技术特性

• Enhanced ST20 32-bit VL-RISC CPU
  • 200 MHz, single cycle cache, 4 Kbyte instruction cache, 4 Kbyte data cache, 2 Kbyte SRAM
• Unified memory interface
  • Up to166 MHz, 16-bit wide SDRAM interface
• Programmable flash memory interface
  • SRAM, peripheral, Flash, SFlash™ support
  • support for low cost DVB-CI and ATAPI
• Programmable transport interface (PTI)
  • single transport stream input
  • support for DVB transport streams
• MPEG-2 MP@ML video decoder
  • fully programmable horizontal and vertical SRCs
• Graphics/display
  • advanced blitter base compositor
  • 8 bpp CLUT graphics, 256 x 30 bits (AYCbCr) CLUT entries
  • 16 bpp true color graphics, RGB565, ARGB1555, ARGB4444 formats, with linklist control
  • Alpha blending, antialiasing, antiflutter, antiflicker filters
  • 2D paced blitter engine with fill function
• PAL/NTSC/SECAM encoder
  • RGB, CVBS, Y/C and YUV outputs with four 10-bit DAC outputs. RGB/CVBS or YUV/CVBS or YC/CVBS
  • Encoding of CGMS, Teletext, WSS, VPS, close caption.
• Audio subsystem
  • MPEG-1 layers I/II
  • simultaneous MPEG audio decode and output of Dolby® streams on S/PDIF
  • IEC958/IEC1937 digital audio output interface
  • integrated stereo audio DAC system
• Central DMA controller
• On-chip peripherals
  • two ASCs (UARTs) with Tx and Rx FIFOs
  • three 8-bit banks of parallel I/O and one 7-bit bank
  • two SSCs for I²C/SPI master/slave interfaces
  • infrared transmitter/receiver
  • integrated VCXO

功能框图