Intel ZT 7102 manual Hardware Specifications, Overview

Intel® NetStructureTMZT 7102 Chassis Management Module

Hardware Specifications

2.0Hardware Specifications

2.1Overview

The chassis management module (CMM) is intended to operate as a chassis management building block in a CompactPCI chassis. The CMM uses a unique backplane interface pinout and requires a dedicated slot within the chassis.

Caution: The ZT 7102 plugs into a dedicated chassis management slot. System components will be damaged if a standard 3U board is plugged into the chassis management slot.

Intelligent Platform Management Buses (IPMBs) are the primary management connection between components. A unique star topology radiating from the CMMs is used to provide reliability, flexibility and security. In some cases, direct logic is used to support non-intelligent devices and to eliminate active components on the backplane and chassis.

The CMM provides 30 master/slave two-wire serial bus (2WSB) interfaces. The 2WSBs are electrically equivalent to I2C*. As such, all outputs are open drain, so they are driven low and passively pulled high. The 2WSB interfaces support multi-master operation on the bus, however they do not support being the target of a read transaction from another master device. The 2WSB interfaces are used by the CMM as IPMBs or non-intelligent management busses. Refer to the individual sections for specific usage information. The 2WSB interfaces are used for:

•Up to 21 general-purpose slots (21 independent 2WSBs, 2WSB_S0 - 2SB_S20)

•Power supplies (two buses, 2WSB_PS0 and 2WSB_PS1)

•Fan trays (one bus, 2WSB_FT)

•Chassis sensors (one bus, 2WSB_CS)

•Chassis FRU modules (two independent buses, 2WSB_CF0 and 2WSB_CF1)

•Redundant CMM link (one bus for bi-directional communication, 2WSB_RCMM)

Technical Product Specification 17