sta333bwqs13tr STMicroelectronics, sta333bwqs13tr Datasheet - Page 32

• Manufacturer Part Number: sta333bwqs13tr
• Description: 2.1-channel High-efficiency Digital Audio System With Qsound Qhd
• Manufacturer: STMicroelectronics

Register description
6.3.3
6.4
6.4.1
6.4.2
32/71
Over-current warning detect adjustment bypass
Table 27.
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.
Configuration register D (0x03)
High-pass filter bypass
Table 28.
The STA333BWQS 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.
De-emphasis
Table 29.
Setting the DEMP bit enables de-emphasis on all channels
Bit
Bit
Bit
7
0
1
MME
D7
0
R/W
R/W
R/W
R/W
R/W
R/W
Over-current warning detect adjustment bypass
High-pass filter bypass
De-emphasis
ZDE
D6
1
RST
RST
RST
1
0
0
DRC
D5
0
OCRB
DEMP
Name
Name
Name
HPB
BQL
D4
0
0: over-current warning adjustment enabled
1: over-current warning adjustment disabled
Setting of one bypasses internal AC coupling digital
high-pass filter
0: no de-emphasis
1: de-emphasis
PSL
D3
0
DSPB
Description
Description
Description
D2
0
DEMP
D1
0
STA333BWQS
HPB
D0
0