Техническая Спецификация для Intel C2338 FH8065501516761
Модели
FH8065501516761
Intel
®
Atom™ Processor C2000 Product Family for Microserver
September 2014
Datasheet, Vol. 2 of 3
Order Number: 330061-002US
207
Volume 2—Gigabit Ethernet (GbE) Controller—C2000 Product Family
Architectural Overview
11.5.13
SMBus and NC-SI Interface
The GbE controller provides two interfaces to connect to an external Baseboard
Management Controller (BMC). The board design can use either the System
Management Bus (SMBus) interface or the Network Controller Sideband Interface (NC-
SI). A SoC pin-based hard strap is used to designate which of the two interfaces is used
in the platform board design. See
11.5.13.1 SMBus 2.0
SMBus 2.0 is an optional interface for pass-through and/or configuration traffic
between an external BMC and the SoC integrated GbE controller. As an SMBus master,
the GbE controller provides the SMBus clock at 84 kHz, nominal. As a target, it
functions with an SMBus clock between 10 kHz and 100 kHz provided by the bus
master. Electrical and timing specifications are in
The SMBus channel behavior and the commands used to configure or read status from
the SoC integrated GbE controller are outlined in the Intel
®
Atom™ Processor C2000
Product Family Integrated GbE Controller Programmer’s Reference Manual (PRM).
The SoC GbE interface also enables reporting and controlling the device using the
Management Component Transport Protocol (MCTP) protocol over SMBus. The MCTP
interface is used by the BMC to control only the interface, not for pass-through traffic.
All network ports are mapped to a single MCTP endpoint on SMBus. For information,
refer to the PRM.