Processor; I2C Serial Interface And Devices - Emerson MVME4100 Installation And Use Manual

4.3

Processor

The MVME4100 is designed to support the MPC8548E processor. The processor is configured
to operate at 1.3 GHz core frequency with a corresponding 533 Mb DDR2 memory bus.
The MVME4100 supports the power-on reset (POR) pin sampling method for processor reset
configuration. The states of the various configuration pins on the processor are sampled when
reset is de-asserted to determine the desired operating modes. Combinations of pull-up and
pull-down resistors are used to set the options. Some options are fixed and some are selectable
at build time by installing the proper pull-up/pull-down resistor. Refer to the MPC8548E
reference manual, listed in
page 129 for additional details and/or programming information.
2
4.4 I C Serial Interface and Devices
The MVME4100 provides the following on-board I
MPC8548E I
8 KB serial EEPROM for VPD
Two 64 KB serial EEPROMs for user configuration data storage
One 256 byte serial EEPROM on SO-CDIMM for SPD
Maxim DS1375 Real Time Clock
Maxim MAX6649 temperature sensor
8 KB serial EEPROM on RTM VPD
The RTC implemented on the MVME4100 provides an alarm interrupt routed to the MPC8548E
PIC through the control PLD. A DS32KHz temperature controlled crystal oscillator provides the
RTC clock reference. A battery backup circuit for the RTC is provided on-board.
The Maxim digital temperature sensor measures of temperature of the board and also
connects to the temperature diode on the MPC8548E. The temperature sensor also provides
an alarm interrupt routed to the MPC8548E PIC through the control PLD.
2
The I C interface is routed to the P2 connector for access to the serial EEPROM located on the
transition module. The device address for the transition module serial EEPROM is user
selectable using the configuration switches. Refer to
information on the switches.
MVME4100 Single Board Computer Installation and Use (6806800H18D)
Appendix B, Related
2
C controller 0 interface:
Functional Description
Documentation, Manufacturers' Documents on
2
C serial devices connected to the
Chapter 5, Transition Module for
83