15 Nov
2011
15 Nov
'11
8:20 p.m.
Mouse wrote:
For example, if a critical piece of the design is
analog electronics,
not digital at all. As a really simple example, it involve a D/A or
A/D converter.
VHDL lets you design such things, as does System Verilog. The FPGA
synthesis tools will certainly tell you that it can't fit it into an FPGA.
That said, it is possible to implement some types of A/D and D/A
converters in an FPGA with only a few external components. There are
application notes about that. Obviously the capabilities are very
limited compared to normal ADC and DAC parts, but there are times when
it is nevertheless quite useful.