- Intel 8051 MCU
- 256 byte IDATA
- runs at 60 MHz??
- at least 48k of the SRAM (not counting 8051's DATA/IDATA)
- USB 2.0 High-speed device
- (probably) 4 endpoints (ep0: control, ep1: bulk in, ep2: bulk out, ?? ep3: interrupt ??)
- NAND flash interface
- 8-bit bus width
- 2 chip selects
- DQS signal
- some randomizer/ecc stuff
- DMA (of course)
- Psychson - a custom firmware for PS2251-03 (very different from PS2251-68!)
- Some "Phisonresearch" forum - seems to be dead, but anyway