Ethernet PRU_ICSSG instance-0 (PRU_ICSSG0) USAGE GUIDE

Table of Contents

• Introduction
• Platforms Supporting PRU_ICSSG0
• Configurations supported by PRU_ICSSG0
• Configuring PRU_ICSSG0 instance
• See Also

Introduction

AM243X is an extension of Sitara’s industrial-grade portfolio into high-performance microcontrollers. The AM243X device is built for industrial applications, such as motor drives and remote I/O modules, which require a combination of real-time communications and processing. The AM243X family provides scalable performance with up to two instances of Sitara’s gigabit TSN-enabled PRU_ICSSG. For more information, see Programmable Real-Time Unit Subsystem and Industrial Communication Subsystem - Gigabit (PRU_ICSSG) section in Processors and Accelerators chapter in the device TRM.

This is a guide to use PRU_ICSSG0 instance in PRU_ICSSG peripheral. On EVMs supported by TI (AM64X-EVM, AM243X-EVM), it is not possible use this, as the PRG0_RGMII1 and PRG0_RGMII0 pins are not connected to Ethernet PHYs on those EVMs. Would need a dedicated custom board to use this PRU_ICSSG0 instance of ICSSG peripheral. PRU_ICSSG1 instance of the ICSSG peripheral has no such limitations.

This is the setup guide to bring up PRU_ICSSG0 instance on your custom board or ICSSG0 enabled device.

On AM243X, we do not have out of the box support for ICSSG0.

• The PRU_ICSSG0 supported on AM243X SoC, but the standard issue TI EVMs and LaunchPads do not have board support.
• You can have PRU_ICSSG0 support with a custom board. Contact TI for more details and possibilities.

SoC Architecture and details.

Platforms Supporting PRU_ICSSG0

The driver is compatible for PRU_ICSSG0 and provides full support out of the box.

Parameter	Value
CPU + OS	r5fss0-0_freertos, r5fss0-0_nortos
Toolchain	ti-arm-clang
SoC	AM243X
Supported Board	Custom Board only*

Configurations supported by PRU_ICSSG0

PRU_ICSSG0 supports all modes and combinations supported by ENET-ICSSG driver. The follwing combinations are tested and verified.

Parameter	Value
CPU + OS	r5fss0-0_freertos, r5fss0-0_nortos
SoC	AM243X
MDIO modes	Normal mode, Manual
MII modes	MII, RGMII
MAC Modes	Dual MAC, Switch
LwIP compatible	YES

Configuring PRU_ICSSG0 instance

• In Sysconfig, in the ENET (ICSS) module under TI Networking section, set the instance option to select the ICSSG0.

ICSSG0 System Configuration.

• In the same module mentioned above, set the MII/RGMII option which the custom board's PHY supports.

ICSSG0 System Configuration.

• In the same module, find the EMAC Mode, and select either Dual MAC or Switch operation based on application.
• In Sysconfig, in the ENET (ICSS) module under TI Networking section, in the Board config drop down options, find the custom board checkbox option. Please make sure to have the custom board option ENABLED.
• In the same module mentioned above, in Board config, Update the PHY addresses of the PHYs with on board PHYs of custom board.

ICSSG0 System Configuration.

• Follow the sequence and use appropriate PHY drivers to setup the PHYs on the add-on card for proper start up.
• Match the configuration options in the application to update with appropriate MII mode and board ID for proper link up.

Note

Use an ICSSG0 supporting platform to get this functionality. Refer to Supporting configurations for details.

See Also

Ethernet And Networking