101
Tsi574 User Manual
June 6, 2016
Integrated Device Technology
www.idt.com
5. Multicast
This chapter describes the multicast features of the Tsi574. It includes the following information:
•
•
“Multicast Behavior Overview” on page 104
•
“Multicast Group Tables” on page 108
•
“Multicast Work Queue” on page 105
•
“Broadcast Buffers” on page 105
•
“Error Management of Multicast Packets” on page 116
•
5.1
Overview
The Tsi574 multicast functionality is compliant to the
RapidIO Version 1.3 Part 11 Multicast
Specification
.
5.1.1
Multicast Operation
In a multicast operation, packets are received at the speed of any ingress port (up to 10 Gbits/s) and
broadcast at the speed of the egress ports (up to 10 Gbits/s for a 4x mode port operating at
3.125 Gbits/s) to multiple ports capable of accepting packets for transmission.
Packets are routed to the multicast engine based on their destinationID and Transaction Type (TT) field
value. If no match is found for the destinationID and TT field, then the ingress lookup tables are used to
route the packet. A maximum of eight different DestID/TT field combinations can be routed to the
multicast engine. Each destinationID/TT set can be multicast to a different set of egress ports. A set of
egress ports that packets are multicast to is called a multicast group and is represented by the multicast
mask in the group table. A multicast packet is never sent out on the port that it was received on. Any
number of ports can share the same multicast group.
Multicast packets are accepted by egress ports based on priority. In the event that multicast and unicast
traffic are competing for resources in the egress port, multicast specific egress arbitration can be used
to favour multicast or unicast traffic. This allows a group of endpoints that need to multicast to each
other to share the same multicast mask.
5.1.2
Features
The Tsi574 supports multicast packet replication in accordance with
RapidIO Specification Version
1.3, Part 11 Multicast
.
Содержание IDT Tsi574
Страница 1: ...IDT Tsi574 Serial RapidIO Switch User Manual June 6 2016 Titl...
Страница 20: ...About this Document 20 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 34: ...1 Functional Overview JTAG Interface 34 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 100: ...4 Internal Switching Fabric Packet Queuing 100 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 224: ...11 Signals Pinlist and Ballmap 224 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 490: ...B Clocking P_CLK Programming 490 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 512: ...Index 512 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...