CMAC/GT Selections and Configuration Tab - 3.1 English

UltraScale+ Devices Integrated 100G Ethernet Subsystem LogiCORE IP Product Guide (PG203)

Document ID
PG203
Release Date
2024-07-17
Version
3.1 English

This CMAC/GT Selection and Configuration tab, shown in the following figure, is used to configure transceiver resources. The window loads with default values that are pre-populated.

Figure 1. CMAC/GT Selections and Configuration Tab

The following table describes the GT Selection and Configuration tab options.

Table 1. GT Selections and Configuration Tab
Parameter Description Default Value Range
GT Location
GT Location Selection Select whether the GT IP is included in the core or in the example design Include GT subcore in core

Include GT subcore in core

Include GT subcore in example design

CMAC Lane to Transceiver Association
CMAC Core Selection Select 100G Ethernet Hard IP core location Based on the FPGA, part number, CMAC Mode and GT type selected Based on the FPGA, part number, CMAC Mode and GT type selected, all the usable/configurable 100G Ethernet IP cores for that particular device/package will be listed.
GT Group Selection Select the GT Group

Based on the FPGA, part

number, CMAC Mode, GT type selected and also based on GT selection guidelines

Based on the FPGA, part

number, CMAC Mode, GT type selected and also based on GT selection guidelines.

Lane-00 to Lane-09 Auto fill GT lanes based on the GT Group selected The best combination of transceivers will be auto filled based on the 100G Ethernet IP core location chosen Based on the Mode selection (CAUI-10, CAUI-4, 100GAUI-2, or Runtime Switchable), the GT selection guidelines are followed. See 1588v2 Timestamping Transceiver Selection Rules for more details.
Shared Logic
Include Shared Logic in Determines the location of the transceiver shared logic Core

Core

Example Design

Advanced Options
Receiver
RX Insertion Loss at Nyquist (dB)

Specify the insertion loss of the channel between the transmitter and receiver at the Nyquist frequency in dB.

  • This option is available for Duplex and Simplex RX operation.
12 Depends on GT
RX Equalization Mode

When Auto is specified, the equalization mode implemented by the Wizard depends on the value specified for insertion loss at Nyquist. Refer to UG576/UG578 to determine the appropriate equalization mode for your system.

  • This option is available for Duplex and Simplex RX operation. This feature is selected as Auto with grayed out for the GTM transceiver type.
Auto

Auto

DFE

LPM

Clocking Options
RX GT Buffer

Controls whether the GT receiver elastic buffer bypass operates in multi-lane mode or single-lane mode.

  • This option is available for Duplex and Simplex RX operation. This feature is not applicable for the GTM transceiver type.
Enable

Enable

Bypass

RX GT Buffer Bypass Mode

RX GT Buffer Bypass Mode.

RX GT Buffer Bypass Mode is Multi-Lane when the RX GT Buffer option is set to Enable.

RX GT Buffer Bypass Mode is Single-Lane when the RX GT Buffer option is set to Bypass.

  • This option is available for Duplex and Simplex RX operation. This feature is not applicable for the GTM transceiver type.
Multi-Lane

Multi-Lane

Single-Lane

GT QPLL
PLL Type

GT PLL Type

  • This feature is not applicable for the GTM transceiver type.
QPLL0

QPLL0

QPLL1

Others
Enable Pipeline Register Selecting this option will include one stage pipeline register between the CMAC core and the GT to ease timing. 0

0: Disable

1: Enable

Enable Additional GT Control/Status and DRP Ports Enable Additional GT Control/Status and DRP Ports 0

0: Disable

1: Enable