Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

Nios II core minimal frequency?

Hi, are there any constrains for system clock. I'm interested in lower freq. than default value 50MHz. When I tried lower freq. (1MHz ! ) JTAG UART terminal was not correct. Is N...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

I tested following configurations

f=5MHz - didn't work

f=10MHz - works fine, but JTAG UART was not readable - insted of Hello from Nios output was "Hell frmm Nioos"

f=25MHz - OK

Core cfg: code from internal RAM, UART 115200

Sw: "Hello from Nios" with output redirected to UART

Jan