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betajet
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SoCs with programmable logic
betajet   7/12/2013 3:02:59 PM
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The examples I gave all use device registers which the SoC configures at boot time and can reconfigure at run time.  So the logic has volatile SRAM configuration like Xilinx/Altera rather than non-volatile anti-fuse or flash cells like Actel/MicroSemi.  The SoCs I mention above all have flash memory for programs and fixed data -- this includes the code and data to configure the logic.


In the PSoC case, there's lots of configuration so there's lots of SRAM -- something Cypress has always excelled at.

krisi
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Re: maybe the other around?
krisi   7/12/2013 10:52:12 AM
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What is teh technology behind small programmable blocks in Soc? FPGA requires anti-fuses, which is a special processing step. SoC is done in typical CMOS, so how can you get anything programmable (in a non-volatile sense) there?

betajet
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Re: maybe the other around?
betajet   7/11/2013 8:15:36 PM
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A number of ARM-based NXP microcontrollers have a State Configurable Timer block which lets you create state machines for controlling counters and for serial pattern matching.  Not anywhere as general-purpose as PSoC, but great for real-time input events and output waveforms from what I can tell from NXP presentations.  These functions would otherwise require a CPLD or small FPGA.


Microchip has recently added Configurable Logic Cells to some 8-bit microcontrollers.  From what I've seen, they're pretty limited but useful for things like interrupting based on a combination of input conditions.  I think the idea is similar to PSoC where you combine various on-chip building blocks to make higher-level real-time functions so you don't have to find a microcontroller with that exact function built in, or else double the cost of your microcontroller by adding a CPLD or small FPGA.

krisi
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Re: maybe the other around?
krisi   7/11/2013 6:45:11 PM
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thank you betajet, that is exactly what I had in mind...there must be more exampels of SoC devices (that contain some uP cores) with small amount programabbility

betajet
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Re: maybe the other around?
betajet   7/11/2013 6:36:54 PM
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Cypress PSoC does this.  PSoC 5 has ARM Cortex-M3, PSoC 4 has ARM Cortex-M0.  Both have analog and digital peripherals, including PLAs and 8-bit data path blocks.  Very nice architecture IMO, and most configuration registers are fully documented.

The PSoC 4 Pioneer Kit is very attractive at US$25.

krisi
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CEO
maybe the other around?
krisi   7/11/2013 4:16:46 PM
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How about SoC guys implementing small amount of programmibility into their SoC devices?

_hm
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CEO
Analog Modules
_hm   7/10/2013 8:59:33 PM
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FPGA should add more of precision analog modules to further its market. It can include MEMS and other types of sensors - system on chip concept.

 



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