S3C4530A Datasheet, PDF (282/432 Pages) Samsung semiconductor – 16/32-bit RISC microcontroller is a cost-effective, high-performance microcontroller

ETHERNET CONTROLLER
S3C4530A
Carrier Sense== On
yse
Carrier sense = On,
after detection SFD,
store byte-stream in in FISO
Recognize Address?
no _{Discard the Frame}
Report Error Status
Move the byte stream in
the FIFO to the receive
buffer memory
Frame too short ?
Frame too long?
Valid FCS ?
Interrput CPU for
Handing the Frame
Check ethertype or length field
Disassemble Frame
MAC Drive Software
(Software jobs for typical LAN cards)
Signal to Upper Layer
Figure 7-24. CSMA/CD Receive Operation
7-58