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