Hardware Overview
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Table 1. Hardware Components
Component
Description
+5V Power In
DC power supply from plug pack (5-V supply may be used as well)
Main Pwr
SW1 - Master power switch for entire EVM
Emulator Power Jumper
Sets the voltage sent to power the emulator. No jumper means no power will be sent to an emulator, a
jumper at “5V” will power the emulator with 5 V, and a jumper at “3V3” will power the emulator with 3.3
V.
JTAG
Connector for external JTAG emulator
CAN
External pins available for connection to two parallel CAN devices
EEPROM
256K SPI-based EEPROM
Hex Encoder
4-bit hex encoder which sets the values of GPIOs 12-15
SCI Boot Pins
Controls how the controlCARD boots
If no jumpers are placed the target boots from flash
If a jumper is placed at “34”, a F2808 controlCARD boots from SCI
If a jumper is placed at “84”, a F28335 controlCARD boots from SCI
Potentiometers
Divide a 3.3-V input into a voltage value to be read by ADC-A0 and ADC-A1
LEDs
LED1 and LED2 controlled by GPIO-09 and GPIO-11
Comms
Serial communications UART (connects to the Quick Start GUI)
IR Receiver
Uses the eCAP module to read signals sent by a IR transmitter. The software included with this kit is
configured to work with the Sharp TV protocol, for the included Philips universal remote this is code
0509.
Headphone-Out
Output from the TI AIC23B codec that is controlled by the F28x MCU (headphones not included in this
package)
Audio-In
Input to the TI AIC23B codec (line-in audio cable not included in this package)
ADC pins
Spare ADC pins available to be connected as desired
DAC output
Output of a filtered ePWM. The ePWM output is connected to a second-order passive filter then
connected to these pins
EPWM to ECAP
Connecting a jumper across these headers allows for an experiment to be done where the eCAP
loopback enable
module reads the duty cycle and period of the ePWM output
Peripheral Explorer Kit Overview
4
SPRUGM2 – January 2009
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