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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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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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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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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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