max98088 Maxim Integrated Products, Inc., max98088 Datasheet - Page 109

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

The IC features jack detection that can detect the inser-
tion and removal of a jack as well as the load type. When
a jack is detected, an interrupt on IRQ can be triggered
to alert the microcontroller of the event. Figure 32 shows
the typical configuration for jack detection.
When the IC is in normal operation and the MICBIAS is
enabled, jack insertion and removal can be detected
Table 32. Change in JKSNS Upon Jack Removal
Figure 32. Typical Configuration for Jack Detection
Table 31. Change in JKSNS Upon Jack Insertion
GND
MIC
GND
GND
JACK TYPE
JACK TYPE
GND
MIC
Jack Detection and Removal
R
R
GND
GND
L
L
Jack Detection
R
R
with FLEXSOUND Technology
L
L
through JACKSNS. To detect a jack insertion and
removal, the ICs must be powered on and MICBIAS
enabled. Set JDETEN, MBEN, BIASEN, and VCMEN bits
to enable jack detection circuitry. JACKSNS is pulled up
by MICBIAS as long as no load is applied to JACKSNS.
Table 31 shows the change in JKSNS that occurs when
a jack is inserted and removed.
HPL
HPR
Stereo Audio Codec
MBEN = 1, BIASEN = 1, VCMEN = 1
MBEN = 1, BIASEN = 1, VCMEN = 1
MICBIAS
JACKSNS
MIC1P
JKSNS: 1 è 0
JKSNS: 1 è 0
JKSNS: 0 è 1
JKSNS: 0 è 1
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