Intel® Arria® 10 Transceiver PHY User Guide

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ID 683617
Date 3/28/2022
Public
Document Table of Contents

8.6.5. XCVR_A10_TX_SLEW_RATE_CTRL

Pin planner or Assignment Editor Name

Transmitter Slew Rate Control

Description

Specifies the slew rate of the output signal. The valid values span from the slowest rate to the fastest rate.

Note: Slew_R6 and Slew_R7 are not used.
Table 319.  Available Options

Value

Description

SLEW_R0 to SLEW_R5

R0 is the slowest rate. R5 is the fastest rate.

If QSF is not specified, the following table lists the default values.

Table 320.  Default Values

PCIe*

Value

Default Slew Rate

PCIe Gen1

SLEW_R4

PCIe Gen2

SLEW_R5

PCIe Gen3

SLEW_R5

Non-PCIe

Value

(VCCT/VCCR)

Default Slew Rate

Data rate < 1G Data rate ≥ 1G to < 3G Data rate ≥ 3G to < 6G Data rate ≥ 6G

0.95 V

SLEW_R0

SLEW_R2 SLEW_R3 SLEW_R5

1.03 V

SLEW_R1

SLEW_R3 SLEW_R4 SLEW_R5

1.12 V

SLEW_R2

SLEW_R4 SLEW_R5 SLEW_R5

Assign To

TX serial data pin.

Syntax

set_instance_assignment -name XCVR_A10_TX_SLEW_RATE_CTRL <value> -to <tx_serial_data pin name>

Note: Currently, the Quartus Prime software doesn't choose the default values for Non-PCIe mode. You must specify the setting in the .qsf file.

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