Embedded
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Problems with VHDL lookup table in Quartus [Also posted to comp.lang.vhdl by mistake, sorry about that] Hi, I'm trying to debug a Cyclone design which writes values taken from a lookup table to the address inputs of a crosspoint analog switch. The problem is that everything looks OK in the Quartus simulator, but when I test the design on the target ha... 30 Jul 2010 06:24
Opps: DDS Interface It would help if I used the right abbreviation, DDS for Digital Data System and older telecom data interface similar to T1, but slower, with no framing I believe. Rick On Jul 26, 10:19 am, rickman <gnu...(a)gmail.com> wrote: We happen to be doing an upgrade to an existing card I am selling a customer and th... 27 Jul 2010 04:03
DSS Interface We happen to be doing an upgrade to an existing card I am selling a customer and they are asking about the feasibility of providing a DSS interface (56 kbps AMI encoding). Their thought was to use the audio I/O which has very strong differential drivers with an output impedance of 50 ohms. We can boost the sample... 26 Jul 2010 10:30
Fibre Optic Cable Linking I am looking for reference materials and design ideas for implementing a customized high speed synchronous serial communications solution over a fiber optic cable pair (one for Rx and the other for Tx). This link would be between two system boxes and would require a net data rate throughput of 100 megabits pe... 26 Jul 2010 10:30
32 bit USB uC in 48pins We are evaluating low end 32 bit USB (device only) uCs. Ideally, we want 64K flash and 30 I/Os in 48 pins. So far, these are possible choices: Are there any other we should like into? AT32UC3B164 64K 28 two I/O short LPC1343FBD48,151 32K 40 no 48 pins in 64K NUC120LD3AN 128K 31 unproven product/c... 7 Aug 2010 15:49
What might be the meaning of 10-tooth machine? Following is a link to a typical machine. http://www.cat.com/equipment/skid-steer-loaders# What might be the meaning of by 10-tooth machine? Is it the teeth on the gears? --------------------------------------- Posted through http://www.EmbeddedRelated.com ... 23 Jul 2010 13:36
lex/yacc efficiency tradeoffs Hi, Does anyone have any rule-of-thumb guidelines for the relative efficiencies of doing promotions in the lexer vs the formal grammar? Both in terms of time and space? E.g., imagine: [1-9][0-9]{2,4} return VALUE; in the lexer vs. the same explicit definition in the *grammar*? (i.e., using ". return... 29 Jul 2010 02:05
Data transfer via ezusb.sys Hi everyone, I'm using ezusb.sys driver to send data to CY7C68013A chip (BULK TRANSFER). Suppose i need to send 4 bytes.Do i need to add additional 508 zero bytes to packet when i'm using DeviceIoControl with EZ_USB_BULK_WRITE? --------------------------------------- Posted through http://www.Embedde... 22 Jul 2010 19:07
Migrating from PIC18 to ARM: which MCU to choose? We have a product based around the PIC18F6680 which is now becoming a rare and expensive part. Since it looks like ARM devices are winning the popularity war, the chips are cheap and plentiful. The question is, with so many vendors and parts to choose from which one should we go with? The main requirements for this... 12 Aug 2010 02:47
Black box inventor David Warren dies at 85 Black box inventor David Warren dies at 85 July 22nd, 2010 THE TERRITORY-born inventor of the black box flight recorder has died. David Warren died, aged 85, at a Melbourne nursing home on Monday. He was involved in investigating the crash in 1953 of the world's first commercial jet airliner, the Comet, as ... 22 Jul 2010 19:07 |