Detailed description

Detailed description of the HIL TI Launchpad Interface

The board features the following key sections, as shown in Figure 1.

  1. HIL Analog connector
  2. HIL Digital connector
  3. Measurement terminals
  4. Encoder Connectors
  5. PSU selector switches
  6. LaunchPad™ connector group
  7. Monitoring BNC connectors
Figure 1. HIL TI Launchpad Interface layout

HIL Analog Connector

This is a 96 pin DIN 41612/IEC receptacle connector that is directly pluggable into the Analog I/O connector, found on all Typhoon HIL hardware emulators. HIL Analog Connector shows how 20 analog signals (16 analog outputs and 4 analog inputs) from Typhoon HIL emulators are connected to the LaunchPad™ headers, for TI's LAUNCHXL-F28379D, LAUNCHXL-F28069M and LAUNCHXL-F28027F.

To protect against overvoltage conditions, HIL Analog Outputs feature series 120Ω RZ1-RZ16 resistors that, together with protection diodes (U2-U5), form a 0-3.3V referenced clamping circuit.

Table 1. Analog signal routing for most commonly used LaunchPad™ boards
HIL Analog Output DSP signal (F28379D) DSP signal (F28069M) DSP signal (F28027F)
AO1 ADCIN-14 ADCINA7 ADCINA7

AO2

ADCIN-C3

 ADCINB1 ADCINA3
AO3 ADCIN-B3 ADCINA2 ADCINA1
AO4 ADCIN-A3 ADCINB2 ADCINA0
AO5 ADCIN-C2 ADCINA0 ADCINB1
AO6 ADCIN-B2 ADCINB0 ADCINB3
AO7 ADCIN-A2 ADCINA1 ADCINB7
AO8/AI1* ADCIN-A0/DAC-A NC NC
AO9 ADCIN–15 ADCINB7 NC
AO10 ADCIN-C5 ADCINB4 NC
AO11 ADCIN–B5 ADCINA5 NC
AO12 ADCIN–A5 ADCINB5 NC
AO13 ADCIN–C4 ADCINA3 NC
AO14 ADCIN–B4 ADCINB3 NC
AO15 ADCIN–A4 ADCINA4 NC
AO16/AI2* ADCIN–A1/DAC-B NC NC
AI3 PWM-DAC1 DAC1 NC
AI4 PWM-DAC2 DAC2 NC
AI5 PWM-DAC3 DAC3 NC
AI6 PWM-DAC4 DAC4 NC

* Depending on the position of RDACA or RDACB jumper resistors, this HIL AO or HIL AI may be routed to the DSP analog pin. By default, HIL AOs are routed to the DSP ADC.

Figure 2. RDACA and RDACB default positions

HIL Digital Connector

This is a 96 pin DIN 41612/IEC receptacle connector that is directly pluggable into the Digital connector of the Typhoon HIL emulators, followed by three rows of measurement terminals. Table 2 shows how 32 digital signals (16 outputs and 16 inputs) from Typhoon HIL emulator are routed to the LaunchPad™ headers, for TI's LAUNCHXL-F28379D, LAUNCHXL-F28069M and LAUNCHXL-F28027F.

A total of 16 HIL digital outputs are level shifted from the HIL’s 5V to DSP’s 3.3V, using an SN74LVCH16T245 level shifter. Level shifter outputs can be enabled/disabled by resistor jumpers ROE1 (lower 8 outputs) and ROE2 (upper 8 outputs), to enable compatibility with more TI LaunchPad™ boards.

Table 2. HIL Digital Output signal routing for most commonly used LaunchPad™ boards
HIL Digital Output signal DSP signal (F28379D) DSP signal (F28069M) DSP signal (F28027F)
DO1 GPIO-61 GPIO19 GPIO19
DO2 GPIO-123 GPIO44 GPIO12
DO3 GPIO-122 NC NC
DO4 GPIO-58 GPIO16 GPIO16/GPIO32
DO5 GPIO-59 GPIO17 GPIO17/GPIO33
DO6 GPIO-124 GPIO50 GPIO6
DO7 GPIO-125 GPIO21 GPIO7
DO8 GPIO-29 GPIO55 ADCINB6
DO9 GPIO-66 GPIO27 NC
DO10 GPIO-131 GPIO26 NC
DO11 GPIO-130 NC NC
DO12 GPIO-63 GPIO24 NC
DO13 GPIO-64 GPIO25 NC
DO14 GPIO-26 GPIO52 NC
DO15 GPIO-27 GPIO53 NC
DO16 GPIO-25 GPIO56 NC
Table 3. HIL Digital Input signal routing for most commonly used LaunchPad™ boards
HIL Digital Input signal DSP signal (F28379D) DSP signal (F28069M) DSP signal (F28027F)
DI1 GPIO-00/PWM-1A GPIO0 GPIO0
DI2 GPIO-01/PWM-1B GPIO1 GPIO1
DI3 GPIO-02/PWM-2A GPIO2 GPIO2
DI4 GPIO-03/PWM-2B GPIO3 GPIO3
DI5 GPIO-04/PWM-3A GPIO4 GPIO4
DI6 GPIO-05/PWM-3B GPIO5 GPIO5
DI7 GPIO-24 GPIO13 GPIO16/GPIO32
DI8 GPIO-16 NC GPIO17/GPIO33
DI9 GPIO-06/PWM-4A GPIO6 NC
DI10 GPIO-07/PWM-4B GPIO7 NC
DI11 GPIO-08/PWM-5A GPIO8 NC
DI12 GPIO-09/PWM-5B GPIO9 NC
DI13 GPIO-10/PWM-6A GPIO10 NC
DI14 GPIO-11/PWM-6B GPIO11 NC
DI15 GPIO-14/PWM-8A NC NC
DI16 GPIO-15/PWM-8B NC NC

Encoder connectors

This section consists of two 5-pin connectors, intended to be used to stimulate two encoder interfaces in the LaunchPad™ board: eQEP1 and eQEP2.

For this section, connection between the LaunchPad™ board and the Launchpad Interface should be made via two 5-pin ribbon cables, provided by Typhoon HIL.

Table 4. Encoder signal routing
HIL Digital Output signal DSP signal
DO17 eQEP1A
DO18 eQEP1B
DO19 eQEP1I
DO20 eQEP2A
DO21 eQEP2B
DO22 eQEP2I

LaunchPad™ connector group

The LaunchPad™ connector group comprises of four 2x10 pin headers for TI LaunchPad™ boards, and a set of four 2x10 pin measurement terminals, with a pinout shown in Figure 3.

Figure 3. LaunchPad™ connector group pinout

Power Supply

By default, all LaunchPad™ boards are powered via USB. With the HIL TI Launchpad Interface, these boards can be powered from HIL instead, thus enabling "standalone" operation.

Proceed with caution. Study the official schematic of the LaunchPad™ board carefully before making any changes. Before powering from HIL, disconnect and/or disable all USB power supplies present on the LaunchPad™ board itself, regardless of the USB cable connection.

Power selection is performed via two switches, labelled as "HIL POWER".

Figure 4. HIL POWER switch section location
Figure 5. HIL POWER switch section schematic

Monitoring BNC and measurement terminals

For easier access to the signals from the HIL setup, a total of 10 BNC, and a total of 192 measurement terminal posts are provided on the HIL TI Launchpad Interface.

“Texas Instruments“, “TI“, and "LaunchPad™" are registered trademarks of Texas Instruments Incorporated in the United States of America, or other countries, or both.