Changes between Version 4 and Version 5 of HardwareUsersGuides/FPGABoard_v2.2/Ethernet

Timestamp:

Sep 9, 2009, 2:29:12 PM (15 years ago)

Author:

sgupta

Comment:

--

HardwareUsersGuides/FPGABoard_v2.2/Ethernet

@@ -3 +3 @@
 == WARP FPGA Board Ethernet ==
 
-The FPGA Board has one 10/100/1000 Ethernet device present. The design uses the [http://www.marvell.com/files/products/transceivers/singleport/Alaska_SinglePort_88E1111.pdf Marvell 88e1111 Gigabit Ethernet PHY]. The Marvell PHY implements all the physical layer functionality and the Virtex-4 FPGA uses one of the hardened Tri-mode Ethernet MAC for the MAC layer.
+The FPGA Board has one 10/100/1000 Ethernet device present. The design uses the [http://www.marvell.com/files/products/transceivers/singleport/Alaska_SinglePort_88E1111.pdf Marvell 88e1111 Gigabit Ethernet PHY]. The Marvell PHY implements all the physical layer functionality and the Virtex-4 FPGA uses one of the hardened Tri-mode Ethernet MAC for the MAC layer. Any MAC layer implementation in the Virtex-4 utilizes the hard TEMAC and the soft [http://www.xilinx.com/support/documentation/ip_documentation/xps_ll_temac.pdf LocalLink TEMAC].
 
 [[Image(HardwareUsersGuides/FPGABoard_v2.2/Files:FPGA_Board_Ethernet.jpg)]]
@@ -17 +17 @@
 || 1000 || Red || Indicates negotiated speed of 1 Gbps ||
 
-
+The auto-negotiated speeds are between the physical layers of the two Ethernet devices. The Ethernet MAC must still be informed of the correct speed to use or the auto-negotiation callback must be implemented. 
 
 == FPGA Constraints ==