Samsung BD-P1000 Service Manual page 129

3) Video Processing
As a highly integrated network media processor engine, the DMN-8602 device implements motion-com
pensated, block-DCT-based video compression algorithms. To this end, the DMN-8602 device includes a
Video DSP and Motion Estimation coprocessor that off-load computeintensive tasks from the SPARC
processors.
4) Audio Processing
The audio processing hardware is physically integrated into the System SPARC processor. The hardware
consists of two parallel, 63-bit Multiplier/Accumulator (MAC) units with 32-bit precision for samples of high
quality and a DSP instruction set to support efficient encoding and decoding of a wide variety of audio
algorithms.
These include MPEG-1 Layer 2, MP3, AC-3, AAC, etc., as well as audio special effects such as 3D audio,
Dolby ProLogicTM, echo, harmonizing, bass management, FIR filters, and IIR filters.
Each SPARC processor can execute two instructions in parallel:
a MAC operation (DSP instruction) and a regular SPARC processor instruction.
In other words, there can be an overlap between the load-and-store operations and the multiply-and-accumu
late operations.
5) Host Interface
The generic host interface provides a simple, efficient, low-cost interface to a 16-bit or 32-bit host micro-con
troller interface bus.
The host interface provides three distinct functions:
◆ Local SDRAM access
◆ Internal register access
◆ Compressed data input /output (if the dedicated bit-stream interfaces are not used for this purpose)
The host communication functions include initializing the DMN-8602 device, downloading software to
the local SDRAM, sending commands, monitoring status, and downloading graphics data such as OSD
bitmaps.
The host interface supports two types of read/write protocols:
◆ Individual (I) mode
◆ Multiplexed (M) mode
In I mode, the decoder requires the host to drive separate signals (RD and WR) to indicate whether a
transfer is a read or a write. In M mode, the decoder requires one direction signal (RD or WR) and a
data strobe.
This selection allows the DMN-8602 Dual Stream NMP to operate with most popular micro-controllers.
6) Bitstream/Storage Interface
The primary BIO port consists of three component modules that operate independently
◆ ATAPI Controller
◆ 1394 Controller
7) Video Interface
The video interface is a programmable high-speed I/O port that supports the transfer of uncompressed
digital video into and out of the DMN-8602device. One video input channel and one video output channel
are provided.
8) Audio Interface
The DMN-8602 device has a single serial audio input port capable of four channels of audio input for recording
of two stereo sources, and four serial audio output ports capable of eight channels of audio output for up to
eight-channel surround sound reproduction.
Samsung Electronics
Circuit Operating Descriptions
13-9