OBUFDS_GTE5 - 2025.1 English - Primitive: Gigabit Transceiver Buffer

Primitive: Gigabit Transceiver Buffer

PRIMITIVE_GROUP: ADVANCED
PRIMITIVE_SUBGROUP: GT

Introduction

OBUFDS_GTE5 is the gigabit transceiver output pad buffer component in Versal devices. The REFCLK signal should be routed to the dedicated reference clock output pins on the serial transceiver, and the user design should instantiate the OBUFDS_GTE5 primitive in the user design. See the Versal Adaptive SoC Transceivers Architecture Manual for more information on PCB layout requirements, including reference clock requirements.

Port Descriptions

Port	Direction	Width	Function
CEB	Input	1	Reference the Versal Adaptive SoC Transceivers Architecture Manual for more information
I	Input	1	Reference the Versal Adaptive SoC Transceivers Architecture Manual for more information
O	Output	1	Reference the Versal Adaptive SoC Transceivers Architecture Manual for more information
OB	Output	1	Reference the Versal Adaptive SoC Transceivers Architecture Manual for more information

Design Entry Method

Instantiation	Yes
Inference	No
IP and IP Integrator Catalog	Recommended

Available Attributes

Attribute	Type	Allowed Values	Default	Description
REFCLK_EN_DRV	BINARY	1'b0 to 1'b1	1'b1	Reference the Versal Adaptive SoC Transceivers Architecture Manual for more information
REFCLK_EN_TX_PATH	BINARY	1'b0 to 1'b1	1'b1	Reference the Versal Adaptive SoC Transceivers Architecture Manual for more information

VHDL Instantiation Template

Unless they already exist, copy the following two statements and paste them before the entity declaration.

Library UNISIM;
use UNISIM.vcomponents.all;


-- OBUFDS_GTE5: Gigabit Transceiver Buffer
--              Versal Premium Series
-- Xilinx HDL Language Template, version 2025.1

OBUFDS_GTE5_inst : OBUFDS_GTE5
generic map (
   REFCLK_EN_DRV => '1',     -- Reference the Versal Adaptive SoC Transceivers Architecture Manual for more information
   REFCLK_EN_TX_PATH => '1'  -- Reference the Versal Adaptive SoC Transceivers Architecture Manual for more information
)
port map (
   O => O,     -- 1-bit output: Reference the Versal Adaptive SoC Transceivers Architecture Manual for more information
   OB => OB,   -- 1-bit output: Reference the Versal Adaptive SoC Transceivers Architecture Manual for more information
   CEB => CEB, -- 1-bit input: Reference the Versal Adaptive SoC Transceivers Architecture Manual for more information
   I => I      -- 1-bit input: Reference the Versal Adaptive SoC Transceivers Architecture Manual for more information
);

-- End of OBUFDS_GTE5_inst instantiation

Verilog Instantiation Template


// OBUFDS_GTE5: Gigabit Transceiver Buffer
//              Versal Premium Series
// Xilinx HDL Language Template, version 2025.1

OBUFDS_GTE5 #(
   .REFCLK_EN_DRV(1'b1),     // Reference the Versal Adaptive SoC Transceivers Architecture Manual for more information
   .REFCLK_EN_TX_PATH(1'b1)  // Reference the Versal Adaptive SoC Transceivers Architecture Manual for more information
)
OBUFDS_GTE5_inst (
   .O(O),     // 1-bit output: Reference the Versal Adaptive SoC Transceivers Architecture Manual for more information
   .OB(OB),   // 1-bit output: Reference the Versal Adaptive SoC Transceivers Architecture Manual for more information
   .CEB(CEB), // 1-bit input: Reference the Versal Adaptive SoC Transceivers Architecture Manual for more information
   .I(I)      // 1-bit input: Reference the Versal Adaptive SoC Transceivers Architecture Manual for more information
);

// End of OBUFDS_GTE5_inst instantiation

Related Information

Versal Adaptive SoC GTY and GTYP Transceivers Architecture Manual (AM002)

OBUFDS_GTE5 - 2025.1 English - Primitive: Gigabit Transceiver Buffer - UG1485