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Registered: ‎01-03-2019

Tri-mode Ethernet Mac

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I plan on using the Tri-mode Ethernet Mac v9.0 in my latest design. However I also had the spec for an older MAC v5.5. On page 6 of this guide, shown below, I am concerned with note 3, “For Virtex-7, Kintex-7 and Artix-7 devices, it is I/O dependant with HR I/O supporting MII/GMII at 3.3V or lower and RGMII at 2.5V or lower and HP I/O only supporting 1.8V or lower ”. The Tri-mode Ethernet Mac v9.0 guide does not have this note. I am using a Kintex-7, HR I/O at 3.3V and I wanted to used RGMII. Is this possible with the latest Ethernet Mac core v9.0?

 

LogiCORE IP Facts Table

Core Specifics

Supported

Device Family(1)

Zynq™-7000(2), Virtex®-7, Kintex™-7, Artix™-7,

Virtex-6, Spartan-6(3)

Supported User

Interfaces

AXI4-Lite, AXI4-Stream

Resources See Table 2-2 to Table 2-4.

Provided with Core

Design Files

ISE®: NGC netlist

Vivado™: Encrypted RTL

Example Design VHDL and Verilog

Test Bench Demonstration Test Bench

Constraints File

ISE: UCF

Vivado: XDC

Simulation

Model

Verilog and/or VHDL Behavioral Model

Supported S/W

Driver

N/A

Tested Design Flows(4)

Design Entry

ISE Design Suite 14.4

Vivado Design Suite 2012.4(5)

Simulation

Mentor Graphics ModelSim

Cadence Incisive Enterprise Simulator (IES)

Synopsys VCS and VCS MX

Synthesis

Xilinx Synthesis Technology (XST)

Vivado Synthesis

Support

  1. For a complete listing of supported devices, see the release

notes for this core.

     2. Supported in ISE Design Suite implementations only.

     3. Virtex-6 devices support GMII and MII at 2.5V only; see

[Ref 1] for more information. For Virtex-7, Kintex-7 and

Artix-7 devices, it is I/O dependant with HR I/O supporting

MII/GMII at 3.3V or lower and RGMII at 2.5V or lower and HP

I/O only supporting 1.8V or lower.

     4. For the supported versions of the tools, see the Xilinx Design

Tools: Release Notes Guide.

     5. Supports 7 series devices only.

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584 Views
Registered: ‎11-09-2017

Re: Tri-mode Ethernet Mac

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Hi 

Tri-Mode Ethernet MAC v9.0 supported device families are UltraScale+, UltraScale, Zynq -7000, 7 Series.

For 7 series and Zynq-7000 families, the voltage standard used depends on the type of I/O used: HR I/O supports RGMII at 2.5V or lower and HP I/O only supports 1.8V or lower. Despite this being the defined RGMII voltage, most PHYs require 2.5V and therefore an external voltage converter is required to interoperate with any multi-standard PHY when using 7 series HP I/O.

Regards
Pratap

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Moderator
Moderator
585 Views
Registered: ‎11-09-2017

Re: Tri-mode Ethernet Mac

Jump to solution

Hi 

Tri-Mode Ethernet MAC v9.0 supported device families are UltraScale+, UltraScale, Zynq -7000, 7 Series.

For 7 series and Zynq-7000 families, the voltage standard used depends on the type of I/O used: HR I/O supports RGMII at 2.5V or lower and HP I/O only supports 1.8V or lower. Despite this being the defined RGMII voltage, most PHYs require 2.5V and therefore an external voltage converter is required to interoperate with any multi-standard PHY when using 7 series HP I/O.

Regards
Pratap

Please mark the Answer as "Accept as solution" if information provided is helpful.

Give Kudos to a post which you think is helpful.
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