max98088 Maxim Integrated Products, Inc., max98088 Datasheet - Page 100

• Manufacturer Part Number: max98088
• Description: Stereo Audio Codec With Flexsound Technology
• Manufacturer: Maxim Integrated Products, Inc.

Table 24. Excursion Limiter Registers
Stereo Audio Codec
with FLEXSOUND Technology
100
REGISTER
0x41
0x43
0x42
BIT
6
5
4
1
0
6
5
4
3
2
1
0
DHPUCF
DHPLCF
ALCRLS
DHPTH
NAME
Excursion Limiter Corner Frequency
The excursion limiter has limited sliding range and minimum corner frequencies. Listed
below are all the valid filter combinations.
LOWER CORNER
thresholds.
000 = 0.34V
001 = 0.71V
010 = 1.30V
011 = 1.77V
100 = 2.33V
101 = 3.25V
110 = 4.25V
111 = 4.95V
ALC and Excursion Limiter Release Time
Sets the release time for both the ALC and Excursion Limiter. See the Automatic Level
Control section for ALC release times. Excursion limiter release time is defined as the
time required to slide from the high corner frequency to the low corner frequency.
Excursion Limiter Threshold
Measured at the Class D speaker amplifier outputs. Signals above the threshold use
the upper corner frequency. Signals below the threshold use the lower corner fre-
quency. V
Programmable
Programmable
Programmable
Programmable
FREQUENCY
using biquad
using biquad
using biquad
using biquad
Programmable using biquad
200Hz
400Hz
400Hz
Excursion limiter disabled
BAT
P
P
P
P
P
P
P
P
must correctly reflect the voltage of SPKLVDD to achieve accurate
VALUE
400Hz
600Hz
800Hz
1kHz
000
001
010
011
100
101
110
111
UPPER CORNER
FREQUENCY
400Hz
600Hz
800Hz
400Hz
600Hz
800Hz
1kHz
DESCRIPTION
CORNER FREQUENCY
EXCURSION LIMITER RELEASE TIME (s)
MINIMUM BIQUAD
100Hz
200Hz
300Hz
400Hz
500Hz
—
—
—
—
—
—
—
—
Reserved
Reserved
0.25
0.25
0.5
4
2
1
DHPUCF DHPLCF
000
001
010
011
100
000
001
010
011
001
010
011
100
00
00
00
00
00
11
01
10
10
11
11
11
11