Samsung DVD-R129, Service Manual, Page: 120 / 208

Circuit Operating Descriptions
13-6 Samsung Electronics
4) Interrupt controller
· 32 interrupt sources (watch dog timer, 4 timers, UARTs, 8 external interrupts, IIC, IIS, SPI, IR, etc.)
· Edge detect mode on external interrupt source
· Programmable polarity of rising and falling
· Supports FIQ (fast interrupt request) for very urgent interrupt request.
5) Video pre-processor
· Noise reduction by motion-compensated temporal filtering
· Bitmap generation for motion estimation of MPEG encoder
· Scene change detection.
6) MPEG video encoder
· Encodes MPEG1 & MPEG2 video stream (MP@ML)
· Efficient motion estimation by hierarchical motion vector search and binary image matching.
7) MPEG video decoder
· Decodes MPEG1 & MPEG2 video stream (MP@ML)
· Error detection and autonomous error concealment.
8) Audio DSP
· Decodes Dolby AC-3, MPEG1, MPEG2, DTS, MLP, HDCD, AAC and WMA
· Supports down mix
· MAC2424 for audio signal processing
– 24-bit high performance fixed-point DSP coprocessor, 24x24 MAC operation in 1 cycle.
– 2 multiplier accumulator registers, 4 general accumulator registers, and 8 pointer registers.