Processor; I2C Serial Interface And Devices - SMART Embedded Computing MVME7100ET Installation And Use Manual

4.3

Processor

The MVME7100ET is designed to support the MC864xD (dual e600 core) processor. The
processor is configured to operate at 1.067GHz or 1.33GHz core frequency with a
corresponding DDR400 Mb or DDR533 DDR2 memory bus.
The MVME7100ET 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 MC864xD reference manual, listed in
Documentation on page
details and/or programming information.
2
4.4 I C Serial Interface and Devices
The MVME7100ET provides the following on-board I
MC864xD I
 8 KB serial EEPROM for VPD

Two 64 KB serial EEPROMs for user configuration data storage
 Two 256 byte serial EEPROMs for SPD
 Maxim DS1375 Real Time Clock
 On-Semi ADT7146 temperature sensor
 8 KB serial EEPROM on RTM VPD
The RTC implemented on the MVME7100ET provides an alarm interrupt routed to the
MC864xD 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 On-Semi digital temperature sensor measures of temperature of the board and also
connects to the temperature diode on the MC864xD. The temperature sensor also provides
an alarm interrupt routed to the MC864xD 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.
For programming information, see the MVME7100ET Single Board Computer
Programmer's Reference.
MVME7100ET Single Board Computer Installation and Use (6806800K87G)
109, and
2
C controller 0 interface:
Manufacturers' Documents on page 109
2
C serial devices connected to the
Functional Description
Appendix B, Related
for additional
Chapter 5, Transition Module for
71