Figure 17-27, Illustrates the address, As shown in – Motorola ColdFire MCF5281 User Manual
Page 347: Ause frame detection, shown in
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
True
False
True
False
BC_REJ = 1
?
Frame
Hash Match
?
Exact Match
?
Pause Frame
False
False
False
False
True
True
True
True
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