STM7710

Introduction

7/23

Digitized NTSC or PAL programs can also be input to the STM7710 for reformatting and

display.

The STM7710 includes a graphics rendering and display capability with a 2D-graphics

accelerator, two graphics planes and a cursor plane. A dual display compositor provides

mixing of graphics and video with independent composition for each of the TV and VCR

outputs.

The STM7710 includes a stream merger to allow three different transport streams from

different sources to be merged and processed concurrently. Applications include DVR time

shifted viewing of a terrestrial program while acquiring an EPG/data stream from a satellite

or cable front end.

The flexible descrambling engine is compatible with required standards including DVB, DES

and Multi2.

The STM7710 has an embedded 200 MHz ST20 CPU for applications and device control

and allows a unified memory architecture by providing a high bandwidth DDR DRAM

interface. A second memory bus is also provided for Flash memory to store resident

software and connect peripherals.

An external hard-disk drive (HDD) can be connected either to the EMI or as an expansion

drive through the USB 2.0 port.

The STM7710 is supported by STMicroelectronics’ STAPI software, and provides a

compatible next-generation architecture for applications currently running on the STi5517

and STi7020.

Figure 1.

Low-cost satellite HD set-top box

STM7710

Transport

stream in

VCR

PTSN

STV0399

Smart

cards

MAFE I/F

Flash

IR Tx/Rx

128 Mbit

DDRAM

RGB/YPbPr/

CVBS/YC

HDMI

QPSK ZIF Rx