# TMS320AV7110 Integrated Digital Set-top Box Decoder

## Introduction
The TMS320AV7110 is a core component for Digital Video Broadcast (DVB) set-top boxes, integrating an ARM CPU, transport packet parser (TPP) with European Common Descrambler (ECD), MPEG-2 video decoder, MPEG-1 audio decoder, NTSC/PAL encoder, OSD controller, high-speed data interface, UARTs, IR ports, Smart Card interface, and Extension Bus. It supports external memory expansion for a range of set-top box configurations.

## Features
️· Decoding: MPEG-1 & MPEG-2 video, MPEG-1 Layer I/II audio
️· Output: PCM, SPDIF, analog Y/C/RGB, composite video
️· Interfaces: SDRAM controller, Extension Bus, UARTs, IR ports, Smart Card interface, high-speed data interface (IEEE 1394, IEEE 1284, SCSI).
️· Processing: ARM CPU, OSD with transparency, BitBLT hardware acceleration.
️· Other: On-chip ECD, hardware CRC, macrovision anti-taping.

## Architecture
️· Functional Block Diagram: Includes ARM CPU, TPP, Video/Audio Decoders, OSD, and various interfaces.
️· Overview: Processes transport bit-streams to decode video and audio, providing outputs through various interfaces.

## Traffic Controller (TC)
️· Features: Manages SDRAM access, prioritized interrupts, DMA transfers, and video/audio buffer monitoring.
️· SDRAM Interface: Supports access to external SDRAM.

## MPEG Transport Decoder (TPP)
️· Features: Parses transport bit-streams, conditional access/descrambling.
️· Hardware Section Filtering: Filters transport packets based on defined criteria.

## Video Decoder
️· Features: Decodes MPEG-1/2 video streams. Supports trick mode and video scaling.
️· Configuration: Adjustable display format and synchronization modes.

## OSD & Graphics Acceleration
️· Features: On-screen display with blending, transparency, and hardware cursor. BitBLT for faster graphics.

## Video Output Interfaces
️· Analog Video Output: NTSC/PAL encoding.
️· Digital Video Output: Supports digital video outputs.

## Audio Decoder
️· Features: Decodes MPEG-1 Layer I/II audio. Outputs PCM and SPDIF.

## Synchronization
️· Features: System time clock, startup/runtime synchronization, audio/video synchronization.

## Extension Bus Interface (EBI)
️· Features: Connects to external peripherals. Supports DRAM, ROM, and other devices.

## High Speed Data Interface (HSDI)
️· Features: Connects to IEEE 1394, IEEE 1284, or external DMA devices.

## Communication Processor
️· Features: Includes UARTs, IR ports, and a Smart Card interface.

## Device Control Interfaces
️· Features: Includes reset and JTAG pins.

## Register Maps
️· Detailed register definitions for various modules (NTSC/PAL, BitBLT, CCP, Audio Decoder, Video Decoder, OSD, TC, TPP).

## Timing Diagrams & DC Parameters
️· Detailed timing diagrams for DRAM interface, EBI, video output interfaces, HSDI, and DC electrical characteristics.