Freescale Semiconductor MPC5553

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MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5

14-40 Freescale Semiconductor

Figure 14-26. Ethernet Address Recognition—Receive Block Decisions

Accept/Reject

Broadcast Addr

PROM = 1

Receive

Address

Tr ue

NOTES:

BC_REJ - field in RCR register (BroadCast REJect)

False

True

False

BC_REJ = 1

Frame

Hash Match

Exact Match

Pause Frame

False

Tr ue

True

Receive Frame

Reject Frame

PROM - field in RCR register (PROMiscous mode)

Pause Frame - valid Pause frame received

Set BC bit in RxBD

Set MC bit in RxBD if multicast

Set M (Miss) bit in RxBD

Set MC bit in RxBD if multicast

Set BC bit in RxBD if broadcast

Flush from FIFO

Recognition

Freescale Semiconductor MPC5553 - Page 601