1. Embedded Units
In more complex FPGAs There are many specialized circuitry,
particularly for DSP.
These include a variety of Adders, Multipliers, Processors
Memory Digital to Analog converters and so on.
For example:
Memory units of RAM 16 K to 10M RAM with different
organizations
Multipliers 25 * 18 bits or 18 * 18 bits multipliers from Xilinx,
and Altera
Adders A variety of adders example 48 bit adders from Xilinx
Processors MicroBlaze, IBM Power PC, Pico Blaze, from Xilinx
– ARM 9, Nios, MIPS from Altera