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40 www.xilinx.com Ethernet AVB Endpoint User Guide
UG492 July 23, 2010
Chapter 5: Core Architecture
Standard CORE Generator Format
Figure 5-1 illustrates the functional blocks of the Ethernet AVB Endpoint core when it is
generated in standard CORE Generator format. As illustrated, this is intended to be
connected to the LogiCORE IP Tri-Mode Ethernet MAC (or to the LogiCORE IP Embedded
Ethernet Wrappers available in certain Virtex devices).
Each of the functional blocks illustrated will be introduced in the following sections of this
chapter. However, observe from the figure that:
• The Host I/F (management interface) of the Tri-Mode Ethernet MAC is connected
directly to the Ethernet AVB Endpoint LogiCORE IP. This enables the MAC to be fully
configured via the “PLB Interface” of the Ethernet AVB Endpoint core.
• The core provides two independent full-duplex interfaces for customer logic: the “AV
Traffic Interface” and the “Legacy Traffic Interface”.
• The “Legacy Traffic Interface” contains “MAC Header Filters”; these are provided to
replace the Address Filter functionality of the LogiCORE IP Tri-Mode Ethernet MACs
(which must be disabled).
X-Ref Target - Figure 5-1
Figure 5-1: Ethernet AVB Endpoint Core Block Diagram for Connection to LogiCORE IP Tri-Mode Ethernet
MAC
Tx
Rx
PLB
Tx Arbiter
Rx Splitter
PLB I/F
PLB I/F
MAC Header Filters
.c, .h
software
drivers
Ethernet AVB Endpoint
AV
Traffic
Tx
Rx
AV Traffic I/F
Tx Time Stamp
Rx Time Stamp
Real Time Counter
Tx PTP Packet Buffer
Rx PTP Packet Buffer
Precise Timing Protocol (PTP)
Legacy Traffic I/F
Tri-Mode
Ethernet
MAC
Tx Client Tx PHY
Rx PHYRx Client
Embedded
Micro
Processor
Legacy
Traffic
Host I/F