Allwinner A20 - Page 742

A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 742 / 812
6.11.3.2. RX OPERATION
MAC Receive
Frame
DA/SA Filter
Check Error Frame(Length,
CRC) and Control Frame
PASS Frame?
Pass DA/SA
Filter
Wait for Frame Receiving
Completed
yes no
yes
no
Remove Current Frame From RX FIFO
Current Frame is Valid
Host Receive
Frame
RX FIFO
Available
Host Receive
Frame
yes
no
Receive (Data Packet, RSV) From RX
FIFO
Each received packet has 8-byte header followed with data of the reception packet which CRC field isn’t
included. The format of the 8-byte header is 4Dh, 41h, 43h, 01h, PKT_SIZE low and PKT_SIZE high