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Recent content by casual3_2002

  1. C

    iPhone's multi-touch sensing technology

    bcm5974 Apple uses the "mutual capacitance" sensing scheme. The scheme works like this: the Broadcom BCM5974 touch controller sends the timing info to TI's line driver CD3238, the line driver is, in essence, a level shifter and it drives out a 18V square/sine wave to drive the Y lines one...
  2. C

    How is the external crystal connected to the PLL?

    Re: crystal and PLL We have a PLL hard macro, I'm not sure what to put between the PINs and the PLL, is it a cell I can get from the foundry or something else, what about the parameters? Thanks!
  3. C

    How is the external crystal connected to the PLL?

    crystal and PLL we have a chip with XIN/XOUT (crystal in/out) pins defined which are supposed to be connected to the on-chip PLL, but I'm not sure how is the external crystal connected to the PLL, is it direct connection or through some other components? Thanks!
  4. C

    VHDL verilog mixed simulation and synthesis

    Can anyone post some links to the mixed mode VHDL/verilog simulation and synthesis documents? I need to use a VHDL IP in a verilog environment, I'd like to know how to instantiate the VHDL IP in our verilog code for simulation and synthesis. Thanks a lot!
  5. C

    VHDL synthesis errors

    I'm new to VHDL. I have an entity which has a signal defined as 'generic' and used in the entity. The synthesis error reads like: used constant ??? which has not been given a value. i'm using DC compiler command: read -f vhdl file.vhd Thanks!
  6. C

    help on MSP430 I2C programming

    msp430 i2c Anyone has some examples of MSP430 I2C programs for writing to a slave register? The protocol is: STart --> Device Address+Write --> ACK --> Register Address --> ACK --> Data ...... --> StoP TI's I2C C examples is like: I2CTCTL |= I2CTRX + I2CSTT + I2CSTP; which does not specify the...
  7. C

    samsung K9K vs K9F flash

    samsung k9k Is there any major difference between these two flash memory? It's been said that SigmaTel's mp3 SOC doesnt support K9F which is much cheaper than K9K.
  8. C

    looking for aacPlus audio decoder C reference source code

    Re: looking for aacPlus audio decoder C reference source cod i'm not very familiar with audio decoding. but seems faad2 includes what you need. here's an excerpt from the README file. "FAAD2 includes code for SBR (HE AAC) decoding." I suppose AAC+ is HE AAC or SBR decoding. faad2 d/l...
  9. C

    Ramanujam notebooks vol 1 to 5

    Re: Req: Ramanujam notes I think you meant Ramanujan's Notebooks. Here are the free downloads for volume 1&2. Volume 3 is also available in scanned PDF from eMule /http://www.comms.engg.susx.ac.uk/fft/math/RamanujanNotebooks1.pdf...
  10. C

    MS thesis dissertation about GMSK Modems from Texas A&M

    Re: [REL]: GMSK modems lambert_thesis.pdf can be downloaded from: /http://ee-wcl.tamu.edu/publ/theses/lambert_thesis.pdf /http://wcl3.tamu.edu/publ/theses/lambert_thesis.pdf
  11. C

    Rel: PCM Voiceband modem design

    can be downloaded free from: /wcl3.tamu.edu/publ/theses/luis_thesis.pdf /wclb.tamu.edu/publ/theses/luis_thesis.pdf /http://web.archive.org/web/20030421214412/http://wclb.tamu.edu/publ/theses/luis_thesis.pdf
  12. C

    Looking for good books about Delphi and Pascal

    Re: Delphi both essential delphi and essential pascal are free books: /http://www.marcocantu.com/edelphi/EssentialDelphi_103.pdf /http://www.marcocantu.com/epascal/EssentialPascal.pdf
  13. C

    Looking for rolling codes algorithm

    you need to reset the transmitter and receiver before putting them in use. then, whenever the transmitter sends a code and the receiver gets it, the code changes to the next one, it's that easy. transmitter and receiver are running the same algorithm and a comparison is done at the receiver. the...
  14. C

    Looking for rolling codes algorithm

    please clarify your question. are you looking for the algorithm as used in a car key fob (keyless entry) or garage door opener? this is just simple PRBS and can be implemented as a shift register with XOR taps, pretty easy.
  15. C

    Solution to lack of multi document interface in NEdit?

    Re: Multi document NEdit never tried it before, just got it from google search: see tip 2: tabbed buffers patch /http://nedit.gmxhome.de/tips.html
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