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PDF OM5730 Data sheet ( Hoja de datos )
| Número de pieza | OM5730 | |
| Descripción | STB5860 Set-Top Box STB concept | |
| Fabricantes | NXP Semiconductors | |
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INTEGRATED CIRCUITS
DATA SHEET
OM5730
STB5860 (Set-Top Box) STB
concept
Preliminary specification
File under Integrated Circuits, IC02
1999 Aug 25
1 page  
Philips Semiconductors
STB5860 (Set-Top Box) STB concept
Preliminary specification
OM5730
• Volume control for linear PCM samples in three steps:
−6, −12 and −18 dB
• Burst-formatting of AC-3 elementary streams and
MPEG-2 multi-channel streams in ES or PES format for
interconnection with an external multi-channel decoder
via the digital audio output or the IEC 958 output
• Serial multi-channel digital audio output with
16, 18, 20 or 24 bits/sample, compatible either to I2S or
Japanese formats; output can be set to high impedance
mode via the external controller
• Serial Sony/Philips Digital Interface (SPDIF) (IEC 958)
audio output; output can be set to high-impedance
mode.
1.2.6 GRAPHICS FEATURES
• Graphics is presented in boxes independent of video
format
• Boxes can be up to full screen allowing double buffer
display mechanism
• Two independent graphics planes are available for
background and/or graphics overlay
• Two independent data paths with RGB 4 : 4 : 4 and
YCbCr 4 : 2 : 2 formats available with independent
mixing
• RGB path transparent to YCbCr format
• Screen arrangement of boxes is determined by display
list mechanism which allows for multiple boxes,
background loading, fast switching, scrolling,
overlapping and fading of regions
• Real-time anti-flickering performed in hardware;
programmable hardware available for off-line
anti-flickering
• Hard-edged or soft-edged wiping of regions available
• Support of 2, 4, 8 and 16 bits/pixel in fixed bit maps
format or coded in accordance to the DVB variable/run
length standard for region based graphics
• Chrominance down-sampling filter switched per region
• Display colours are obtained via Colour Look-Up
Tables (CLUT) or directly from bitmap. CLUT output can
be YCbCrT at 8-bit for each signal component thus
enabling 16M different colours and 6-bit for T which
gives 64 mixing levels with video. CLUT output can also
be RGBT with same resolutions. Non-linear processing
available by means of LUTs.
• Conversion matrices available to allow any format on
any different data path (RGB or YCbCr)
• Graphics boxes may overlap vertically even inside one
graphics layer due to the use of flexible chained
descriptors
• Internal support for fast 3-D block moves in external
SDRAM through Data Manipulation Unit (DMU)
• DMU allows format conversion and bit manipulation
from a chained list of instructions
• Graphics mechanism can be used for signal generation
in the vertical blanking interval; useful for teletext, wide
screen signalling, closed caption, etc.
• Support for a single down loadable cursor of 1 K pixel
with programmable shape
• Supported shapes are 8 × 128, 16 × 64, 32 × 32,
64 × 16 and 128 × 8 pixels
• Cursor colours obtained via two 16 entry CLUTs with
YCbCrT at 6, 4, 4 respectively
• 2 bits and RGBT at 4, 4, 4 respectively 4 bits (or 4, 5, 3,
respectively 4 bits); mixing of cursor with video and
graphics in 4 levels
• Cursor can be moved freely across the screen without
overlapping restrictions.
2 GENERAL DESCRIPTION
2.1 Introduction
The Philips Semiconductors Set-Top Box (STB) concept is
a Digital Media Broadcast (DMB) platform designed to
help developers bring the right product to market at the
right time, with a minimum of risk. A complete hardware
and software solution for fully-featured digital cable,
satellite and terrestrial system; it is based around a
powerful, programmable embedded microprocessor core,
allowing manufacturers to develop and rapidly evaluate
system designs and test application software.
This programmability is the key to maintaining flexibility
and reducing risk. Application software can be easily
modified to meet changing requirements, so highly
featured and differentiated STB designs can be brought
quickly to market. It also allows flexible handling of
graphics, so manufacturers can implement menus,
Electronic Program Guides and the sophisticated
graphics-based features expected by today’s users.
Sophisticated hardware is supported by a full suite of
software, developed in partnership with customers to meet
real-world needs and provide the reliability required for
consumer electronics products.
1999 Aug 25
5
5 Page 
Philips Semiconductors
STB5860 (Set-Top Box) STB concept
Preliminary specification
OM5730
Pin 16 control as per SCART specification for RGB fast
blanking (in this case used to switch between RGB and
composite).
4.5 Memory
4.5.1 NON-VOLATILE MEMORY (NVM)
A 32-kbyte NVM is implemented with an EEPROM
connected to the I2C-bus to allow for channel data storage,
etc.
4.5.2 DRAM
2 Mbytes (1M × 16); 60 ns fast or hyper-page mode.
4.5.3 BOOT ROM
256 kbytes (256 kbytes × 8) to allow for ROM boot up and
also to provide ROM emulation.
4.5.4 FLASH
2 Mbytes [2 × (512K × 16)]; this can be is upgraded to
4 Mbytes [2 × (1M × 16)].
Two flash banks are needed to allow code to be run from
one bank while writing to the other.
4.5.5 VIDEO AND GRAPHICS RAM
4 Mbytes SDRAM [2 × (1M × 16)] at 81 MHz.
4.5.6 MEMORY OPTIONS
Surface mount links can select memory configuration.
Remark: the boot CS is selectable between boot ROM and
flash.
4.6 Connectors
Table 3 The main board connectors
CONNECTOR
Optical SPDIF
SPDIF
SCART
3 phonos (RCAs)
SVHS
CCIR 656 connector
JTAG
DEBUG socket
RS232
IEEE 1394
IEEE 1294
DESCRIPTION
a SPDIF signal from the SAA7215 is brought out via an optical output connector
to allow connection of the Philips SAA2505 AC3/MPEG7.1 surround sound
1 standard SCART, audio/video output signals only
CVBS, right audio and left audio
the Y/C output from the SAA7215 is brought out to a standard SVHS connector
a connector to the CCIR 656 YUV output from the SAA7215
a standard JTAG connector for boundary scan testing
two 64 pins DIN connectors form the debug socket allowing connection to a ROM emulator via
a debug interface board (not included)
an additional RS232-C (±12 V) interface to provide a board connector for debug use; one half
of a suitable RS232 driver chip will be used for signal level conversion
the Philips PDI1394L11 and PDI1394P11 is implemented to provide half-duplex 1394 access
from the SAA7219; under isolation mode the power for the physical IC will be taken from the
bus via the switching regulator; the option between isolated and non-isolated is selectable via
option links; two 1394 connectors are available on the back panel
subject to Electro-Static Discharge (ESD), standard logic are implemented as buffers to
provide 1284 to a 25-way D-type female connector on the back panel
1999 Aug 25
11
11 Page | ||
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| PDF Descargar | [ Datasheet OM5730.PDF ] | |
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