CSCE 3612 ch7-2

CSCE 3612 ch7-2 - Multiprocessors Consumer electronics...

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© 2008 Wayne Wolf Overheads for Computers as Components 2 nd ed. Multiprocessors Consumer electronics systems. Cell phones. CDs and DVDs. Audio players. Digital still cameras.
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Consumer electronics use cases Multimedia: stored in  compressed form,  uncompressed on  viewing. Data storage and  management: keep track  of your multimedia, etc. Communication:  download, upload, chat. © 2000 Morgan Kaufman Overheads for Computers as Components
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Non-functional requirements for CE Often battery-operated, strict power  budget., Very inexpensive. User interface must be capable but  inexpensive. © 2000 Morgan Kaufman Overheads for Computers as Components
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CE devices and hosts Many devices talk to host  system. PC host does things that  are hard to do on the  device. Increasingly, CE  devices communicate  directly over the  network, avoiding the  host for access. © 2000 Morgan Kaufman Overheads for Computers as Components
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Platforms and operating systems © 2000 Morgan Kaufman Overheads for Computers as Components Many CE devices use  a DSP for signal  processing and a  RISC CPU for other  tasks. I/O devices include  buttons, screen, USB.
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Flash file systems Flash is widely used for mass storage. Flash wears out on writing (up to 1 million  cycles). Directory is most often written, wears out first. Flash file system has layer that moves  contents to levelize wear. Hides wear leveling from API. © 2000 Morgan Kaufman Overheads for Computers as Components
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Cell phones Most popular CE  device in history;  most widely used  computing device. 1 billion sold per year. Handset talks to cell. Cells hand off  handset as it moves. © 2000 Morgan Kaufman Overheads for Computers as Components
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Cell phone platforms Today’s cell phones use  analog front end, digital  baseband processing.
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This note was uploaded on 09/30/2008 for the course CSCE 3612 taught by Professor Goodrum during the Fall '08 term at North Texas.

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CSCE 3612 ch7-2 - Multiprocessors Consumer electronics...

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