DP3T Switch 20-Pin DSBGA T/R

The TSU5611 is designed to interface the cellular 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 the State Machine for details). It will then switch to the appropriatechannel–data, audio, or UART. The TSU5611 has an I2C interface for communication with the cellular phone 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.

Compatible Accessories

• USB Data Cable
• UART Cable
• Charger (Dedicated Charger or Host/Hub Charger)
• Stereo Headset With Mic

Integrated LDOs for VREF and Mic Bias

USB and UART Path Supports USB 2.0 High Speed

Audio Path Provides Negative Rail Support and Click/Pop Reduction

Supports Factory Test Mode

1.8-V Compatible I²C Interface

ESD Performance Tested Per JESD 22

• 1500-V Human-Body Model
  (A114-B, Class II)
• 1000-V Charged-Device Model (C101)