Xilinx UG492 Manual do Utilizador descarregar pdf (Página 114)

114 www.xilinx.com Ethernet AVB Endpoint User Guide

UG492 July 23, 2010

Chapter 12: System Integration

Because the TEMAC core can often be used in different clocking modes, note the following:

• The Ethernet transmitter client clock domain must always be connected to the

tx_clk input of the Ethernet AVB Endpoint core. Additionally, the transmitter clock

enable, as used with the TEMAC, must always be connected to the tx_clk_en input

of the Ethernet AVB Endpoint core.

• The Ethernet receiver client clock domain must always be connected to the rx_clk

input of the Ethernet AVB Endpoint core. Additionally, the receiver clock enable, as

used with the TEMAC, must always be connected to the rx_clk_en input of the

Ethernet AVB Endpoint core.

• The host_clk inputs of the Ethernet AVB Endpoint and of the TEMAC must always

share the same clock source. If desired, this can also be the clock source used for the

PLB interface.

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Xilinx UG492 Manual do Utilizador Página 114