AK4601VQ Datasheet, PDF (74/111 Pages) Asahi Kasei Microsystems – Audio HUB CODEC with Digital Mixer

[AK4601]
■ Vol
The AK4601 has three digital volume circuits (+12~-115dB, 0.5dB steps) that have independent Lch and
Rch.
VOL1 Lch
VOL1L[7:0]
00h
01h
02h
:
17h
18h
19h
:
FDh
FEh
FFh
VOL1 Rch
VOL1R[7:0]
00h
01h
02h
:
17h
18h
19h
:
FDh
FEh
FFh
VOL2 Lch VOL2 Rch VOL3 Lch VOL3 Rch
VOL2L[7:0] VOL2R[7:0] VOL3L[7:0] VOL3R[7:0]
00h
00h
00h
00h
01h
01h
01h
01h
02h
02h
02h
02h
:
:
:
:
17h
17h
17h
17h
18h
18h
18h
18h
19h
19h
19h
19h
:
:
:
:
FDh
FDh
FDh
FDh
FEh
FEh
FEh
FEh
FFh
FFh
FFh
FFh
Table 36. Digital Volume Settings
Attenuation
Level
+12.0dB
+11.5dB
+11.0dB
:
+0.5dB
0.0dB
-0.5dB
:
-114.5dB
-115.0dB
Mute (-∞)
(default)
ATSPVOL bit controls transition time between setting values of the volume.
MODE ATSPVOL ATT speed
0
0
4/fs
(default)
1
1
16/fs
Table 37. Volume Transition Time
When changing output levels, transitions are executed via soft changes; thus no switching noise occurs
during these transitions. In Mode 0, it takes 1020/fs (21.3ms@fs=48kHz) from 18H(0dB) to FFH(MUTE).
If the PDN pin goes to “L”, each channel of volume circuit is initialized to 18H.
ATSPVOL
0
1
00h ↔ FFh Transition Time
LRCK Cycle
fs=48kHz fs=44.1kHz fs=8kHz
1020/fs
21.3ms
23.1ms
127.5ms
4080/fs
85.0ms
92.5ms
510.0ms
Table 38. Volume Transition Time between 00h and FFh
(default)
016000391-E-01
- 74 -
2016/12