參數(shù)資料
型號(hào)： AK4385
廠商： Asahi Kasei Microsystems Co.,Ltd
英文描述： 108dB 192kHz 24-Bit 2ch ツヒ DAC
中文描述： 一〇八分貝192kHz的24位2通道ツヒ數(shù)模轉(zhuǎn)換器
文件頁(yè)數(shù)： 15/21頁(yè)
文件大?。?/td> 285K
代理商： AK4385
ASAHI KASEI
[AK4385]
MS0246-E-00
2003/07
- 15 -
Reset Function
When RSTN=0, DAC is powered down but the internal register values are not initialized. The analog outputs go to
VCOM voltage and DZF pin goes to “H”. Figure 7 shows the example of reset by RSTN bit.
Internal
State
RSTN bit
Digital Block Power-down
Normal Operation
GD
GD
“0” data
D/A Out
(Analog)
D/A In
(Digital)
Clock In
MCLK,LRCK,BICK
(1)
(3)
DZF
(3)
(1)
(2)
Normal Operation
2/fs(5)
Internal
RSTN bit
2~3/fs (6)
3~4/fs (6)
Don’t care
(4)
Notes:
(1) The analog output corresponding to digital input has the group delay (GD).
(2) Analog outputs go to VCOM voltage (VDD/2).
(3) Click noise occurs at the edges(“
↑
↓
”) of the internal timing of RSTN bit. This noise is output even if “0” data is
input.
(4) The external clocks (MCLK, BICK and LRCK) can be stopped in the reset mode (RSTN = “L”).
(5) DZF pins go to “H” when the RSTN bit becomes “0”, and go to “L” at 2/fs after RSTN bit becomes “1”.
(6) There is a delay, 3~4/fs from RSTN bit “0” to the internal RSTN bit “0”, and 2~3/fs from RSTN bit “1” to the
internal RSTN “1”.
Figure 7. Reset Sequence Example
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