Where can I find more information on this mysterious IC? (V100 ZJ51VMP)
This is a V100 chip from chinese IC company Actions Semiconductor.

The chip function is described in this press release:


  The V100 is a versatile, all-in-one solution tailored for 3D movie
  watching applications. The V100 integrates a MIPS32 processor together
  with a compact integrated video engine, display subsystem and audio
  engine to deliver an immersive 3D video experience. It supports up to
  1280x800@60fps LCD display and all standard video decoding playback
  capabilities which includes H.264 FHD 1080P@30fps video decoder. The
  V100 features DDR2/DDR1 DRAM, SPI NOR, NAND Flash Controller with max
  40-bit ECC, integrated RGB and LVDS LCD interface, built-in stereo
  20-bit DAC and 20mW power amplifier for headphones. The V100 offers
  rich interfaces such as USB 2.0, SDIO and integrates several
  regulators to maximize power efficiency and reduce residual heat.