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参数资料
| 型号： | OM5721 |
| 厂商： | NXP Semiconductors N.V. |
| 英文描述： | STB5660 Set-Top Box STB concept |
| 中文描述： | STB5660机顶盒机顶盒的概念 |
| 文件页数： | 11/20页 |
| 文件大小： | 100K |
| 代理商： | OM5721 |
1999 May 05
11
Philips Semiconductors
Product specification
STB5660 (Set-Top Box) STB concept
OM5721
4.5
Memory
4.5.1
N
ON
-V
OLATILE
M
EMORY
(NVM)
A 32-kbyte NVM is implemented with an EEPROM
connected to the I
2
C-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
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 up-graded 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
G
RAPHICS
RAM
4 Mbytes SDRAM [2
×
(1M
×
16)] at 81 MHz.
4.5.6
M
EMORY OPTIONS
Surface mount links can select memory configuration.
Remark: The boot chip select is selectable between Boot
ROM and Flash.
4.6
Connectors
Table 2
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.
A surface mount DEBUG socket allowing connection to a Philips REDDX connector via a
conversion board to allow connection to a REDDNET or REDDROM board.
An additional RS232-C (
±
12 V) interface to provide a board connector for debug use.
RS232
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 SAA7214.
IEEE 1394
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.
IEEE 1294
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