TI-TS2A116E.pdf
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PRODUCTPREVIEW
Audio Codec
MIC_IN
SW1
DATA
GND
MIC_OUT
SW2
SW3
MIC_ DATA
GND
VDD
180Ω
360Ω
C3
R3 R4
C5
R2
TS2A116E
Cext
L
R
G M
Mobile Device
Accessory
R1
MIC_BIAS
MIC_IN
C1 C2
Application
Processor
UART TX
UART RX
VREF
Comparator
Level
Shifter
MEMS
Microphone
C4
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TS2A116E
SCDS355 –MAY 2014
TS2A116E Audio Accessory Communicator and Authentication IC
1 Features 3 Description
The TS2A116E device is designed for use with
1
• Single-Wire Communication Protocol by way of a
advanced headset accessories where a special
Single Contact Serial Interface
single-wire communication is used to identify the
• Designed to Work with a Self-Charged Capacitor
accessory and its remote control key presses.
from the Microphone Bias Voltage
Communication with the host device is based on
standard UART protocol to send and receive data,
• Supports 6-Bit Accessory ID to Differentiate up to
and it relies on the same microphone line used by the
63 Different Accessory Types
accessory. This special technique enables the
• Supports 3 Remote Control Bottoms
customer to establish the proprietary headset
• Baud Rate Supports 38.4K
solution; thus, differentiating itself from the rest of the
• Backward Compatible for Microphone and market.
Play or Pause Key Functions
The TS2A116E device is pre-programmed with an
• Current Consumption <80 µA During Single-Wire
accessory IDs (AID); combined with the special
Transmission and Idle
communication single-wire protocol, this device
allows the phone to uniquely detect the accessory.
• 12-Pin Ultra Thin UQFN Package
The TS2A116E device also supports up to 3 remote
(2.0 × 1.7 mm, 0.4 mm pitch)
control keys and utilizes similar single-wire
• ESD Performance:
communication to the host chip for any key press
– 2 kV Human Body Model (A114B, Class II)
information. It is also backward compatible to support
the traditional microphone play and pause key
– 500 V Charged Device Model (C101)
functions that do not employ the single-wire
– ±8-kV Contact Discharge for DATA and KEY1,
communication scheme.
KEY2, and KEY3 Pins (IEC 61000-4-2)
The TS2A116E device is designed to operate from an
external self-charged capacitor which replenishes its
2 Applications
charge from the microphone bias voltage. No external
Headset Accessory with Remote Control Buttons
power supply is required. The TS2A116E device is
configured to operate using standard 38.4 kbps baud
rate UART protocol. It consumes maximum operating
current of <80 µA during single-wire transmission or
during the idle state to minimize power consumption.
The device is designed with an ultra thin
2.0 x 1.7 mm UQFN package.
Device Information
(1)
PART NUMBER PACKAGE BODY SIZE (NOM)
TS2A116E UQFN (12) 2.00 mm × 1.70 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Application Diagram
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCT PREVIEW Information. Product in design phase of
development. Subject to change or discontinuance without notice.
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