18 lines
364 B
Python
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)
|