Texas Instruments TIC12400 User Manual

User's Guide

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TIC12400 Evaluation Module

This user's guide describes the characteristics, operation, and use of the TIC12400 Evaluation Module (EVM).

Contents

1 Introduction ................................................................................................................... 2

2 Hardware...................................................................................................................... 4

3 SWITCH BOARD Hardware Description ................................................................................. 8

4 GUI Software Installation.................................................................................................. 11

5 TIC12400 GUI Application ................................................................................................ 14

6 Board Files .................................................................................................................. 39

List of Figures

1 TIC12400 EVM Block Level Diagram..................................................................................... 2

2 TIC12400 EVM, SWITCH BOARD, and USB to USB-Mini Cable..................................................... 4

3 EVM, SWITCH BOARD, USB Cable, PC, and Power Supply Setup................................................. 4

4 EVM Hardware Top Description ........................................................................................... 5

5 EVM Hardware Bottom Description ...................................................................................... 6

6 Setup_TIC12400-0.4.0_EVM.exe........................................................................................ 11

7 Installation Steps 1–6...................................................................................................... 12

8 Figure 3. Installation Steps 7–13......................................................................................... 13

9 Double Click on “App Center EVM GUI” Shortcut to Open........................................................... 14

10 GUI Home Page............................................................................................................ 14

11 Device Configuration Page ............................................................................................... 17

12 Channel Configuration Page.............................................................................................. 21

13 Page Connections.......................................................................................................... 39

14 Main Device................................................................................................................. 40

15 USB interface ............................................................................................................... 41

16 <Caption> ................................................................................................................... 41

17 Input filters – IN10-IN23 use 10 Ω instead of 220 Ω................................................................... 41

18 SWITCH Board Schematic................................................................................................ 42

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TIC12400 Evaluation Module

External Micro

Connector

MSP430

(U1)

3.3-V

Regulator

(U4)

Connector

Channel

0í23

Battery or Power

Supply

5-V

Regulator

(U9)

Input Filter

Channel IN0 to IN

Test Point Test Point

DNP

TXB0106

(U10)

TIC12400

(U11)

. . .

SPI

INT

RST

USB

Connector

x24

ONBOARD EVM MONITORS:

x VDD Current Monitor (INA226A, U12) x VS Current Monitor (INA226A, U13) x Ambient Air Temp Monitor (TMP102AQ, U5) x Case Temp Monitor (TMP102AQ, U2)

I2C

SPI

INT

RST

SPI

INT

RST

Introduction

1 Introduction

The TIC12400 is a multiple switch detection interface that is designed to detect the opening and closing of up to 24 switch contacts. 10 out of the 24 inputs are configurable to detect switch states that are either battery connected switches (BCS) or ground connected switches (GCS), which means it can either sink or source current from the channel. The remaining 14 channels are design to support ground connected switches only (source current). The wetting current can be preprogrammed to six available values, which accommodates for different application scenarios. Communication to and from the device is done using a 24-bit SPI protocol.

The TIC124000 and TIC12400-Q1 provide the same functionality and the TIC12400 Evaluation Module is used for both devices.

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Figure 1. TIC12400 EVM Block Level Diagram

The TIC12400 EVM is an evaluation module for the Texas Instruments TIC12400 and it provides basic functionality evaluation for the device. When used together with the switch board, the EVM allows testing of its functionality via SPI communication established to the PC using the USB adaptor.

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Caution Hot surface.

Contact may cause burns.

Do not touch.

The DUT of the board can get hot when all channels are enabled at

the highest wetting current settings in continuous mode

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1.1 Warnings

Introduction

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TIC12400 Evaluation Module

+12.0 V

Power

Supply

EVMSWITCH BOARD

USB

Hardware

2 Hardware

2.1 Kit

Two boards, EVM (TIC12400EVM) and SWITCH BOARD (TIC12400_SWB), are provided with an USB to USB-MINI cable within the KIT; see Figure 2.

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Figure 2. TIC12400 EVM, SWITCH BOARD, and USB to USB-Mini Cable

2.2 Connection to the PC and Powering up the EVM

A mini-USB cable is used to connect the EVM board to the PC. The VDD of the EVM is powered by the USB’s VBUS. The positive terminal of the Power Supply is connected to the “VBAT” terminal of both the EVM and SWITCH BOARD. The negative terminal of the power supply is connected to the “GND” terminal of the EVM. Turn ON the power supply and set it to a nominal supply of +12 V, see Figure 3.

Figure 3. EVM, SWITCH BOARD, USB Cable, PC, and Power Supply Setup

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Optional Circuitry or Functions

Required Circuitry

10 11

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2.3 EVM Hardware Description

The TIC12400 EVM is designed to allow the user to easily evaluate switch detection using the GUI. The break down of all the features and design of the EVM follow.

Hardware

1. Connect the TIC12400EVM to a supply using VBAT (J9) as the positive terminal of the supply and GND (J10) to the negative terminal of the supply using standard banana cables. The supply can range from 4.5V to 35V, but is nominally at 12V.

2. Connect the TIC12400EVM to your computer via the mini-USB cable provided. The actual connector is located on the bottom side of the board. This will allow your computer to interface with the EVM and communicate to the device.

3. Connect the Switch Board or your own switches via a mating connector to J2, which connects the switches to the INx pins of the device.

4. U11 is the TIC12400 devices.

5. The EVM has several LED use to help the user indicate the status of the EVM

6. The device has three post regulator decoupling caps: V at each output capacitor for each of these three regulators.

7. The EVM facilitates the use of an external microcontroller by interfacing with SPI, INT, and RESET pins of the device.

8. There is an optional Translator/Level shifter (TXB0106) on the EVM to ensure the ability to interface with the device's SPI, INT, and RESET functions at various voltages set by VDD pin. The MSP430 is a

3.3-V device and does not support 5-V logic level without the TXB0106.

9. The EVM has the ability to do relative temperature measurements of the air using the TI TMP0104AQ

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Figure 4. EVM Hardware Top Description

, V

CAP_D

CAP_PRE

, and V

TIC12400 Evaluation Module

. There are test points

CAP_A

1,6,7,11,12

CONNECTOR

Hardware

10. There are place holders for a filter components on each channel of the EVM. There is a 100mil header

11. The filter capacitors at the pins of the device are not loaded by default and are there to allow the

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device.

along the edge of the connector to measure signal at connector, and SMT test points to measure the signal at the IC.

design of filters if needed.

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Figure 5. EVM Hardware Bottom Description

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1. The EVM has a blocking diode and large bulk capacitor. The blocking diode (D3) protects the EVM in

2. The EVM has the ability to do relative temperature measurements of the device's case temperature

3. The MSP430's support devices, such as JTAG interface, crystal, programming button, and so forth.

4. The MSP430 bridges the communication from the computer’s USB cable to the device's SPI, INT, and

5. The TPS73533 receives power from the VBUS of the USB, which is 5 V. It then regulates that to the

6. There are two INA226A Current Monitors for measuring current in VDD (U12) and for measuring th

7. There are four status LED on the EVM that take up power when in use. The header (J4) facilitates

8. The TPS7A6650Q is a high voltage regulator that is able to take high voltage and regulate it down to

Hardware

case the terminals of the battery are switched accidentally. The bulk capacitor (C24) adds a delay between a battery disconnect and the device shutting down.

a. 2.1 There EVM has several jumpers for configuring the EVM in a variety of ways. J1: This jumper

connects the input of the 5V regulator to VS if inserted. (Default: Not Loaded)

b. 2.6 J6: This jumper connects a GPIO from the EVM micro (MSP430) to the output enable (OE) of

the TXB0106 level shifter by placing the jumper between pins 1 and 2. Placing the jumper between pins 2 and 3 forces the translator to be on. If there is no jump on J7 then the pull down resistor turns it off (OE=LOW) and places the level shifter in high impedance mode, preventing bus contention between two possible masters on the SPI bus.

c. 2.7 J7: This jumper connects VDD pin of the device to either the onboard +3.3V supply generated

from the USB bus or connects to the onboard +5V regulator that is supplied from the battery. Connecting pin 1 and 2 with a jumper connects VDD to +3.3V and connecting 2 and 3 with a jumper connects VDD to +5V (this assumes J1 is also loaded). (Default: jumper across pin 1 and

d. 2.11 J11: This jumper connects VS pin of the device to the bulk capacitor after the protection

diode.

e. 2.12 J12: This jumper gives the option of having the pull up resistor come from either VDD or VS.

Connecting pin 1 and 2 with a jumper, references the INT pin to VS. Connecting pin 2 and 3 with a jumper references the INT pin to VDD.

using TI’s TMP0104AQ device.

RESET lines. The MSP430 also interfaces with several supports circuits for measuring temperature for air and case, measuring current to VDD, and measuring current to VS. The MSP430 also has the ability to control OE pin of TXB0106 to facilitate control of the device by an external microcontroller.

+3.3V output on the TIC12400 EVM.

current going into VS (U13). The MSP430 interfaces with these devices using I2C and relays the information through the UBS cable to the GUI on the computer.

removing the LED’s in the circuit to do system level power measurements accurately.

5V for use with higher voltage micro controllers. When J1 is removed the regulator’s input voltage is removed and therefore it is disabled.

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TIC12400 Evaluation Module

23-1 23-2 23-3 23-4 23-5

SW23_A

SW23_B

IN23

5 4

SWITCH BOARD Hardware Description

3 SWITCH BOARD Hardware Description

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1. The SWITCH BOARD (SWB) is designed such that ground offsets can be tested by removing J6, which disconnects the Chassis Ground (CGND) from the EVM ground (GND). A supply can be placed between GND and CGND to create the offset. If not testing this feature, then J6 is by default in place and therefore CGND and GND are shorted together.

2. VBAT provides the power to the battery connected switches. Switch 0 to 9 are battery connected switches.

3. J114 connects all the switches from the SWB to the inputs of the EVM.

4. J1, J2, and J3 are jumpers that connect SW0 to SW23 to IN0 to IN23 of the EVM. These jumpers allow the user to disconnect the SW’s on the Switch Board to the EVM and provide a 0.1" head to connect their own switch of their choosing to the EVM.

5. SW23A and SW23B are provided to test the device's ability to detect multi-resistor coded ground referenced switch transitions. SW23A relate directly to the mapped thresholds for 3A, 3B, and 3C. SW23B relate directly to thresholds 8 and 9 of the device. Switch 23-1-5 are designed to coincide with one state for each instance of one switch being in the “CLOSED” position. Channel 23 of the device has the ability to set up to 5 thresholds, which means there are 6 states. Each switch represents one state and all switches in the “OPEN” position represents the 6th state.

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X-2

OPEN

X-1

X-2

OPEN

X-1

X-2

OPEN

X-1

X-1 X-2

SWX

INX

OPEN

X-2

OPEN

X-1

X-2

OPEN

X-1

X-2

OPEN

X-1

X-1 X-2

SWX

INX

OPEN

X-1 X-2 X-3

SWX

IN_X

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6. SW18 – SW22 are used to test up to 4 state resistor coded ground referenced switches. Each of the

7. SW12 – SW17 are used when up to two thresholds (three states) is needed for the switch application.

SWITCH BOARD Hardware Description

channels have three ground connected switches labeled X-1, X-2, and X-3, which coincides with a mapped threshold for 3A, 3B, and 3C. Each individual switch represents one of the three states and the fourth state is when all switches are “OPEN”.

Each of the channels have two ground connected switches labeled X-1 and X-2, which coincides with a mapped threshold for 2A and 2B, and a switch position called “OPEN” to represent the third state.

8. SW10 and SW11 are used when up to two thresholds (three states) is needed for the switch application. Each channel from 0 to 11, has one unique threshold mapping for each channel and one common threshold (THRES_COM) that is shared for all the channels (0-11). These switches are setup to illustrate this feature.

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X-1

OPEN

X-2

OPENOPEN

SWX

X-1

X-2

OPEN

VBAT

IN_X

X-1

X-2

X-1

X-2

SWITCH BOARD Hardware Description

9. SW0 to SW9 are designed to test the device ability to detect digital switches that are either referenced to a battery connected switch or ground connected switch. There are two state, “OPEN” and either chassis Ground Connected Switch (GCS) or Battery Connected Switch (BCS).

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4 GUI Software Installation

The GUI software is required to establish the communication between the EVM boards and the PC and it also provides the GUI interface to read/write registers information on device. The following section described the software installation procedure.

Step 1. Download the GUI software The software can be downloaded on TI server at link goes here. Please inquiry with a TI representative

if you don’t have access to the files. Step 2. Software installation Go to location that the executable was downloaded to and either double-click the Setup_TIC12400-

0.4.0_EVM.exe file to begin software installation or right click and select “Run as administrator”. The software will install two applications, “App Center” software and the TIC12400 GUI App software. If the “App Center” software isn’t already installed on the PC then additional steps will be needed. Those steps are outlines in the following figures.

GUI Software Installation

Follow the on-screen instructions to complete the setup. The process may take up to 10 minutes depending on your computer speed.

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Figure 6. Setup_TIC12400-0.4.0_EVM.exe

TIC12400 Evaluation Module

This screen should show up shortly after step

5. This screen should appear on top, unless the user clicks on another item. Sometimes the screen may appear to be behind the other setup screen. The TIC12400 EVM GUI will not install until the App Center software is first installed.

GUI Software Installation

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TIC12400 Evaluation Module

Figure 7. Installation Steps 1–6

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GUI Software Installation

The EVM GUI can either be opened before or after the EVM is setup and power is applied.

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Figure 8. Figure 3. Installation Steps 7–13

TIC12400 Evaluation Module

3 4 5 6

TIC12400 GUI Application

5 TIC12400 GUI Application

5.1 Starting the GUI

After the EVM and SWITCH BOARD are connected and then the cables are connected the Power Supply and PC via USB cable, the GUI can be run by double clicking the shortcut icon on the desktop, see

Figure 9.

Figure 9. Double Click on “App Center EVM GUI” Shortcut to Open

5.2 TIC12400 Info Page

The “Info” page (Home) of the TIC12400 GUI has a short summary of the features of the TIC12400. See the following map of features of the “Info” page in Figure 10.

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TIC12400 Evaluation Module

Figure 10. GUI Home Page

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TIC12400 GUI Application

The Menu bar has several sub menus that are within “File”, “Tools” and “Help” drop down menus. “File” drop down menu provides access to “Saving Registers”, “Save Registers As”, and “Load

Registers”. This means switch profiles can be saved and loaded as needed.

“Tools” drop down menu provides access to the Logging feature of the GUI. This records both SPI Reads and Writes.

“Help” drop down menu provides access to information pertaining to GUI version and MSP430 firmware revision.

The Menu bar can be clicked to show the minimized and maximized menu, default is minimized. The buttons on the bar are from top to bottom as follows:

• Intro (Home): Brings the user back to the Intro screen

• Channel Configuration: Page to configure the channels of the device in a graphical format

• Configuration Wizard: Guided setup of MSDI based on system level requirements

• Device Settings: Access device settings without manually

adjusting the register settings

• Real Time Status Tracker: Live visual monitoring of channel inputs

• Matrix Configuration: Graphical configuration of the Matrix mode settings

• Polling mode current calculator: Page to calculate the current consumption of the devicewhile in polling mode with multiple settings, and Register Map. These are also available buttons on the right of the “Intro” page.

• Registers: Register access page

Quick Start. Opens up a sub menu with two options.

1. A configuration wizard that walks through the system level use case to setup the device

2. Load default configuration for the device

The settings button will open a sub menu for Channel Configurations, Device Settings and Matrix

configuration. These are the same pages accessed by the men bar on the left side of the GUI.

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TIC12400 GUI Application

The tools button will open a sub menu to access the Polling Mode current Calculator and Real-

Time Status Tracker pages.

6. Clicking on the register map button will direct the user to the Register map page via a sub menu. Reference materials button that pulls up links to the EVM User’s Guide, Datasheet and a

reference video. Benefits banner. Clicking on the links in this section will show greater details on the device

benefits and how they differ from today’s implementations. The button toggles ON/OFF the Log page, which is also seen in the Tools->Log pane.

If the EVM is connected to the PC with the USB cable then the GUI will show that it is connected by showing a green dot. If there is no communication with either the on board micro controller (MSP430) or the device then the following image will be seen, indicated no communication.

10.

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+ 36 hidden pages

Texas Instruments TIC12400 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual