ak4368 AKM Semiconductor, Inc., ak4368 Datasheet - Page 26

• Manufacturer Part Number: ak4368
• Description: Dac With Built-in Pll & Hp-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
[3] Example of ALC Operation
The following registers should not be changed during the ALC operation. These bits should be changed after the ALC
operation is finished by ALC bit = “0” or PMDAC bits = “0”.
MS0529-E-00
Register Name
ROTM1-0
REF7-0
LMAT1-0
RATT
ALC
• LMAT1-0, ROTM1-0, RATT, REF7-0
WR (LMAT1-0, RATT, ROTM1-0; ALC= “1”)
Comment
Zero crossing timeout period
Maximum gain at recovery operation
Limiter ATT step
Recovery GAIN step
ALC enable
Note: WR: Write
ALC Operation
WR (REF7-0)
ALC = OFF
Figure 19. Registers set-up sequence at ALC operation
Table 16. Example of the ALC setting
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Data
C1H
00
00
0
1
fs=16kHz
Example:
Operation
+18dB
Enable
1 step
1 step
64ms
Recovery Cycle = 46ms@44.1kHz
Limiter and Recovery Step = 1
Maximum Gain = +18dB
ALC bit = “1”
(1) Addr=0AH, Data=C1H
(2) Addr=0BH, Data=30H
Data
C1H
01
00
0
1
fs=44.1kHz
Operation
[AK4368EG]
Enable
+18dB
1 step
1 step
46ms
2006/07