STA308A View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'STA308A' PDF : 63 Pages View PDF
STA308A
Registers
7.2.5 Configuration register E (0x04)
7.2.6
D7
C8BO
0
D6
C7BO
0
D5
C6BO
0
D4
C5BO
0
D3
C4BO
0
D2
C3BO
0
D1
C2BO
0
D0
C1BO
0
Bit RW RST
Name
Description
0
RW
0
C1BO
1
RW
0
C2BO
2
RW
0
C3BO
3
RW
0
C4BO
4
RW
0
C5BO
5
RW
0
C6BO
6
RW
0
C7BO
7
RW
0
C8BO
Channels 1, 2, 3, 4, 5, 6, 7, and 8 binary output
mode enable bits. A setting of 0 indicates ordinary
DDX tristate output. A setting of 1 indicates binary
output mode.
Each individual channel output can be set to output a binary PWM stream. In this mode
output A of a channel will be considered the positive output and output B is negative inverse.
Configuration register F (0x05)
D7
PWMS2
0
D6
PWMS1
0
D5
PWMS0
0
D4
BQL
0
D3
PSL
0
D2
DEMP
0
D1
DRC
0
D0
HPB
0
Bit RW RST
Name
Description
0
RW
0
HPB
High-pass filter bypass bit: setting of one bypasses
internal AC coupling digital high-pass filter
The STA308A 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.
If HPB = 1, then the filter that the high-pass filter utilizes is made available as user-
programmable biquad#1.
Bit RW RST
Name
Description
1
RW
0
DRC
Dynamic range compression/anti-clipping
0: limiters act in anti-clipping mode
1: limiters act in dynamic range compression mode
Both limiters can be used in one of two ways, anti-clipping or dynamic range compression.
When used in anti-clipping mode the limiter threshold values are constant and dependent on
the limiter settings.
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