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IWR6843: Actual size of L3 memory

Part Number: IWR6843


I'm trying to understand the size of the L3 memory on the DSS:

http://www.ti.com/lit/ug/swru522c/swru522c.pdf , page 184 lists the L3 size as 768 KB

http://www.ti.com/lit/an/swra621/swra621.pdf , page 4 lists the L3 size as 1024 KB

Which one is correct? I want to be able to store a (256 range x 256 Doppler x 4 channel x 4 byte (16-bit I, 16-bit Q) = 1024 KB) RDM in L3. Is it possible?