參數(shù)資料
型號: AK4343
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: Stereo DAC with HP/RCV/SPK-AMP
中文描述: 立體聲DAC惠普/垃圾車/胰腎聯(lián)合移植腺苷
文件頁數(shù): 44/98頁
文件大?。?/td> 851K
代理商: AK4343
ASAHI KASEI
[AK4343]
MS0478-E-01
2006/10
- 44 -
Digital Volume at ALC Block (Manual Mode)
The digital volume at ALC block 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, LMTH1-0 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.
AVL7-0 and AVR7-0 bits set the gain of the volume control at ALC block (Table 32). The AVOL value is changed at
zero crossing or timeout. Zero crossing timeout period is set by ZTM1-0 bits.
When ALC is not used, AVL7-0 and AVR7-0 bits should be set to “ 91H” (0dB).
AVL7-0
AVR7-0
F1H
+36.0
F0H
+35.625
EFH
+35.25
:
:
E2H
+30.375
E1H
+30.0
E0H
+29.625
:
:
03H
53.25
02H
53.625
01H
54
00H
MUTE
Table 32. ALC Block Digital Volume Setting
Default
GAIN (dB)
Step
0.375dB
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