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參數(shù)資料
型號(hào): MAX9888EVKIT+
廠商: Maxim Integrated Products
文件頁數(shù): 3/115頁
文件大小: 0K
描述: KIT EVALUATION FOR MAX9888
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 1
系列: DirectDrive®, FLEXSOUND™
相關(guān)產(chǎn)品: MAX9888EWY+T-ND - IC CODEC AUDIO FLEXSOUND 63WLP
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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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX9888EVKIT+ 功能描述:音頻 IC 開發(fā)工具 MAX9888 Eval Kit RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V
MAX9888EWY+T 功能描述:接口—CODEC Stereo Audio CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
MAX9889EWO+T 功能描述:接口—CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
MAX988ESA 功能描述:校驗(yàn)器 IC Single uPower Comparator RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓(最大值):6 mV 電源電流(最大值):1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
MAX988ESA+ 功能描述:校驗(yàn)器 IC Single uPower Comparator RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓(最大值):6 mV 電源電流(最大值):1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
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