Allwinner A20 - Transport Stream; Overview

To Next Page

To Previous Page

6.13. Transport Stream

6.13.1. Overview

The transport stream controller is responsible for de-multiplexing and pre-processing the inputting

multimedia data defined in ISO/IEC 13818-1.

The transport stream controller receives multimedia data stream from SSI (Synchronous Serial Port)/SPI

(Synchronous Parallel Port) inputs and de-multiplexing the data into Packets by PID (Packet Identify).

Before the Packet is stored to memory by DMA, it can be pre-processed by the Transport Stream

Descrambler.

The transport stream controller can be used for almost all multimedia application cases, for example: DVB

Set top Box, IPTV, Streaming-media Box, multi-media players and so on.

It features:

 Support industry-standard AMBA Host Bus (AHB) and it is fully compliant with the AMBA

Specification, Revision 2.0. Supports 32-bit Little Endian bus.

 Support AHB 32-bit bus width

 One external SPI or SSI

 32 channels PID filter

 Support multiple transport stream packet (188, 192, 204) formats

 Configurable SPI and SSI timing parameters

 Hardware packet synchronous byte error detection

 Hardware PCR packet detection

 Configurable SPI transport stream generator for streams in DRAM memory

 Support DMA for data transfer

 Support interrupt

 Support DVB-CSA V1.1 descrambler