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參數(shù)資料
| 型號： | AK4370 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | 24-Bit 2ch DAC with HP-AMP & Output Mixer |
| 中文描述： | 24位2通道DAC，具有惠普腺苷 |
| 文件頁數(shù)： | 23/49頁 |
| 文件大?。?/td> | 695K |
| 代理商： | AK4370 |
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ASAHI KASEI
[AK4370]
MS0595-E-00
2007/03
- 23 -
■
De-emphasis Filter
The AK4370 includes a digital de-emphasis filter (tc = 50/15
μ
s), using an IIR filter corresponding to three sampling
frequencies (32kHz, 44.1kHz and 48kHz). The de-emphasis filter is enabled by setting DEM1-0 bits (Table 9).
DEM1 bit
DEM0 bit
0
0
0
1
1
0
1
1
Table 9. De-emphasis Filter Frequency Select
■
Bass Boost Function
By controlling the BST1-0 bits, a low frequency boost signal can be output from DAC. The setting value is common for
both channels (Table 10).
BST1 bit
BST0 bit
0
0
0
1
1
0
1
1
Table 10. Low Frequency Boost Select
■
Digital Mixing Function
MONO1-0 bits select the digital data mixing for the DAC (Table 11).
MONO1 bit
MONO0 bit
0
0
0
1
1
0
1
1
(L+R)/2
Table 11. Mixer Setting
■
System Reset
PDN pin should be held to “L” upon power-up. The 4370 should be reset by bringing PDN pin “L” for 150ns or more. All
of the internal register values are initialized by the system reset. After exiting reset, VCOM, DAC, HPL, HPR, LOUT and
ROUT switch to the power-down state. The contents of the control register are maintained until the reset is completed.
The DAC exits reset and power down states by MCKI after the PMDAC bit is changed to “1”. The DAC is in power-down
mode until MCKI is input.
De-emphasis
44.1kHz
OFF
48kHz
32kHz
Default
BOOST
OFF
MIN
MID
MAX
Default
Lch
L
L
R
Rch
R
L
R
(L+R)/2
Default
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| AK4370VN | 24-Bit 2ch DAC with HP-AMP & Output Mixer |
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相關(guān)代理商/技術(shù)參數(shù) |
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| AK4370VN | 制造商:AKM 制造商全稱:AKM 功能描述:24-Bit 2ch DAC with HP-AMP & Output Mixer |
| AK4371 | 制造商:AKM 制造商全稱:AKM 功能描述:24bit DAC with Headphone Amplifier |
| AK4371VN | 制造商:AKM 制造商全稱:AKM 功能描述:DAC with built-in PLL & HP-AMP |
| AK4372 | 制造商:AKM 制造商全稱:AKM 功能描述:DAC with built-in PLL & HP-AMP |
| AK4372ECB | 制造商:AKM 制造商全稱:AKM 功能描述:DAC with built-in PLL & HP-AMP |
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