Xilinx UG492 manual EDK pcore Format

EDK pcore Format

EDK pcore Format

Figure 5-2illustrates the functional blocks of the Ethernet AVB Endpoint core when it is generated in EDK pcore format. As illustrated, this is intended to be connected to the XPS LocalLink Tri-Mode Ethernet MAC.

Each of the functional blocks illustrated will be introduced in the following sections of this chapter. However, observe from the figure that:

•The xps_ll_temac contains its own PLB interface. Consequently, the logic connecting the “PLB Interface” of the Ethernet AVB Endpoint core to the Host I/F (as seen in Figure 5-1) is not present in this case.

•The “Legacy Traffic Interface” of the Ethernet AVB Endpoint core is connected directly to the xps_ll_temac; this allows the xps_ll_temac core to source and sink legacy frame data, such as TCP/IP protocol traffic. The full duplex “AV Traffic Interface” remains for connection to custom logic.

•The “MAC Header Filters”, as seen in Figure 5-1, are not present in this case. The xps_ll_temac instead contains its own Address Filter logic.

							Ethernet AVB Endpoint
		AV
									Tx Arbiter	XPS LocalLink
	Traffic			AV Traffic I/F
		Tx								Tri-Mode
										Ethernet MAC
		Rx								Avb2TemacTxData
.c, .h
software
drivers										Temac2AvbRxData
					Precise Timing Protocol (PTP)
Embedded		PLB				Tx PTP Packet Buffer		Tx Time Stamp
Micro			PLB I/F
Processor								Real Time Counter		Tx PHY
						Rx PTP Packet Buffer
								Rx Time Stamp		Rx PHY

Legacy

Traffic

Legacy Traffic I/F

Rx Splitter

Tx

Rx

Avb2TemacRxData

Temac2AvbTxData

PLB

Figure 5-2:Ethernet AVB Endpoint Core Block Diagram for Connection to the XPS Tri-Mode Ethernet MAC

(xps_ll_temac) in the EDK

Ethernet AVB Endpoint User Guide www.xilinx.com 41

UG492 July 23, 2010