Introduction to C5545 BoosterPack Board
18
SPRUI90 – September 2016
Copyright © 2016, Texas Instruments Incorporated
TMS320C5545 BoosterPack Hardware
2.7
Micro SD CARD Interface
A micro SD card connector is connected to the SD0 interface of the C5545 DSP as shown in
.
Level translators are used between the micro SD card connector and C5545 because the IO voltage of the
micro SD card is 3.3 V while the C5545 DSP IO voltage is 1.8 V. The TXS0108EPWR level translator
contains ESD protection diodes and integrated pull ups for the data and command signals.
The card detect pin from the micro SD card connector is connected to the C5545 DSP GPIO29 to detect
the presence of a micro SD card.
Figure 10. Micro SD Card Interface
To configure the GPIO for micro SD card detect, see
for the micro SD card connection
details and a GPIO mapping table.
2.8
OLED Display Interface
The OLED “OSD9616P0992-10” from OSD Displays is used on the C5545 Booster Pack as a display
device. The OLED display is controlled by C5545 through the I2C interface. It supports an internal
regulator to generate the backlight supply. For OLED reset details, see
Figure 11. OLED Display Interface