AK4368 Datasheet, PDF (26/58 Pages) Asahi Kasei Microsystems – PLL & HP-AMP DAC

ASAHI KASEI
[AK4368]
[3] ALCಈ࡞ઃఆखॱྫ
Register Name
ROTM1-0
REF7-0
LMAT1-0
RATT
ALC
Comment
fs=16kHz
Data
Operation
Zero crossing timeout period
00
64ms
Maximum gain at recovery operation C1H
+18dB
Limiter ATT step
Recovery GAIN step
00
1 step
0
1 step
ALC enable
1
Enable
Table 16. ALCઃఆྫ
fs=44.1kHz
Data
Operation
01
46ms
C1H
+18dB
00
1 step
0
1 step
1
Enable
ALCಈ࡞த͸ɺҎԼͷϏοτ΁ͷมߋΛ͢·͠ࢭېɻ͜ΕΒͷϏοτΛมߋ͢Δ৔߹͸ɺALCಈ࡞Λऴྃ(ALC bit =
“0”·ͨ͸PMDAC bit = “0”)͔ͯ͠ΒߦͬͯԼ͍͞ɻ
ɾLMAT1-0, ROTM1-0, RATT, REF7-0ͷ֤Ϗοτ
ALC = OFF
WR (REF7-0)
WR (LMAT1-0, RATT, ROTM1-0; ALC= “1”)
Example:
Recovery Cycle = 46ms@44.1kHz
Limiter and Recovery Step = 1
Maximum Gain = +18dB
ALC bit = “1”
ALC Operation
Note: WR: Write
(1) Addr=0AH, Data=C1H
(2) Addr=0BH, Data=30H
Figure 19. ALCಈ࡞ઃఆखॱྫ
MS0409-J-01
- 26 -
2005/08