litex/misoclib/ethmac/std.py

18 lines
364 B
Python

from migen.fhdl.std import *
from migen.flow.actor import EndpointDescription
eth_mtu = 1532
eth_preamble = 0xD555555555555555
buffer_depth = 2**log2_int(eth_mtu, need_pow2=False)
def eth_description(dw):
parameters = {
"packetized": True
}
layout = [
("d", dw),
("last_be", dw//8),
("error", dw//8)
]
return EndpointDescription(layout, parameters)