SAA7215HSSLASHC2 datasheet(16/20 Pages) PHILIPS

16 / 20 page

1999 Aug 25

Philips Semiconductors

Preliminary speciﬁcation

STB5860 (Set-Top Box) STB concept

OM5730

DEVELOPMENT ENVIRONMENT

This chapter describes how to develop your own STB5860

application, what environment you need and what

hardware and software interface the system provides.

It details what is needed to start developing your

application and in addition will tell you what you will receive

with the system that gets you on your way and shorten

development time and reduce the costs involved.

6.1

Summary of the STB5860 kit

When you receive the STB5860 development system it will

offer you a complete set-top box system along with the

necessary documentation for development. This will give

you a ‘plug and play’ solution to test and develop a system

based on this platform.

6.1.1

THE HARDWARE

This consists of a satellite front-end board, a front panel

with the display and IR-receiver, a main board, smart card

unit, the remote control and all cables needed to make the

necessary connections. On the main board you will find a

programmed EPROM and flash memory.

6.1.2

THE SOFTWARE

You will receive not only the binary executable, but also all

source codes in C, header files and documentation files.

The software will include the complete Application

Programmers Interface (API) for all components on the

board, except for IEEE 1394, which will be a subset of the

standard. This API will offer a developers logical services

like audio, video, graphics, descrambling, etc. Together

with this you will get the Feature Demonstration

Application (FDS). This is an application that will show you

the key features of the system.

6.1.3

DOCUMENTATION

Here you will find the user manual and programmers

reference for all major parts of the system like the

SAA7215 (AVG decoder chip), the SAA7219 CPU MPEG2

stream transporter and the satellite front-end module

(OM5718).

6.1.4

TEST REPORTS

These are included to prove the system maturity. You will

see the reports of the API tests and the reports concerning

the extensive in-system test. The latter is done to prove the

chip-set in a complete system environment, a customer

like set-up, customer use based on our experience with

previous end-customers.

6.2

How to get started

The first day you receive the system you can hook up a

satellite dish or transport stream (DiSeqC or not), a TV,

connect power to the system and it will start with the FDS

program. This demo gives you a menu driven interface to

the system. You can test and experiment with all main

features of the system. See how fast the on-screen display

functions, try out the IEEE 1394 interface to a similar

board, look at window tests, try out teletext, etc. This will

give you an understanding of the system and its

possibilities.

6.3

Hardware interface with the STB5860

Besides the dish and the TV (SCART, SVHS and

CCIR 656 YUV) there is an interface to IEEE 1394, SPDIF

(multi-channel audio decoder), to a PC via RS232 and

IEEE 1284 (Centronics), a debug socket (ROM

emulator and I/O), JTAG connector (boundary scan

testing), smart card unit and a remote control.

To use a ROM emulator there are two I/O connectors on

the main printed-circuit board where an extension board

will fit on the debug connector. This extension gives you

access to two footprints for 1-Mbyte ROMs.

6.4

Software interface with the STB5860

In the following way you can interface to the system to

develop and debug your own application. Connect a PC

(or other development system) with a ROM emulator to

extension board on the debug connector, compile the

supplied source code and load the executable in the ROM

emulator. Connect the RS232 debug port to the PC and

run a terminal program, this will give you a debug screen.

If you don’t have a ROM emulator you can use the parallel

port (IEEE 1284) of the set-top box. There is a loader

program embedded in the EPROM of the system which

allows development without ROM emulator.

The maximum possible memory configuration is as

follows. A boot ROM (256 kbytes) with the loader program,

2 Mbytes fast DRAM as scratch memory, 32 kbytes NVM

for channel data storage, 4 Mbytes flash memory to store

the program and 4 Mbytes SDRAM video memory.

The boot chip select can be switched between boot ROM

and flash memory. Of course a smaller configuration is

possible, just leave the memory footprints open.

6.5

Running ‘hello world’

We have supplied a small program which is called ‘hello

world’ to help you start developing your own software.

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