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Chapter 5 Hardware Architecture 5-5
5.4 Networking and I/O
Networking and I/O are provided by the following chips and interconnects:
■ nVidia MCP55 (southbridge)
■ PCI Express Bus
■ Dual BIOS
■ Trusted Platform Module
■ Broadcom 5715C Gbit Ethernet chip
■ Sun Sun 10 GbE Multithreaded Networking ASIC Dual 10-Gbit + Dual 1-Gbit
Ethernet chip
5.4.1 nVidia MCP55
The nVidia MCP55 media and communication processors (MCP) are based on a
high-performance, scalable architecture with a low power design and low footprint
optimized for power-constrained rack and blade servers. nVidia’s HyperTransport
design integrated tightly with the AMD Opteron Direct Connect architecture to
deliver 32-bit and 64-bit performance.
The Sun Netra CP3220 blade server uses one nVidia MCP55 for:
■ 8 lanes of PCIe to the Zone 3 Connectors
■ 8 lanes of PCIe to Sun 10 GbE Multithreaded Networking ASIC
■ 4 lanes of PCIe to the base fabric
■ 4 lanes of PCIe to each AMC slot
■ ATA controller to the compact flash slot
■ 2 USB ports
■ Low Pin Count (LPC) bus to the BIOS chips, H8 and TPM
■ 2 RGMII ports to the front panel and RTM for serial management