STI5107 STMicroelectronics, STI5107 Datasheet - Page 8

• Manufacturer Part Number: STI5107
• Description: Low-cost Interactive Set-top Box Decoder
• Manufacturer: STMicroelectronics

Architecture features
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Programmable transport interface (PTI)
The PTI hardware performs the following functions:
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MPEG graphics and display processing
The MPEG graphics and display architecture shown in
video-stream processing and display capabilities of the STi5107.
Figure 6.
Video decode and display
The video decoder is based on the Omega2 cell and provides a memory to memory decode
into YC 4:2:0 macroblock format, it is able to provide simple resizing based on x2 and x0.5.
The GDMA retrieves the final composition from main memory and transfers it to the DENC,
which in turn drives the output video DAC.
descrambling, demultiplexing and data filtering,
PES data is transferred by DMA to audio and video decoders via circular buffers,
section data is transferred by DMA to separate buffers for further processing by the
CPU,
DVB transport streams with data rates up to 100 Mbit/s,
PID filtering to select the audio, video and data packets to be processed,
can support 48 PID slots.
descramble streams using the following ciphers:
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has a section filter core that filters DVB standard sections using 96x 8-byte or 48x 16-
byte filters.
DVB-CSA,
NDS specific streams that are supported by the integrated ICAM functionality.
Graphics and display subsystem
SDRAM
LMI
16
Omega2 interconnect
Omega2
decoder
video
Blitter
GDMA
DENC
Figure 6
provides the graphics,
VDAC
Analog video
out
Digital video
STi5107