Texas Instruments BoosterPack C5545, Hardware User'S Manual, Page: 15 / 43

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Introduction to C5545 BoosterPack Board
15 SPRUI90 – September 2016
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TMS320C5545 BoosterPack Hardware
2.4 SPI FLASH Interface
The C5545 BoosterPack includes a 2MB Serial Flash (MX25R1635FM1IL0 from Macronix) which is
interfaced to the C5545 DSP as shown in
Figure 7 . The SPI port of the DSP is shared with the SPI Flash
and the CC2650, which is selected through chip select 0 and 2, respectively.
The Hold signal (to pause the serial communication without deselecting the device) is disabled with a pull-
up resistor. Pull up/pull down options are provided for the write protect signal, which is disabled in the
default configuration.
Figure 7. SPI FLASH Interface