Datasheet

Table Of Contents
Fast Ethernet Controller (FEC)
Freescale Semiconductor 17-37
Figure 17-27. Ethernet Address Recognition—Receive Block Decisions
Accept/Reject
Broadcast Addr
?
?
PROM = 1
?
Receive
Address
Tr ue
False
Tr ue
False
BC_REJ = 1
?
Frame
Hash Match
?
Exact Match
?
Pause Frame
False
False
False
False
Tr ue
Tr ue
Tr ue
Tru e
Receive Frame
Receive Frame
Receive Frame
Receive Frame
Reject Frame
Reject Frame
Set BC bit in RCV BD
Set MC bit in RCV BD if multicast
Set M (Miss) bit in Rcv BD
Set MC bit in Rcv BD if multicast
Set BC bit in Rcv BD if broadcast
Flush from FIFO
Flush from FIFO
Recognition
Notes:
BC_REJ - field in RCR register (BroadCast REJect)
PROM - field in RCR register (PROMiscous mode)
Pause Frame - valid PAUSE frame received
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3