Datasheet

DLA register is used to attenuate the level of
audio output at the Left Channel using the butter-
fly shown in Fig. 12. When the register is set to
255 (0xFF), the maximum attenuation is
achieved.
A decimal unit correspond to an attenuation step
of 1 dB.
DLA
Address: 0x46
Type: R/W
Software Reset: 0x00
Hardware Reset: 0x00
MSB LSB
b7 b6 b5 b4 b3 b2 b1 b0 Description
DLA7 DLA6 DLA5 DLA4 DLA3 DLA2 DLA1 DLA0 OUTPUT ATTENUATION
00000000 NO ATTENUATION
00000001 -1dB
00000010 -2dB
:::::::: :
01100000 -96dB
DLB
Address: 0x47
Type: R/W
Software Reset: 0xFF
Hardware Reset: 0xFF
MSB LSB
b7 b6 b5 b4 b3 b2 b1 b0 Description
DLB7 DLB6 DLB5 DLB4 DLB3 DLB2 DLB1 DLB0 OUTPUT ATTENUATION
00000000 NO ATTENUATION
00000001 -1dB
00000010 -2dB
:::::::: :
01100000 -96dB
DLB register is used to re-direct the Left Channel
on the Right, or to mix both the Channels.
Default value is 0x00, corresponding at the maxi-
mum attenuation in the re-direction channel.
X
DLA
+
X
Output Left ChannelDSP Left Channel
DLB
X
DRA
+
X
Output Right Channel
DSP Right Channel
DRB
D97AU667
Figure 12.
Volume Control and Output Setup
STA013 - STA013B - STA013T
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