DisplayPort Intel® FPGA IP User Guide

ID 683273
Date 4/29/2022
Public

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4.3.2. Transceiver and Clocking

The device’s Gigabit transceivers operate at 5.4, 2.7, and 1.62 Gbps, and require a 135-MHz single reference clock. When the link rate changes, the state machine only reconfigures the transceiver PLL settings.

Table 16.   Arria V Transceiver Native PHY TX and RX SettingsThe table shows the Arria V Transceiver Native PHY settings for TX and RX using a single reference clock.

Parameters

Single Reference Clock Settings

Datapath Options

Enable TX datapath

On

Enable RX datapath

On

Enable standard PCS

On

Number of data channels

1, 2 or 4

Note: If you select 1 or 2, you must instantiate the PHY instance multiple times for all data channels as per maximum lane count parameter. These values are for non-bonded mode.
Bonding mode

×1* or ×N

Note: If you select ×1, you must instantiate the PHY instance multiple times for all data channels as per maximum lane count parameter. This value is for non-bonded mode.
Enable simplified data interface  

PMA

Data rate

1620 Mbps (when TX maximum link rate = 1.62 Gbps)

2700 Mbps (when TX maximum link rate = 2.7 Gbps)

5400 Mbps (when TX maximum link rate = 5.4 Gbps)

TX local clock division factor

1

TX PMA

Enable TX PLL dynamic reconfiguration

On

Number of TX PLLs

1

Main TX PLL logical index

0

Number of TX PLL reference clock

1

TX PLL0

PLL type

CMU

Reference clock frequency

135 MHz

Selected reference clock source

0

Selected clock network

×1 or ×N

Note: If you select ×1, you must instantiate the PHY instance multiple times for all data channels as per maximum lane count parameter. This value is for non-bonded mode.

RX PMA

Enable CDR dynamic reconfiguration On
Number of CDR reference clocks

1

Selected CDR reference clock

0

Selected CDR reference clock frequency

135 MHz

PPM detector threshold

1000 ppm

Enable rx_is_lockedtodata port

On

Enable rx_is_lockedtoref port

On

Enable rx_set_locktodata and rx_set_locktoref ports

On

Standard PCS

Standard PCS protocol mode

Basic

Standard PCS/PMA interface width

20

Byte Serializer and Deserializer

Enable TX byte serializer

Off (when symbol output mode is Dual)

On (when symbol output mode is Quad)

Enable RX byte deserializer

Off (when symbol output mode is Dual)

On (when symbol output mode is Quad)

Note: Currently, Arria V GX, Arria V GZ, and Stratix V devices support 5.4 Gbps operation.