CPC324 Functional Blocks
27
Gigabit Ethernet Switch
The Ethernet connectivity of the CPC324 is shown in
Figure 2-3, “Ethernet Block Diagram,”
below.
Figure 2-3:
Ethernet Block Diagram
The CPC324 uses an 8-port, gigabit Ethernet switch, implementing seven ports of IP
connectivity between the processor, the two PTMC mezzanines, the two PICMG 2.16 link ports
(or rear I/O) and the management port. The Broadcom BCM5388 is used for this function. The
BCM5388 integrates the switch with four 10/100/1000 Mbps PHYs and four RGMII ports. A
short feature list of this switch includes:
•
3.5Mb on-chip packet control buffer to aid in the non-blocking, wire speed operation
•
Jumbo frames support up to 9728 bytes
•
4K unicast addresses
•
4K 802.1Q Tag VLANs
•
MAC-based trunking
•
Port, DiffServ, Weighted/Strict priority, and 802.1p-based QoS for four queues
•
Port mirroring support
•
Integrated SPI interface for light management
Table 2-3, “BCM5288 Port Mapping,”
identifies the port mapping.
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