Catalog
SP3T Switch with Impedance Detection Micro-USB Switch
Key Features
• Compatible AccessoriesUSB Data CableUART CableCharger (Dedicated Charger or Host/Hub Charger)Stereo Headset With MicIntegrated LDOs for VREFand Mic BiasUSB Path Supports USB 2.0 High SpeedAudio Path Provides Negative Rail Support and Click/Pop ReductionSupports Factory Test Mode1.8-V Compatible I2C InterfaceESD Performance Tested Per JESD 222000-V Human-Body Model(A114-B, Class II)1000-V Charged-Device Model (C101)ESD Performance DP/DM/ID/VBUSto GND±8-kV Contact Discharge (IEC 61000-4-2)±15-kV Air Gap Discharge (IEC 61000-4-2)APPLICATIONSCellular TelephonesCompatible AccessoriesUSB Data CableUART CableCharger (Dedicated Charger or Host/Hub Charger)Stereo Headset With MicIntegrated LDOs for VREFand Mic BiasUSB Path Supports USB 2.0 High SpeedAudio Path Provides Negative Rail Support and Click/Pop ReductionSupports Factory Test Mode1.8-V Compatible I2C InterfaceESD Performance Tested Per JESD 222000-V Human-Body Model(A114-B, Class II)1000-V Charged-Device Model (C101)ESD Performance DP/DM/ID/VBUSto GND±8-kV Contact Discharge (IEC 61000-4-2)±15-kV Air Gap Discharge (IEC 61000-4-2)APPLICATIONSCellular Telephones
Description
AI
The TSU5511 is designed to interface the cell phone UART, USB, and audio chips with external peripherals via a micro-USB connector. The switch features impedance detection for identification of various accessories that are attached through DP and DM of the micro-USB port. When an accessory is plugged into the micro-USB port, the switch uses a detection mechanism to identify the accessory (see State Machine for details). It will then switch to the appropriate channel—data, audio, or UART.
The TSU5511 has an I2C interface for communication with the cellphone baseband or applications processor. An interrupt is generated when anything plugged into the micro-USB is detected. Another interrupt is generated when the device is unplugged.
The TSU5511 is designed to interface the cell phone UART, USB, and audio chips with external peripherals via a micro-USB connector. The switch features impedance detection for identification of various accessories that are attached through DP and DM of the micro-USB port. When an accessory is plugged into the micro-USB port, the switch uses a detection mechanism to identify the accessory (see State Machine for details). It will then switch to the appropriate channel—data, audio, or UART.
The TSU5511 has an I2C interface for communication with the cellphone baseband or applications processor. An interrupt is generated when anything plugged into the micro-USB is detected. Another interrupt is generated when the device is unplugged.