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Some details about the ADSP-21489 peripherals

Question asked by Guillaume on Mar 12, 2012
Latest reply on Mar 19, 2012 by Mitesh

Hello I am working on  ADSP-21489 EZ-board. I utilize 16-ch PWM for servo ctrl (16pins) , one SPI master working with 4 external slaves (clk, miso,mosi, 4 flags ==>7pins)), another SPIB for load SPI flash (3 pins ) and the UART for GPS com (2 pins). My questions are,

1.  Can ADSP-21489 supply with enough pins for above-mentioned periphrals?
     Except or 14 pins of DPI, can we multiplex all other signals to external port?


2. The PWM module has four groups of four PWM outputs each, for a total of 16 PWM outputs.  Can we config the 16-ch PWM to be independent?

3. Using the EZ board,  I practiced to burn my software in SPI flash and run the code without any trouble. I will build my own PCB board and only use the on chip SRAM (5Mb). If I select a 32Mb SPI flash (ROM) with the same brand of that of EZ-board, I would like to know whether I can reuse the loader file.


Thanks in advance