AK4695 Datasheet, PDF (53/107 Pages) Asahi Kasei Microsystems – 24bit 4ch CODEC with MIC/HP/SPK/LINE-AMP

[AK4695]
VL3X/Y4-0 bits
00H
01H
02H
:
1EH
1FH
Dynamic Volume Control Point
[dB]
Step
0
1.5
3.0
:
1.5dB
45.0
46.5
Table 49. DVLC Point Setting for X/Y3
Slope Setting
L1G = ^Y1L
X1_L
x 16, L2G =
(Y2_L – Y1_L)
(X2_L – X1_L)
x 16,
(default)
L3G = ^{(Y3L – Y2L)} x 16, L4G = ^{(Y4L – Y3L)} x 16,
(X3_L – X2_L)
(X4_L – X3_L)
The results calculated by the equations above should be rounded off to integer. These integers are slope data. X1/2/3_L
and Y1/2/3_L values must be set to keep the Slope Data 127 or less (Gain ≤ 18dB).
L1G6-0 bits, L2G6-0 bits,
L3G6-0 bits, L4G6-0 bits
Slope Data
Gain [dB]
(20 log (Slope Data / 16))
00H
0
-∞
(default)
01H
1
-24.08
02H
2
-18.06
:
:
:
10H
16
0
:
:
:
7EH
126
17.93
7FH
127
17.99
Table 50. DVLC Slope Setting for Low Frequency Range
MS1463-E-01
- 53 -
2014/12