参数资料
型号: MAX9888EWY+T
厂商: Maxim Integrated Products
文件页数: 3/115页
文件大小: 0K
描述: IC CODEC AUDIO FLEXSOUND 63WLP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
系列: DirectDrive®, FLEXSOUND™
类型: D 类
输出类型: 3 通道,带立体声耳机
在某负载时最大输出功率 x 通道数量: 1.37W x 2 @ 8 欧姆; 40mW x 2 @ 16 欧姆
电源电压: 2.8 V ~ 5.5 V
特点: 消除爆音,差分输入,I²S,麦克风,静音,关机
安装类型: 表面贴装
供应商设备封装: 63-WLP
封装/外壳: 63-WFBGA,WLCSP
包装: 带卷 (TR)
配用: MAX9888EVKIT+-ND - KIT EVALUATION FOR MAX9888
Stereo Audio CODEC
with FlexSound Technology
MAX9888
100
Jack Detection
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.
Jack Insertion
To detect a jack insertion, the IC must have a power
supply and MICBIAS should be disabled. Set JDETEN
to enable jack detection circuitry and apply a pullup cur-
rent to JACKSNS. Set JDWK to minimize supply current.
Clear JDWK to differentiate between headsets with a
microphone and headphones without a microphone. The
voltage on JACKSNS is equal to SPKLVDD as long as no
load is applied to JACKSNS. Table 32 shows the change
in JKSNS that occurs when a jack is inserted.
Accessory Button Detection
After jack insertion, the MAX9888 can detect button
presses on accessories that include a microphone and
a switch that shorts the microphone signal to ground.
Set JDETEN to enable jack detection circuitry. A pullup
current is automatically applied to JACKSNS if MICBIAS
is disabled. Clear JDWK to allow differentiation between
the microphone load and a short to ground. Button
presses can be detected both when MICBIAS is enabled
and disabled. Table 33 shows the change in JKSNS that
occurs when the accessory button is pressed.
Figure 32. Typical Configuration for Jack Detection
Table 32. Change in JKSNS Upon Jack Insertion
Table 33. Change in JKSNS Upon Button Press
JACK TYPE
JDWK = 1
JDWK = 0
JKSNS: 11 è 00
JKSNS: 11 è 01
JACK TYPE
MICBIAS ENABLED OR DISABLED
JKSNS: 01 è 00
HPL
MICBIAS
JACKSNS
MIC1P
HPR
GND
R
L
MIC
GND
R
L
MIC
GND
R
L
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