
k
～
50kHz
～
64fs
256fs
384fs
BICK
CKS="L"
CKS="H"
Table 1 . System Clocks
MCLK
Figure 1 . MCLK divider
Audio Serial Interface Format
Data is shifted in via the SDATA pin using BICK and LRCK inputs. Four serial data modes which are
compatible with AK4319 are supported and selected by the DIF0 and DIF1 pins as shown in Table 2 . In
all modes the serial data is MSB-first, 2's compliment format and is latched on the rising edge of BICK.
Mode 2 can be used for 16 MSB justified formats by zeroing the unused LSBs.
DIF1 DIF0
Mode
BICK
Figure
0
0
0: 16bit LSB Justified
≥
32fs
≥
36fs
≥
36fs
≥
36fs
or 32fs
Figure 2
0
1
1: 18bit LSB Justified
Figure 2
1
1
0
1
2: 18bit MSB Justified
3: I
Figure 3
Figure 4
2
S Compatible
Table 2 . Serial Data Modes
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| AK4319A | 18Bit SCF DAC |
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| AK4340_06 | 192kHz 24-Bit Stereo ツヒ DAC with 2Vrms Output |
| AK4340 | 192kHz 24-Bit Stereo DAC with 2Vrms Output |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4318VM | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Audio Digital-to-Analog Converter |
| AK4318VS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Audio Digital-to-Analog Converter |
| AK4319A | 制造商:AKM 制造商全稱:AKM 功能描述:18Bit SCF DAC |
| AK4319AVM | 制造商:AKM 制造商全稱:AKM 功能描述:18Bit SCF DAC |
| AK4319VM | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:4319VM |
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