max98088 Maxim Integrated Products, Inc., max98088 Datasheet - Page 110

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

Table 33. Jack Detection Registers
Table 34. Battery Measurement Registers
Stereo Audio Codec
with FLEXSOUND Technology
The IC measures the voltage applied to SPKLVDD (typically the battery voltage) and reports the value in register 0x03.
This value is also used by the speaker limiter circuitry to set accurate thresholds. When the battery measurement func-
tion is disabled, the battery voltage is user programmable.
110
(Read Only)
REGISTER
REGISTER
0x4B
0x02
0x03
0x51
BIT
BIT
6
7
1
0
4
3
2
1
0
7
6
3
2
1
0
PERFMODE
HPPLYBCK
PWRSV8K
JDETEN
VBATEN
PWRSV
JKSNS
NAME
NAME
SHDN
JDEB
VBAT
Battery Voltage
Read VBAT when V
= 0 to allow proper speaker amplifier signal processing. Calculate the battery voltage
using the following formula:
V
See Power Management
Battery Measurement Enable. Enables an internal ADC to measure V
0 = Disabled (register 0x03 readable and writeable)
1 = Enabled (register 0x03 read only)
See the Power Management section.
See the Power Management section.
See the Power Management section.
See the Power Management section.
JACKSNS State
Reports the status of JACKSNS when JDETEN = 1, MBEN = 1, BIASEN = 1, and
VCMEN = 1.
0 = JACKSNS low
1 = JACKSNS high
Jack Detection Enable
0 = Disabled
1 = Enabled
Jack Detection Debounce
Configures the debounce time for setting JDET.
00 = 25ms
01 = 50ms
10 = 100ms
11 = 200ms
BATTERY
= 2.55V + [VBAT/10]
BATEN
= 1 to determine V
DESCRIPTION
DESCRIPTION
SPKLVDD
. Program VBAT when V
Battery Measurement
SPKLVDD
BATEN
.