how to use mcu to remote updata cpld? how to relalize?

Hi,

You might be able to use but with certain limitation. You can only use the Nios II/e version and the limitation below.

Nios II/e[edit]

The Nios II/e core is designed for smallest possible logic utilization of FPGAs. This is especially efficient for low-cost Cyclone II FPGA applications. Features of Nios II/e include:

• Up to 2 GB of external address space
• JTAG debug module
• Complete systems in fewer than 700 LEs
• Optional debug enhancements
• Up to 256 custom instructions
• Free, no license required