参数资料
型号: MC34708VM
厂商: Freescale Semiconductor
文件页数: 91/159页
文件大小: 0K
描述: IC POWER MANAGEMENT 206MAPBGA
标准包装: 160
应用: 通用
电源电压: 1.8 V ~ 4.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 206-LFBGA
供应商设备封装: 206-MAPBGA(13x13)
包装: 托盘
Functional Block Description
Reset
VBUS_DET?
No
Yes
Active
Standby
Yes
ID_FLOAT?
No
R ID < 100 ? ?
No
Yes
Detection
Delay
ADC = 00000
No
ID_FLOAT?
No
ID_DET_EN
D?
Yes
Yes
DP ? 0.6V
DM > 0.8V
Yes
(Identification
Flow)
Start ADC to
measure R ID
R ID = Video
Yes
R ID = 75 ? ?
Yes
No
USB-OTG
Video cable?
Yes
A/V_CHG = 1
No
No
DM < 0.4V?
No
Yes
cable?
No
No
ID_FLOAT
Yes
DM ? 0.6V
ID_FLOAT?
Yes
USB host
UART jig
cable w/
boot option
UART jig
cable w/o
boot option
Phone
Powered
Device
Ye s R ID = UART
jig w/ boot?
No
Ye s R ID = UART
jig w/o boot?
No
Yes R ID =
102k ? ?
No
Audio
Type 1
TTY
Converter
UART
Cable
Yes
Yes
Yes
Video
cable
R ID = Audio
Type 1 ?
No
R ID = TTY
Converter?
No
R ID = UART
Cable?
No
ID_DET_EN
D?
Yes
R ID =
440k ? ?
No
R ID =
200k ? ?
No
No
Yes
Yes
Dedicated
Charger
5-Wire
Charger
No
DP < 0.4V?
Yes
USB
Charger
No
ID_DET_EN
D?
Yes
R ID = USB
jig w/ Boot?
No
R ID = USB
jig w/o Boot?
No
Yes
Yes
USB jig
cable w/
boot option
USB jig
cable w/o
boot option
Audio
Type2
Cable
Stuck Key
Process
Yes
Yes
R ID = Audio
Type2
Cable?
No
R ID = remote
key?
No
No
Unknown
Figure 21. Identification Flow State Diagram
7.8.4.3
Id Identification
A comparator monitors the ID pin impedance to ground. When a resistor less than 1.0 M ? is connected between the ID line and
the ground, the ID_FLOATS bit in the Interrupt Sense 0 register will be set to 0. When the resistor is removed, the ID_FLOATS
bit will be set to 1. A falling edge of this bit starts the identification flow, and a rising edge starts the detachment detection flow.
The ID_DET_END signal is used to indicate the end of the identification.
After the ID_FLOATS bit is set to 0, the identification flow is started, and an ADC_EN signal is set to enable an ADC conversion.
A 5-bit ID ADC is used to measure the ID resistance. The ADC is also used to identify what button is pressed in a cord remote
control when the attached accessory is an Audio Type 1 cable.
When the conversion completes, an ADC_STATUS bit is set and the ADC result value is sent to the ADC Manual SW/Result
register. The ADC_EN signal is cleared automatically after the conversion finishes.
If the ID resistance is below 2.0 k ? , the ADC Result is set to 00000. If the ID line is floating, the ADC Result is set to 11111.
7.8.4.4
Stuck Key Identification
When the ADC conversion is finished and the ADC result is found to be a value corresponding to a remote control key of Audio
Type 1 cable, a stuck key process flow will be initiated to determine whether a remote control key is stuck and to inform the
baseband of the stuck key status.
Figure 22 shows the stuck key process flow. If the stuck key is detected to be released within 1.5 s, the flow will return to re-start
the ID identification flow. Otherwise, a Stuck_Key Interrupt is set. When the key is released, a Stuck_Key_RCV Interrupt is
generated, and the identification flow is re-started to determine the ID resistance of the attached cable.
MC34708
Analog Integrated Circuit Device Data ?
91
Freescale Semiconductor
相关PDF资料
PDF描述
MC34710EWR2 IC PWR SUPPLY ADJ DUAL SW 32SOIC
MC34712EPR2 IC CONVERTER DDR 24QFN
MC34713EPR2 IC CONVERTER DDR 24QFN
MC34716EPR2 IC CONVERTER DDR 26QFN
MC34717EPR2 IC CONVERTER DDR 26QFN
相关代理商/技术参数
参数描述
MC34708VMR2 功能描述:PMIC 解决方案 PMIC 5S 6LDO BST 10BTADC RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel
MC34709 制造商:SPC Multicomp 功能描述:HEADER R/ANGLE 12WAY 制造商:SPC Multicomp 功能描述:HEADER, R/ANGLE, 12WAY 制造商:SPC Multicomp 功能描述:WIRE-BOARD CONN, RECEPTACLE, 12POS, 3MM; Series:2261(5561); Pitch Spacing:3mm; Contact Termination:Through Hole Right Angle; No. of Contacts:12; No. of Rows:2; Connector Mounting:PCB; Gender:Receptacle; Contact Material:Copper Alloy ;RoHS Compliant: Yes
MC34709VK 功能描述:PMIC 解决方案 PMIC 5SW, 6 LDO BST, 10 Bit ADC RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel
MC34709VKR2 功能描述:PMIC 解决方案 PMIC 5SW, 6 LDO BST, 10 Bit ADC RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel
MC3470N 制造商:Texas Instruments 功能描述: