Motorola MVME3100 用户手册
MVME3100 Installation and Use (V3100A/IH1)
Chapter 4 Functional Description
40
Flash Memory
The MVME3100 provides one physical bank of soldered-on Flash memory. The bank is
composed of two physical Flash devices configured to operate in 16-bit mode to form a 32-bit
Flash bank. The default configuration for the MVME3100-1263 is 128MB using two 512Mb
devices, and for the MVME3100-1152 it is 64MB using two 256Mb devices.
composed of two physical Flash devices configured to operate in 16-bit mode to form a 32-bit
Flash bank. The default configuration for the MVME3100-1263 is 128MB using two 512Mb
devices, and for the MVME3100-1152 it is 64MB using two 256Mb devices.
Refer to the MVME3100 Single-Board Computer Programmer’s Reference Guide listed in
, for more information.
Control and Timers Logic
The MVME3100 control and timers logic resides on the local bus. This logic provides the
following functions on the board:
following functions on the board:
■
Local bus address latch
■
Chip selects for Flash banks and QUART
■
System Control and Status registers
■
Four 32-bit tick timers
■
Real-time clock (RTC) 1 MHz reference clock
Refer to the MVME3100 Single-Board Computer Programmer’s Reference Guide listed in
, for more information.
I
2
C Serial Interface and Devices
The MVME3100 provides the following on-board I2C serial devices connected to the MPC8540
I2C controller interface:
I2C controller interface:
■
8KB serial EEPROM for VPD
■
Two 64KB serial EEPROMs for user configuration data storage
■
256 byte serial EEPROM on SODIMM for SPD
■
Maxim DS1375 RTC
■
Maxim DS1621 temperature sensor
■
8KB serial EEPROM on RTM VPD
The Maxim DS1375 RTC implemented on the MVME3100 provides an alarm interrupt routed
to the MPC8540 programmable interrupt controller (PIC). A Maxim DS32KHz temperature
controlled crystal oscillator provides the RTC reference. A battery backup circuit for the RTC is
provided on board.
to the MPC8540 programmable interrupt controller (PIC). A Maxim DS32KHz temperature
controlled crystal oscillator provides the RTC reference. A battery backup circuit for the RTC is
provided on board.
The Maxim DS1621 digital temperature sensor provides a measure of the temperature of the
board.
board.