3.5Networking and I/O
Networking and I/O are provided by the following chips and interconnects:
■ICH9 I/O controller hub
■PCI Express Bus
■LPC bus interface
■Redundant BIOS
■Trusted Platform Module
■Broadcom 5715C Gbit Ethernet chip
■Sun 10 GbE Multithreaded Networking Technolgy Dual 10-Gbit + Dual 1-Gbit Ethernet chip
3.5.1ICH9 I/O Controller Hub
The ICH9 I/O provides legacy function support similar to that of previous ICH-family devices, but with extensions in Serial-ATA technology and 64-bit/66 MHz PCI-X support. The ICH9 I/O also includes integrated USB 2.0 and USB 1.0 support, an LPC interface, a system management interface, a power management interface, PECI interface, integrated Gigabit Ethernet controllers (not used on Sun Netra CP3250 blade server), and an integrated DMA controller.
3.5.2PCI Express Bus
PCI Express 1.0 (PCIe) is a high-speed, point-to-point dual simplex chip interconnect. It is the latest extension of the PCI bus. PCIe operates at 2.5 GHz and supports land widths of x1, x2, x4, x8, x16, and x32. Additional features include:
■Serial point-to-point interconnect between two devices
■Each lane supports two differential signal pairs, one pair for each data direction
■2.5-Gbyte/sec transfer rate
■Scalable performance based on the number of lanes implemented per interconnect
