Emerson MVME2500 manual Reset/Control FPGA, Power Management, Onboard Voltage Supply Requirement

Models: MVME2500

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Functional Description

The RTM I2C address can be configured by the user and should not contain duplicate addresses to avoid conflict. For more information, see I2C Bus Device Addressing, on page 118.

4.14Reset/Control FPGA

The FPGA provides the following functions:

Power control and fault detection

Reset sequence and reset management

Status and control registers

Miscellaneous control logic

Watchdog timer

32-bit Tick Timer

Clock generator

Switch decoder and LED controller

4.15Power Management

The MVME2500 backplane is utilized to derive +3.3V, +2.5V, +1.8V, +1.5V, +1.2V, +1.05V voltage rail. Each voltage rail is controlled by the FPGA through an enable pin of the regulator, while the output is monitored through power good signal. If a voltage rail fails. the FPGA will disable each supply. To restart the system, the chassis power switch must be powercycled.

4.15.1 Onboard Voltage Supply Requirement

The onboard power supply is considered to be out of regulation if the output voltage level is below the minimum required power or goes beyond the maximum.

Table 4-1 Voltage Supply Requirement

 

Voltage Rail Requirement

 

 

 

 

Voltage Rail

Minimum

Maximum

 

 

 

+3.3 V

3.15 V

3.45 V

 

 

 

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MVME2500 Installation and Use (6806800L01H)

Page 74
Image 74
Emerson MVME2500 Reset/Control FPGA, Power Management, Onboard Voltage Supply Requirement, 1 Voltage Supply Requirement