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FPGA , where it programs the sequential logic and cobinational logic of a Design.

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hcu

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Hi,

It is a ISRO question in 2015. Can somebody give a clear understanding of FPGA resources and where actually the board keeps the combo logic and sequential logic after programmed.
 

hcu said:
View attachment 137319

Hi,

It is a ISRO question in 2015. Can somebody give a clear understanding of FPGA resources and where actually the board keeps the combo logic and sequential logic after programmed.
Click to expand...

Board? The FPGA doesn't have a board it might have a substrate in the package that the die is bonded to...

Well combonational logic in SRAM based FPGAs are all made up a combination of LUT and routing if the combo function doesn't all fit within one LUT. Now as LUTs are RAM you could also make combo logic out of Block RAM. So unless this is a trick question all three items can be used to implement combonational logic.
 

b. Configuration Logic Block (CLB) which contains the LUT to perform combinational logic.
 

Most modern SRAM based FPGAs store their "program" on an of-chip EEPROM.
Upon power up - data from the EEPROM is transferred to the chip and configures the FPGA logic.
 

shaiko said:
Most modern SRAM based FPGAs store their "program" on an of-chip EEPROM.
Upon power up - data from the EEPROM is transferred to the chip and configures the FPGA logic.
Click to expand...

I don't think OP meant storage of bitstream.
 

param said:
b. Configuration Logic Block (CLB) which contains the LUT to perform combinational logic.
Click to expand...


ok then, what if the question is on sequential logic ??
 

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