參數(shù)資料
型號: AK5701KN
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: 16-Bit ツヒ Stereo ADC with PLL & MIC-AMP
中文描述: 16位ツヒ立體聲ADC帶鎖相環(huán)
文件頁數(shù): 38/64頁
文件大小: 747K
代理商: AK5701KN
[AK5701]
Input Digital Volume (Manual Mode)
The input digital volume becomes a manual mode when ALC bit is “0”. This mode is used in the case shown below.
1.
After exiting reset state, set-up the registers for the ALC operation (ZTM1-0, LMTH and etc)
2.
When the registers for the ALC operation (Limiter period, Recovery period and etc) are changed.
For example; when the change of the sampling frequency.
3.
When IVOL is used as a manual volume.
IVL7-0 and IVR7-0 bits set the gain of the volume control (
timeout. Zero crossing timeout period is set by ZTM1-0 bits.
If IVL7-0 or IVR7-0 bits are written during PMADL=PMADR bits = “0”, IVOL operation starts with the written values
at the end of the ADC initialization cycle after PMADL or PMADR bit is changed to “1”.
IVL7-0
GAIN (dB)
IVR7-0
F1H
+36.0
F0H
+35.625
EFH
+35.25
:
:
92H
+0.375
91H
0.0
90H
0.375
:
:
03H
53.25
02H
53.625
01H
54
00H
MUTE
Table 29. Input Digital Volume Setting
Table 29
). The IVOL value is changed at zero crossing or
(default)
Step
0.375dB
MS0404-E-02
2007/08
- 38 -
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