Xilinx Virtex-4 User Manual page 48

Chapter 3: Client, Host, and MDIO Interfaces
CLIENTEMAC#TXCLIENTCLKIN
PHYEMAC#MIITXCLK
(CLIENTEMAC#TXCLIENTCLKIN/2)
CLIENTEMAC#TXDVLD
CLIENTEMAC#TXDVLDMSW
EMAC#CLIENTTXACK
CLIENTEMAC#TXFIRSTBYTE
CLIENTEMAC#TXUNDERRUN
EMAC#CLIENTTXCOLLISION
EMAC#CLIENTTXRETRANSMIT
CLIENTEMAC#TXD[15:0]
EMAC#PHYTXD[7:0]
(SGMII or 1000BASE-X
PCS/PMA only)
EMAC#PHYTXCHARISK
(SGMII or 1000BASE-X
PCS/PMA only)
EMAC#PHYTXCHARDISPMODE
(SGMII or 1000BASE-X
PCS/PMA only)
Figure 3-12
number of bytes in the frame.
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48
DA
/I1/ /I2/ /I2/ /I2/ /I2/ /S/
Figure 3-11: 16-Bit Transmit (Even Byte Case)
shows the timing of a normal outbound frame transfer for the case with an odd
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SA DATA
PRE
SFD
Embedded Tri-Mode Ethernet MAC User Guide
UG074 (v2.2) February 22, 2010
R
FCS
/T/ /R/ /I1/
ug074_3_13_080705