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| 型号： | OM5730 |
| 厂商： | NXP Semiconductors N.V. |
| 英文描述： | STB5860 (Set-Top Box) STB concept(STB5860机顶盒初步设计) |
| 中文描述： | STB5860（机顶盒）机顶盒的概念（STB5860机顶盒初步设计） |
| 文件页数： | 11/20页 |
| 文件大小： | 80K |
| 代理商： | OM5730 |
1999 Aug 25
11
Philips Semiconductors
Preliminary specification
STB5860 (Set-Top Box) STB concept
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
N
ON
-V
OLATILE
M
EMORY
(NVM)
A 32-kbyte NVM is implemented with an EEPROM
connectedtotheI
2
C-bustoallowforchanneldatastorage,
etc.
4.5.2
DRAM
2 Mbytes (1M
×
16); 60 ns fast or hyper-page mode.
4.5.3
B
OOT
ROM
256 kbytes (256 kbytes
×
8) to allow for ROM boot up and
also to provide ROM emulation.
4.5.4
F
LASH
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
V
IDEO AND GRAPHICS
RAM
4 Mbytes SDRAM [2
×
(1M
×
16)] at 81 MHz.
4.5.6
M
EMORY OPTIONS
Surface mount links can select memory configuration.
Remark:theboot CSisselectablebetweenbootROMand
flash.
4.6
Connectors
Table 3
The main board connectors
CONNECTOR
DESCRIPTION
Optical SPDIF
SPDIF
SCART
3 phonos (RCAs)
SVHS
CCIR 656 connector
JTAG
DEBUG socket
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
RS232
IEEE 1394
IEEE 1294
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