ak4373 ETC-unknow, ak4373 Datasheet - Page 54

• Manufacturer Part Number: ak4373
• Description: Low Power Stereo Dac With Hp/spk-amp
• Manufacturer: ETC-unknow

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The digital volume at ALC block changes to a manual mode when ALC bit is “0”. This mode is used in the case shown
below.
AVL7-0 and AVR7-0 bits set the gain of the volume control at ALC block
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).
MS0991-E-00
Digital Volume at ALC Block (Manual Mode)
1. After exiting reset state, set-up the registers for ALC operation (ZTM1-0, LMTH1-0 and etc)
2. When the registers for ALC operation (Limiter period, Recovery period and etc) are changed.
For example; when the change of the sampling frequency.
AVR7-0
AVL7-0
EFH
E2H
E1H
E0H
F1H
F0H
03H
02H
01H
00H
:
:
Table 30. ALC Block Digital Volume Setting
GAIN (dB)
+35.625
+30.375
+29.625
−53.625
+35.25
−53.25
MUTE
+36.0
+30.0
−54
:
:
- 54 -
0.375dB
Step
(Table
30). The AVOL value is changed at
(default)
[AK4373]
2008/09