Artesyn COMX-P2020 Installation and Use (July 2014) - Manual (Page 77)

Functional Description
COMX-P2020 COM Express Module Installation and Use (6806800K97D) 77
The integrated L2 Cache/SRAM can be configured as Cache or SRAM. For COMX-P2020, it is
configured as 512 KB L2 cache that is organized as 2048 eight way sets of 32 byte cache lines
based on 36 bit physical addresses.
4.3 Memory
The U-boot will configure the memory controller with the fixed parameter instead of SPD
information on the SOUDIMM.
4.3.1 SDRAM
COMX-P2020 COM Express Module only supports 2 GB DDR3 667 MT/s DDR3+ECC arranged in
two ranks in one slot.
Figure 4-2 P2020 Processor Block Diagram