numeric
Newbie level 1
What are some modern fast/flexible Intermodule / PCB-to-PCB busses commonly used with FPGAs/SOCs?
That is, buses that are off chip and off board.
Some I can think of off the top of my head are.
Serial:
I2C, SPI, and RS485: very simple but flexibility and speed are limited.
PCI Express: Fast and flexible, but would need an FPGA on each card to interface to it.
Parallel:
ISA/PCI: fast and somewhat flexible (limited # of cards) but older and some level of intelligence is required on each card to support the bus.
Something like an AXI bus seems like it could fill the roll but It seems like it is an on-chip only buss.
That is, buses that are off chip and off board.
Some I can think of off the top of my head are.
Serial:
I2C, SPI, and RS485: very simple but flexibility and speed are limited.
PCI Express: Fast and flexible, but would need an FPGA on each card to interface to it.
Parallel:
ISA/PCI: fast and somewhat flexible (limited # of cards) but older and some level of intelligence is required on each card to support the bus.
Something like an AXI bus seems like it could fill the roll but It seems like it is an on-chip only buss.