Emerson AXP 1410, Installation And Use Manual

Page: 168 / 204

Shelf Management Alarm Module
AXP 1410 Installation and Use (6806800H70F )
168
8.3 Shelf Management Controller
The ShMC part is derived from Emerson's IPMC building block and consists of two coupled
microcontrollers:
z
IPMC Master Controller (IMC) based on an ATmega2560
z
IPMC Slave Controller (ISC), based on an ATmega168
8.3.1 IPMB0 Interface
IPMB0-A is connected to the I
2
C controller of the IMC, IPMB0-B to the I
2
C controller of the ISC
of the ShMC. Both microcontrollers have their own I
2
C controller and handle message
transmission and reception independently, including bus error handling and bus arbitration.
Received messages sent from both the IMC and the ISC channels are collected by the IMC. The
IMC dispatches messages which have to be sent either to its own I
2
C interface or to the ISC for
transmission.
8.3.2 IPMC Standard Functions
The standard functionality of the Emerson IPMC is available on the IPMC of the SAM1410. Refer
Supported Commands and FRU Information and Sensor Data Records of SAM1410 Installation and
Use manual, for further information.