AK4584_01 Datasheet, PDF (41/53 Pages) Asahi Kasei Microsystems – 24Bit 96kHz Audio CODEC with DIT/DIR

ASAHI KASEI
[AK4584]
Data
255 - 165
164
163
162
:
130
129
128
127
126
125
:
112
111
110
:
96
95
94
:
80
79
78
:
64
63
62
:
48
47
46
:
32
31
30
:
16
15
14
:
5
4
3
2
1
0
Internal
(DATT)
-
-
-
-
-
-
-
-
8031
7775
7519
:
4191
3999
3871
:
2079
1983
1919
:
1023
975
943
:
495
471
455
:
231
219
211
:
99
93
89
:
33
30
28
:
10
8
6
4
2
0
Gain (dB) Step width (dB)
+18
-
+18
-
+17.5
0.5
IPGA
+17
0.5
:
0.5
Analog volume with 0.5dB step
+1.0
0.5
+0.5
0.5
0
0.5
0
-
−0.28
0.28
−0.57
0.29
:
:
−5.65
0.51
−6.06
0.41
−6.34
0.28
:
:
−11.74
0.52
−12.15
0.41
−12.43
0.28
:
:
−17.90
0.53
−18.32
0.42
−18.61
0.29
:
:
IATT
−24.20
−24.64
−24.94
:
0.54
0.43
External 128 levels are converted to internal
0.30
:
8032 linear levels of DATT. Internal DATT
soft-changes between data.
−30.82
0.58
−31.29
0.46
DATT=2^m x (2 x l + 33) – 33
−31.61
0.32
:
:
−38.18
0.67
m: MSB 3-bits of data
l: LSB 4-bits of data
−38.73
0.54
−39.11
0.38
:
:
−47.73
0.99
−48.55
0.83
−49.15
0.60
:
:
−58.10
1.58
−60.03
1.94
−62.53
2.50
−66.05
3.52
−72.07
6.02
MUTE
Table 23. IPGA Code Table
MS0118-E-00
- 41 -
2001/11