STA335BW
Register description
5.3.3
Over-current warning detect adjustment bypass
Bit
R/W
RST
Name
Description
0 – Over-Current warning Adjustment enabled
1 – Over-Current warning Adjustment disabled
7
R/W
1
OCRB
The OCWARN input is used to indicate an over-current warning condition. When OCWARN
is asserted (set to 0), the power control block forces an adjustment to the modulation limit
(default is -3 dB) in an attempt to eliminate the over-current warning condition. Once the
over-current warning volume adjustment is applied, it remains in this state until reset is
applied. The level of adjustment can be changed via the TWOCL (thermal warning/over
current limit) setting which is address 0x37 of the user defined coefficient RAM.
5.4
Configuration register D (address 0x03)
D7
D6
D5
D4
D3
D2
D1
D0
MME
0
ZDE
1
DRC
0
BQL
0
PSL
0
DSPB
0
DEMP
0
HPB
0
5.4.1
High-pass filter bypass
Bit
R/W
RST
Name
Description
Setting of one bypasses internal AC coupling digital
high-pass filter
0
R/W
0
HPB
The STA335BW 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 DDX amplifier. DC
signals can cause speaker damage. When HPB=0, this filter is enabled.
5.4.2
5.4.3
De-emphasis
Bit
R/W
RST
Name
Description
0 – No de-emphasis
1 – De-emphasis
1
R/W
0
DEMP
Setting the DEMP bit enables de-emphasis on all channels
DSP bypass
Bit
R/W
RST
Name
Description
0 – Normal operation
1 – Bypass of biquad and bass/treble functionality
2
R/W
0
DSPB
Setting the DSPB bit bypasses the EQ functionality of the STA335BW.
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STMICROELECTRONICS [ ST ]
