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TS3A225E Datasheet(PDF) 3 Page - Texas Instruments |
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TS3A225E Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 37 page  TS3A225E www.ti.com SCDS329A – AUGUST 2012 – REVISED MAY 2013 PIN DESCRIPTION – WCSP PIN # PIN WCSP NAME TYPE DESCRIPTION A1 SCL I/O Clock from I2C bus. This can be connected to VDD if I2C is not used. A2 SDA I/O Bidirectional data from/to I2C bus. This can be connected to VDD if I2C is not used. This pin is used to change the device I2C address in an I2C system to avoid address conflict. A3 ADDR_SEL I/O Please see the External Pin Connection section for more details. This pin can be grounded if not needed. A rising edge from low to high on this pin triggers the detection. This pin can be connected to A4 DET_TRIGGER I/O the headset jack to allow automatic pull-up to supply after headset insertion to initialize detection sequence. The detection trigger can be disabled or activated in I2C Connected to the SLEEVE segment of the jack. If SLEEVE segment on plug is MIC signal, B1 SLEEVE_SENSE I/O this is connected to MICp. If not, this is connected to MICn and becomes the remote sensing feedback for the headphone. B2 VDD Supply Power supply Headphone ground connection (Current return path to headphone amplifier), switch ground B3 GND Ground reference. Headphone current return path if SLEEVE is GND for headset. Connect to SLEEVE with low B4 SLEEVE I/O DCR trace. Connected to the RING2 segment of the jack. If RING2 segment on plug is MIC signal, this C1 RING2_SENSE I/O is connected to MICp. If not, this is connected to MICn and becomes the remote sensing feedback for the headphone. C2 VDD Supply Power supply Headphone ground connection (Current return path to headphone amplifier), switch ground C3 GND Ground reference. Headphone current return path if RING2 is GND for headset. Connect to RING2 with low C4 RING2 I/O DCR trace. D1 MICn I/O Microphone signal reference connection to codec. D2 MICp I/O Microphone signal connection to codec. Microphone bias should be fed into this pin. D3 TIP_SENSE I/O Connected to the TIP segment of the headphone jack Open Drain output. When pulled-low, it indicate that a mic is detected on the headset (switch D4 /MIC_PRESENT Output for HDA sense resistor or INT output in an I2S based system. Default behavior is a hardware pulldown for HDA resistor. Programmable through I2C into an interrupt.) Copyright © 2012–2013, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: TS3A225E |
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