File:Allwinner R16 User Manual V1.2.pdf (PDF, 529 pages, ).A33 User Manual v1.1 (PDF, 574 pages, ).A33 User Manual v1.0 (PDF, 580 pages, ).X-Powers AXP223, designed for the A23, connected via Allwinner's Reduced Serial Bus (RSB).

256 KB (Instruction) / 32 KiB (Data) L1-Cache per core.512 KB L2-Cache (shared between four cores).Support in mainline u-boot and in the mainline kernel is work in progress. There is no support for the A33 in the linux-sunxi 3.4 kernel and in u-boot-sunxi.