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IPMI Controller: SMB/IPMI Overview
Katana®752i User’s Manual 10006024-04
11-2
The Katana®752i system management interface uses the Zircon PM device’s general-pur-
pose input/output (GPIO) pins for the following functions:
• watchdog sensor input (from 750GL processor)
• GPIO (to 750GL processor)
• reset outputs (to 750GL processor)
• IPMI reset control
• cPCI Geographical Addressing inputs
The Zircon PM controller also has input pins to sense all on-board voltage supplies. Fig.11-1
on the following page shows a block diagram of the Intelligent Platform Management Bus
(IPMB) connections for the Katana®752i.
The Katana®752i system management features include two inter-integrated circuit (I2C)
interfaces, as follows:
• master/slave interface for 750GL communications
• master-only interface for accessing the temperature sensor readings and the two IPMI
read-only memory (ROM) devices