Xilinx LogiCORE Endpoint v2.4, User Manual

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Ethernet AVB Endpoint User Guide www.xilinx.com 41
UG492 September 21, 2010
EDK pcore Format
EDK pcore Format
Figure 5-2 illustrates 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.
X-Ref Target - Figure 5-2
Figure 5-2: Ethernet AVB Endpoint Core Block Diagram for Connection to the XPS Tri-Mode Ethernet MAC
(xps_ll_temac) in the EDK
Tx
Rx
PLB
Tx Ar b iter
Rx S plitter
PLB I/F PLB I/F
.c, .h
s oftw a re
driver s
Ethernet AVB Endpoint
AV
Tr a ffic
Tx
Rx
AV Traffic I/F
Tx Time S t a mp
Rx Time S t a mp
Re a l Time Co u nter
Tx PTP P a cket B u ffer
Rx PTP P a cket B u ffer
Preci s e Timin g Protocol (PTP)
Le g acy Traffic I/F
XP S Loc a lLink
Tri-Mode
Ethernet MAC
Av b 2Tem a cTxD a t a
Tx PHY
Rx PHY
Tem a c2Av b RxD a t a
Em b edded
Micro
Proce ss or
Leg a cy
Tr a ffic
PLB
Av b 2Tem a cRxD a t a
Tem a c2Av b TxD a t a