AK4695 Datasheet, PDF (60/107 Pages) Asahi Kasei Microsystems – 24bit 4ch CODEC with MIC/HP/SPK/LINE-AMP

[AK4695]
Slope Setting
H1G = ^Y1H
X1_H
x 16, H2G =
(Y2_H – Y1_H)
(X2_H – X1_H)
x 16,
H3G = ^{(Y3H – Y2H)} x 16, H4G = ^{(Y4H – Y3H)} x 16
(X3_H – X2_H)
(X4_H – X3_H)
The results calculated by the equations above should be rounded off to integer. These integers are slope data. X1/2/3_H
and Y1/2/3_H values must be set to keep the Slope Data 127 or less (Gain ≤ 18dB).
H1G6-0 bits, H2G6-0 bits,
H3G6-0 bits, H4G6-0 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 59. DVLC Slope Setting for High Frequency Range
MS1463-E-01
- 60 -
2014/12