Xilinx Virtex-4 User Manual

48 www.xilinx.com Embedded Tri-Mode Ethernet MAC User Guide
UG074 (v2.2) February 22, 2010
Chapter 3: Client, Host, and MDIO Interfaces
R
Figure 3-12 shows the timing of a normal outbound frame transfer for the case with an odd
number of bytes in the frame.
Figure 3-11: 16-Bit Transmit (Even Byte Case)
CLIENTEMAC#TXCLIENTCLKIN
PHYEMAC#MIITXCLK
(CLIENTEMAC#TXCLIENTCLKIN/2)
CLIENTEMAC#TXD[15:0]
CLIENTEMAC#TXDVLD
EMAC#CLIENTTXACK
CLIENTEMAC#TXUNDERRUN
DA SA DATA
EMAC#CLIENTTXCOLLISION
EMAC#CLIENTTXRETRANSMIT
CLIENTEMAC#TXDVLDMSW
CLIENTEMAC#TXFIRSTBYTE
ug074_3_13_080705
EMAC#PHYTXCHARISK
(SGMII or 1000BASE-X
PCS/PMA only)
EMAC#PHYTXCHARDISPMODE
(SGMII or 1000BASE-X
PCS/PMA only)
EMAC#PHYTXD[7:0]
(SGMII or 1000BASE-X
PCS/PMA only)
/T/ /R/
PRE
/S/
/I1/ /I2/ /I2/ /I2/ /I2/
FCS
SFD
/I1/
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Xilinx Virtex-4 Specifications

General

Brand	Xilinx
Model	Virtex-4
Category	Motherboard
Language	English