Versal Adaptive SoC Technical Reference Manual (AM011)

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1.6 English

The OSPI controller uses slightly different nomenclature for some terms as noted in the following table.

Table 1. OSPI Nomenclature
Functionality Common Nomenclature OSPI Chapter Nomenclature
Processor addressable flash memory Linear access mode Direct mode
Data clocking on positive and negative clock edges Double data rate (DDR)

Double data rate (DDR)
Dual transfer rate (DTR) 1

  1. Both the DDR and DTR terms are used in the OSPI chapter. The DTR term is used when referring to the Micron flash memory devices.