STA32813TR View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
STA32813TR Datasheet PDF : 57 Pages
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STA328
Register description
6.4
Configuration register D (addr 0x03)
D7
D6
D5
D4
D3
MME
ZDE
DRC
BQL
PSL
0
1
0
0
0
D2
DSPB
0
D1
DEMP
0
D0
HPB
0
Table 25. High-pass filter bypass
Bit R/W RST
Name
Description
0
RW 0
HPB
High-pass filter bypass bit.
0: AC coupling high pass filter enabled
1: AC coupling high pass filter disabled
The STA328 features an internal digital high-pass filter for the purpose of DC Blocking. The
purpose of this filter is to prevent DC signals from passing through a DDX® amplifier. DC
signals can cause speaker damage.
Table 26. De-emphasis
Bit R/W RST
Name
Description
1
RW 0
DEMP
De-emphasis:
0: no de-emphasis
1: de-emphasis
By setting this bit to 1, the de-emphasis will be implemented on all channels. DSPB (DSP
Bypass, Bit D2, CFA) bit must be set to 0 for de-emphasis to function.
Table 27. DSP bypass
Bit R/W RST
Name
Description
2
RW 0
DSPB
DSP bypass bit:
0: normal Operation
1: bypass of EQ and mixing functionality
Setting the DSPB bit bypasses all the EQ and mixing functionality of the STA328 core.
Table 28. Post-scale link
Bit R/W RST
Name
Description
3
RW 0
PSL
Post-scale link:
0: each channel uses individual post-scale value
1: each channel uses channel 1 post-scale value
Post-scale functionality is an attenuation placed after the volume control and directly before
the conversion to PWM. Post-scale can also be used to limit the maximum modulation index
and therefore the peak current. A setting of 1 in the PSL register will result in the use of the
value stored in channel 1 post-scale for all three internal channels.
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