參數(shù)資料
型號: AK4363
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: 96KHz 24 Bit ΔΣ DAC with PLL(帶鎖相環(huán)的采樣速度96KHz,24位立體聲 ΔΣ D/A轉(zhuǎn)換器)
中文描述: 96KHz的24位ΔΣDAC,具有鎖相環(huán)(帶鎖相環(huán)的采樣速度96KHz的24位立體聲ΔΣ的D / A轉(zhuǎn)換器)
文件頁數(shù): 18/29頁
文件大?。?/td> 248K
代理商: AK4363
ASAHI KASEI
[AK4363]
MS0015-E-01
2000/07
- 18 -
n
Zero detection
When the input data at both channels is continuously zeros for 8192 LRCK cycles, DZF pin goes to “H”. DZF pin
immediately goes to “L” if input data is not zero after going DZF “H”. If RSTN bit becomes “0”, DZF pin goes to “H”.
DZF pin goes to “L” at 4
5/fs after RSTN bit returns to “1”.
n
Soft mute operation
Soft mute operation is performed at digital domain. When the serial control register data of SMUTE goes “1”, the output
signal is attenuated by -
during 1024 LRCK cycles. When SMUTE is returned to “0”, the mute is cancelled and the
output attenuation gradually changes to 0dB during 1024 LRCK cycles. If the soft mute is cancelled within 1024 LRCK
cycles after starting the operation, the attenuation is discontinued and returned to 0dB. The soft mute is effective for
changing the signal source without stopping the signal transmission.
SMUTE bit
Attenuation
DZF pin
1024/fs
(1)
0dB
-
AOUT
1024/fs
8192/fs
GD
(2)
GD
(3)
(4)
Notes:
(1) The output signal is attenuated by -
during 1024 LRCK cycles (1024/fs).
(2) Analog output corresponding to digital input have the group delay (GD).
(3) If the soft mute is cancelled within 1024 LRCK cycles, the attenuation is discontinued and returned to 0dB.
(4) When the input data at both channels are continuously zeros for 8192 LRCK cycles, DZF pin goes to “H”.
DZF pin immediately goes to “L” if input data are not zero after going DZF “H”.
Figure 6. Soft mute and zero detection
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