STA333BW View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
STA333BW
STMicroelectronics
'STA333BW' PDF : 67 Pages View PDF
STA333BW
Register description
6.1.4
Configuration register D (addr 0x03)
D7
SME
0
D6
ZDE
1
D5
DRC
0
D4
BQL
0
D3
D2
D1
D0
PSL
DSPB
DEMP
HPB
0
0
0
0
High-pass filter bypass
Table 26. High-pass filter bypass
Bit R/W RST
Name
0
R/W
0
HPB
Description
1: bypass internal AC coupling digital high-pass filter
The STA333BW features an internal digital high-pass filter for the purpose of AC coupling.
The purpose of this filter is to prevent DC signals from passing through a FFX amplifier. DC
signals can cause speaker damage. When HPB = 0, this filter is enabled.
De-emphasis
Table 27. De-emphasis
Bit R/W RST
Name
1
R/W
0
DEMP
Description
0: no de-emphasis
1: enable de-emphasis on all channels
DSP bypass
Table 28. DSP bypass
Bit R/W RST
Name
2
R/W
0
DSPB
Description
0: normal operation
1: bypass of biquad and bass / treble functions
Setting the DSPB bit bypasses the EQ function of the STA333BW.
Postscale link
Table 29. Postscale link
Bit R/W RST
Name
3
R/W
0
PSL
Description
0: each channel uses individual postscale value
1: each channel uses channel 1 postscale value
Postscale function can be used for power-supply error correction. For multi-channel
applications running off the same power-supply, the postscale values can be linked to the
value of channel 1 for ease of use and update the values faster.
Doc ID 13773 Rev 3
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