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| 型號： | CS1311 |
| 文件頁數(shù)： | 3/25頁 |
| 文件大小： | 542K |
| 代理商： | CS1311 |
Revision 2.2
3
www.national.com
G
1.0
The CS1301/CS1311 multimedia companion acts as a
coprocessor to decode multimedia in National’s Geode
SC1200/SC1201, SC2200, and SC3200 (SCx200 unless
otherwise specified). Figure 1-1 provides a typical system
block diagram.
System Architecture
Media decoding is one of the most demanding system
applications. If media is decoded on the main processor, a
much higher performance processor is required to achieve
even comparable levels of media decoding quality. Such a
system would be significantly over-designed for other
tasks, such as browsing the Internet. Using a low-cost pro-
cessor that is ideally suited for all tasks, and adding the
coprocessor for the high performance media decoding
requirement, results in a cost-effective solution.
Another advantage of an processor/coprocessor solution is
that an OEM (Original Equipment Manufacturer) can pro-
vide a scalable solution. A single board can be designed
that supports the coprocessor. If it is desired to support a
low-end product that does not support the high quality
media decoding capabilities, the coprocessor and its sup-
porting components can be excluded from the system,
which results in additional savings in an already cost-effec-
tive design.
1.1
The CS1301/CS1311 was designed to be a general pur-
pose media data processor. As such, the CS1301/CS1311
is
capable
of
far
more
CS1301/CS1311 solution. The solution that National is pro-
viding
is
only
one
possible
CS1301/CS1311 and only this implementation is fully sup-
ported by National Semiconductor. In order to maintain
software compatibility with National’s provided software,
any deviation of the CS1301/CS1311 section of the sche-
matic is strongly discouraged.
IMPORTANT DESIGN NOTE
than
the
current
National
implementation
of
the
For those wishing to deviate from the schematic, or wishing
to
take
advantage
of
CS1301/CS1311, documentation is available on the Philips
Semiconductors SDE CD-ROM to support design varia-
tions. However, additional support to implement these vari-
ations must be obtained from one of the TriMedia Alliance
Partners who support the CS1301/CS1311, its software,
and the peripheral functions.
other
features
of
the
For a list of TriMedia Alliance Partners, visit:
http://www.trimedia.com/TAPP/
Figure 1-1. System Block Diagram
D
C
Sub-ISA
USB 1, 2, 3
Flash or
M-Systems’
DiskOnChip
Display: TV, CRT, or TFT
SDRAM
PCI Bus
AMP
LM4880
Codec
LM4549
XpressROM
BIOS
IRDA
IDE
CompactFlash
CCIR 656 VIP
WM8725
DAC
Geode
TM
CS1301/
CS1311
Geode
TM
SCx200
SDRAM
EEPROM
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