Xilinx LogiCORE 1000BASE-X User Manual page 189

Integrating with the Tri-Mode Ethernet MAC Core
brefclkp
IPAD
IPAD
brefclkn
Tri-Speed
Ethernet
MAC
LogiCORE
txgmiimiiclk
rxgmiimiiclk
clientemacrxenable
clientemactxenable
speedis10100
speedis100
emacphytxd7:0]
emacphytxen
emacphytxer
phyemacrxd[7:0]
phyemacrxdv
phyemacrxer
emacphymclkout
phyemacmdin
emacphymdout
emacphymdtri
corehassgmii
Figure 13-7: Tri-Speed Ethernet MAC Extended to use an SGMII in Virtex-II Pro
Ethernet 1000BASE-X PCS/PMA or SGMII v9.1
UG155 March 24, 2008
IOB LOGIC
IBUFGDS
brefclk (62.5MHz)
DCM
BUFG
userclk (62.5MHz)
CLKIN CLK0
BUFG
FB
userclk2 (125MHz)
CLK2X180
component_name _block
(Block Level from example design)
SGMII Adaptation
module
sgmii_clk_en
sgmii_clk_r
NC
speed_is_10_100
speed_is_100
gmii_txd_in[7:0]
gmii_tx_en_in
gmii_tx_er_in
gmii_rxd_out[7:0]
gmii_rx_dv_out
gmii_rx_er_out
no
connection
VCC
www.xilinx.com
Ethernet
1000BASE-X
PCS/PMA
or SGMII
LogiCORE
userclk
userclk2
clk125m
gmii_txd_out[7:0]
gmii_txd[7:0]
gmii_tx_en_out
gmii_tx_en
gmii_tx_er_out
gmii_tx_er
gmii_rxd_in[7:0]
gmii_rxd[7:0]
gmii_rx_dv_in
gmii_rx_dv
gmii_rx_er_in gmii_rx_er
mdc
mdio_in
mdio_out
mdio_tri
Virtex-II Pro
RocketIO
(GT_CUSTOM)
brefclk
txusrclk
txusrclk2
RocketIO I/F
189
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