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本帖最后由 cloudol 于 2011-5-13 15:51 编辑
asdfjkl 发表于 2011-5-13 15:08 ![]()
怎么可能? 你当中国这么多做基带的都是傻子,连单芯片还是双芯片的都不知道?
你自己去找找高通的网站 ...
http://www.qualcomm.com/documents/files/snapdragon-fact-sheet.pdf
SNAPDRAGON FEATURESTHE FEATURE SET FOR THE SNAPDRAGON-BASED
CHIPSET PLATFORM INCLUDE:
?Enhanced ARM-based single- and dual-core CPUs for high performance mobile computing
?Integrated 3G mobile broadband
http://www.qualcomm.com/documents/files/snapdragon-msm8x60---apq8060-product-brief.pdf
The Snapdragon family incorporates Qualcomm’s
advanced modem technology for high-speed
mobile broadband.
官方文档说得都不清楚 只是说msm集成或者包含基带 而没有说到底是不是封装在一起
http://www.qualcomm.com/documents/files/linley-report-dual-core-snapdragon.pdf
each processor comprises one or two Scorpion CPUs with leveltwo
cache; hard-wired accelerators for video, imaging, and
graphics; a DSP for audio processing; a 2G/3G cellular baseband;
and various system interfaces that
connect to the other components in a
handset. To simplify system design, the
processor integrates several analog
interfaces such as audio inputs and outputs,
component and S-Video, and a
touchscreen controller.
the primary functions of a leadingedge
smartphone can be implemented using four major
chips, all supplied by Qualcomm, plus memory. This partitioning
is unique in the cellular industry. Several vendors
have integrated 2G-cellular RF into the cellular-baseband
processor, but none has yet managed this trick with morecomplex
3G-RF circuitry. Instead of adding this analog
circuitry to the processor, which is built in a leading-edge
digital-IC process, Qualcomm combines it with connectivity
functions that also comprise mainly analog circuitry.
(The digital GPS baseband remains in the Snapdragon processor,
as in other Qualcomm designs.) These functions are
built in an analog-optimized IC process, reducing manufacturing
cost. Vendors such as CSR and Texas Instruments
offer combo chips for Bluetooth, FM, and GPS, but these
vendors cannot add cellular-RF functions that are customized
for a specific cellular baseband.
Strength in Cellular
Snapdragon’s biggest differentiator is its integrated cellular
baseband. Tegra 2, OMAP 4, and Atom are all standalone
application processors that require a separate cellularbaseband
chip. Although some smartphone vendors, such as
Apple, prefer this configuration, most are moving toward
integrated solutions that eliminate the cost and board area of
the second chip.
而这2段的描述 我觉得更应该倾向于理解成单个芯片都包含了
这个图 cell BB (Baseband) 明显在msm8660内部
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