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Hardware Configuration

7

SPRUI77C – August 2016 – Revised March 2019

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LAUNCHXL-F28379D Overview

5.3

Boot Mode Selection

The LaunchPad's F28379D device includes a boot ROM that performs some basic start-up checks and

allows for the device to boot in many different ways. Most users will either want to perform an emulation

boot or a boot to flash (if they are running the application standalone). Switch S1 has been provided to

allow users to easily configure the pins that the bootROM checks to make this decision. The positions on

S1 correspond to those shown in Table 3.

Table 3. Positions of Signals Present on Switch S1

Positions

Function

1

GPIO84

2

GPIO72

3

TRSTn

Keep in mind that the debug probe does not connect if the device is not in the emulation boot mode

(TRST switch in the UP-1 position). More information about boot mode selection can be found in the Boot

ROM section of the TMS320F2837xD Dual-Core Delfino Microcontrollers Technical Reference Manual.

5.4

Connecting a BoosterPack

The F2837xD LaunchPad is the perfect experimenter board to start hardware development with the

F2837xD devices. All of the connectors are aligned in a 0.1-in (2.54-mm) grid to allow easy and

inexpensive development of add on boards called BoosterPacks. These satellite boards can access all of

the GPIO and analog signals. The pinout of the connectors can be found in Section 5.

5.5

GPIO Routing Between BoosterPack and I/O Expansion Headers

This LaunchPad has a high-density connector (J9) on the backside of the board. This connector provides

for an IO expansion board to be connected. Many of the EMIF1 signals are available as well as SPI and

I2C. Some of the signals present on J9 are also available on the BoosterPack expansion headers.

On Revision 1.x LaunchPads, only two signals were dual-mapped to both J9 and the BoosterPack

Headers, GPIO40 and GPIO41. To select the destination, the three-position jumpers, J11 and J13, could

be adjusted accordingly. Placing the jumper between position 1 and position 2 will route the signal to J9.

Placing the jumper between position 2 and position 3 will route the signal to the BoosterPack headers.

On revision 2.0 LaunchPads, in addition to GPIO40 and GPIO41, four more signals may be routed to

either the BoosterPack headers or J9 independently, or may be connected to both based on the

placement of 0Ω resistors. By default, the signals are only routed to the BoosterPack headers for

alignment with the BoosterPack standards. Table 4 provides the mapping for each signal and which

resistors populate in order to route the signal as desired. Refer to the schematic at the end of this

document in Section 6.2,or located in the C2000Ware directory.

Table 4. Revision 2.0: Resistor Selection for Routing Dual-Mapped Signals

GPIO

Route to BoosterPack Headers

Route to J9 Header

GPIO29

R75

R76

GPIO40

R67

R68

GPIO41

R69

R70

GPIO52

R77

R78

GPIO104

R71

R72

GPIO105

R73

R74