Datasheet on Opsero Docs

Overview

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Description

The Robust Ethernet FMC (FPGA Mezzanine Card) is an add-on/expansion board for FPGA and SoC based development boards. The mezzanine card has 4x Marvell 88E151x Gigabit Ethernet PHYs to provide 4 ports of gigabit Ethernet connectivity to the carrier development board.

Pin Configuration

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Pinout table

The Ethernet FMC has a low pin count FPGA Mezzanine Card (FMC) connector, providing the connections to the FPGA on the development board. The following table defines the pinout of the FMC connector and applies to both the Ethernet FMC and the Robust Ethernet FMC .

Specifications

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Recommended Operating Conditions

SUPPLY VOLTAGE	MIN	TYP	MAX	UNIT
12 VDC	+11.4	+12	+12.6	V
3.3 VDC	+3.14	+3.3	+3.46	V
VADJ 2.5VDC	+2.38	+2.5	+2.62	V
VADJ 1.8VDC	+1.71	+1.8	+1.89	V

Power Consumption

The specifications below refer to the total current draw on each of the power supplies while the Ethernet FMC is connected to a development board and operating at 100% channel utilization.

Detailed Description

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Hardware Overview

The figure below illustrates the various hardware components that are located on the top-side of the Robust Ethernet FMC.

Mechanical Information

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Height Profile

The figure below illustrates the height profile of the Robust Ethernet FMC. All of the components on the Robust Ethernet FMC fit within the 10mm gap between the FMC card and the development board. It was designed this way to allow it to mate with all FMC carrier boards, including those that provide a dedicated area for fixing the FMC to the carrier by means of the 4 hex standoffs.

Compatible Boards

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This section of the documentation aims to list all of the development boards for which compatibility with the Robust Ethernet FMC has been checked, and to list constraints and any notes concerning special requirements or limitations with the board.

Board Revision History

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Rev A

Date of first manufacture: 2015-06-10
First board release
RJ45 part Amphenol RJE72-488-1401 (no LEDs)
Uses dual color LEDs Avago HSMF-C157
4-layer PCB design

Rev B

Date of first manufacture: 2016-02-12
Changed 125MHz oscillator to Micrel MEMS part DSC1121DI2-125.0000T to replace obsolete On Semi part NBXDPA019LNHTAG (device with CMOS outputs and 2.5mm x 2.0mm package)
Removed FSEL option - consequence of the oscillator part change
Added buffer to CLK_EN input to allow it to be driven at 1.8V
Removed the solder jumpers for FSEL and CLK_EN
RJ45 part changed to Amphenol RJE72-488-1451 (with LEDs)
Removed Avago HSMF-C157 dual color LEDs

This revision was never released due to procurement difficulty of the Micrel MEMS part. It was mistakenly designed for CMOS device DSC1121DI2-125.0000T which was available at the time, however in order to satisfy the VITA 57.1 standard the device used should have had LVDS outputs. The Micrel part variant with LVDS outputs was not procurable in the same package at that time, so we did not release Rev-B and we incorporated the package and device change in Rev-C.