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ATCA-F125 (6873M Artwork) Installation and Use (6806800J94N)
Functional Description
Functional Description
4.7
Base Channel Interface
The Broadcom BCM56334 switch device provides 24 10/100/1000 Mbps ports and four
10G stacking ports. The BCM56334 supports advanced Layer2 switching, L3 routing, ACL
and key carrier protocols. The PCI Express 1x interface of the Broadcom BCM56334 is
attached to one of the PCI Express ports of the P2020 QorIQ Integrated Processor to
provide the service processor configuration and management capability to the switch as
well as to provide full access to the BCM56334 switch traffic. A block diagram of the base
channel interconnect is shown in
Figure 4-5
.
Some of the 1GbE SGMII ports from the BCM56334 have the option of being routed
through muxes to different destinations as seen in the block diagram above (for example,
to ToPSync or RTM). The select pins for these mux/demux switches are located in the
FGPA to route the SGMII ports to the desired destination. FPGA registers can be accessed
through two different methods:
1. Through the P2020 local bus interface, the service processor can program registers in
the FPGA
2. Through the IPMI controller private I2C bus, the IPMC controller can set the various
mux select before enabling reset on the remainder to the payload.
Figure 4-5 Base Channel Block Diagram
