GT Selection and Configuration Tab - 3.3 English

40G/50G High Speed Ethernet Subsystem v3.3 Product Guide (PG211)

Document ID
PG211
Release Date
2023-11-01
Version
3.3 English

The GT Selection and Configuration tab enables you to configure the serial transceiver features of the core.

Figure 1. GT Selection and Configuration Tab for UltraScale/UltraScale+
Figure 2. GT Selection and Configuration Tab for Versal Adaptive SoC
Table 1. GT Clocks Options
Option Values Default
GT Location
Select whether the GT IP is included in the core or in the example design Include GT subcore in core

Include GT subcore in example design

Include GT subcore in core
GT Clocks 3
GT RefClk (In MHz) 1 161.1328125 161.1328125
195.3125
201.4160156
257.8125
322.265625
312.5
156.25
GT DRP Clock (In MHz) 10.00 - 250.00 MHz 100.00
Core to Transceiver Association
GT Type GTH, GTY, and GTM, GTYP GTY
GT Selection Options based on device/package quad groups. For example:

Quad X0Y1

Quad X0Y2

Quad X0Y3

GTM_DUAL_X0Y0

If the GT type is selected as GTM, the GTM Dual List is available for the selection. For example: GTM_DUAL_X0Y0

GTM_DUAL_X0Y1

Quad X0Y0
Lane-00 to Lane-03 Auto filled based on device/package.

For example, if Speed = 50G and Num of Cores = 2 (or Speed = 40G and Num of Cores = 1) and GT selection = Quad X0Y1, the four GT lanes are:

X0Y4

X0Y5

X0Y6

X0Y7

RX Equalization Mode Auto LPM DFE Auto
RX Insertion Loss at Nyquist (dB) Depends on the GT Wizard 30
Others
Enable Pipeline Register 0, 1 0
Enable Additional GT Control and Status Ports 0, 1 0
  1. This list provides frequencies used for the default configurations. See Vivado IDE in the latest version of the tools for a complete list of supported clock frequencies for different speeds.
  2. Only applicable for GTM. For 40G GTM, two consecutive duals need to be selected.
  3. Supported GT clocks:
    1. 40G supports 156.25, 103.125, 128.90625, 156.25, 161.1328125, 206.25, 257.8125, 309.375, 312.5, and 322.265625 GT RefClk frequencies (in MHz).
    2. 50G supports 161.1328125, 161.1328125, 156.25, 312.5, 195.3125, 201.4160156, 257.8125, 322.265625 GT RefClk frequencies (in MHz).
    3. 50G GTM (UltraScale+ devices) supports 161.1328125, 156.25, 161.1328125, 195.3125, 201.4160156, 257.8125, 322.265625 GT RefClk frequencies (in MHz).
    4. Runtime switching feature supports 128.90625, 128.90625, 206.25, 257.8125, 156.25, 312.5, 161.1328125 and 322.265625 gt_refclk frequencies for Versal devices and 161.1328125 gt_refclk frequency for non-Versal devices (in MHz).