National Instruments PXIe-8522 Manuale utente

USER MANUAL

PXIe-8522/8523

4-port, 1000BASE-T1 and 100/1000BASE-T1 PXI Automotive

Ethernet Interface Modules

This document explains how to install and configure the PXIe-8522 and PXIe-8523

Automotive Ethernet interface modules.

Contents

Introduction...............................................................................................................................1

Getting Started.......................................................................................................................... 2

Installing the Module........................................................................................................ 2

Configuring the Module in MAX..................................................................................... 3

Connection Guidelines......................................................................................................4

Pinouts.......................................................................................................................................5

PXIe-8522 Pinout..............................................................................................................5

PXIe-8523 Pinout..............................................................................................................6

Port Modes................................................................................................................................ 6

Data Path Overview.......................................................................................................... 7

Direct Mode...................................................................................................................... 8

Tap Mode.......................................................................................................................... 9

PHY State................................................................................................................................10

Link Speed...............................................................................................................................11

Programming the Module........................................................................................................11

LED Functionality...................................................................................................................11

Synchronization Methods....................................................................................................... 12

Local Time...................................................................................................................... 12

Network Time................................................................................................................. 13

Host Time........................................................................................................................13

PXI Triggers....................................................................................................................13

Introduction

The PXIe-8522 and PXIe-8523 modules are 4-port, unshielded twisted pair (UTP) Automotive

Ethernet interfaces for developing applications with the NI-XNET driver. These modules are

ideal for developing applications that require Automotive Ethernet to test and validate

automotive electronic control units (ECUs).

The PXIe-8522 module is fixed at 1000BASE-T1. The PXIe-8523 module is configurable

between 100BASE-T1 and 1000BASE-T1.

Kit Contents

• PXIe-8522 or PXIe-8523 module

• 26 AWG x 8 mm insulated ferrules, x 20

• Screw driver for use with connector spring terminal push buttons

•PXIe-8522 Safety, Environmental, and Regulatory Information or PXIe-8523 Safety,

Environmental, and Regulatory Information

Note This device ships with a plug connector pre-installed on each port.

Getting Started

Installing the Module

Notice To prevent damage to the module caused by ESD or contamination, handle

the module using the edges or the metal bracket.

1. Ensure the AC power source is connected to the chassis before installing the module.

The AC power cord grounds the chassis and protects it from electrical damage while you

install the module.

2. Power off the chassis.

3. Inspect the slot pins on the chassis backplane for any bends or damage prior to

installation. Do not install a module if the backplane is damaged.

4. Remove the black plastic covers from all the captive screws on the module front panel.

5. Identify a supported slot in the chassis. The following figure shows the symbols that

indicate the slot types.

Figure 1. Chassis Compatibility Symbols

NI PXIe-1062Q

12 3 45

1. PXI Express System Controller Slot

2. PXI Peripheral Slot

3. PXI Express Hybrid Peripheral Slot

4. PXI Express System Timing Slot

5. PXI Express Peripheral Slot

These modules can be placed in PXI Express peripheral slots, PXI Express hybrid

peripheral slots, or PXI Express system timing slots.

6. Touch any metal part of the chassis to discharge static electricity.

7. Ensure that the ejector handle is in the downward (unlatched) position.

8. Place the module edges into the module guides at the top and bottom of the chassis. Slide

the module into the slot until it is fully inserted.

2| ni.com | PXIe-8522/8523 User Manual

Figure 2. Module Installation

NI PXIe-1075

1. Chassis

2. Hardware Module

3. Ejector Handle in Downward (Unlatched) Position

9. Latch the module in place by pulling up on the ejector handle.

10. Secure the module front panel to the chassis using the front-panel mounting screws.

Note Tightening the top and bottom mounting screws increases mechanical

stability and also electrically connects the front panel to the chassis, which can

improve the signal quality and electromagnetic performance.

11. Cover all empty slots using EMC filler panels or fill using slot blockers to maximize

cooling air flow, depending on your application.

12. Power on the chassis.

Configuring the Module in MAX

Note NI-XNET software, which includes hardware drivers, can be installed before

or after the module is installed.

Use Measurement & Automation Explorer (MAX) to configure your NI hardware. MAX

informs other programs about which devices reside in the system and how they are configured.

1. Launch MAX.

2. In the configuration tree, expand Devices and Interfaces to see the list of installed NI

hardware.

Note If you do not see your module listed, press <F5> to refresh the list of

installed modules. If the module is still not listed, power off the system, ensure

the module is correctly installed, and restart.

3. Expand your module to see the list of ports.

4. Record the NI-XNET interface name that MAX assigns to each port of the hardware. Use

this name when programming the module.

PXIe-8522/8523 User Manual | © National Instruments | 3

5. For each port, configure the port mode to either Direct or Tap, depending on whether you

want to participate fully in network communication as an endpoint (Direct) or monitor an

existing network connection (Tap). Refer to the Port Modes section for more information.

6. For each port, configure the PHY state to either Master or Slave, depending on the

corresponding state of the PHY that you are connecting to. Refer to the Phy State section

for more information.

Note Two PHYs that are physically connected must be configured to use

opposing PHY states. One PHY must be configured to be the master, and the

other PHY must be configured to be the slave.

7. (PXIe-8523 only) For each port, configure the link speed to either 100 Mb/s or 1000

Mb/s. Refer to the Link Speed section for more information.

Note Two ports that are configured as Tap partners must be configured with

matching link speeds.

8. Self-test the hardware by selecting the item in the configuration tree and clicking Self-

Test in the MAX toolbar.

The MAX self-test performs a basic verification of hardware resources.

Connection Guidelines

Notice Operate this product only with cables less than 15 m in length.

1. Push a solid wire or ferrule directly into the terminal.

2. When inserting a stranded wire without a ferrule, first open the terminal by pressing the

push button with a finger or the included screwdriver tool.

3. Verify that all strands of a stranded wire are securely retained.

4. Insulated ferrules are recommended for small-gauge stranded wire. Insulated ferrules (26

AWG x 8 mm) are included with this product.

Note A ferrule crimping tool is not included with this product.

5. Tighten the connector screw flanges to the torque specification in the PXIe-8522

Specifications or PXIe-8523 Specifications for the best shock and vibration performance.

The connector screw flanges ship in a non-torqued configuration for easy removal.

6. When removing a wire, first open the terminal by pressing the push button with a finger

or the included screwdriver tool.

4| ni.com | PXIe-8522/8523 User Manual

Pinouts

PXIe-8522 Pinout

Figure 3. PXIe-8522 Pinout

PORT 1

LINK/

ACT

STATUS

TAP

PORT 2

LINK/

ACT

STATUS

PORT 3

LINK/

ACT

STATUS

TAP

PORT 4

LINK/

ACT

STATUS

PXIe-8522

1000BASE-T1

PORT 1

LINK/

ACT

STATUS

Link/Act

LED

Port Identification

Status

LED

Pin 1

Pin 2

Pin 3

Tap

Pairs

Ports

Table 1. PXIe-8522 Pinout Signal Descriptions

Pin Number Signal Type Signal Direction Signal Description Signal Required

1 TRX_P Bi-directional Transceiver plus Required

2 TRX_M Bi-directional Transceiver minus Required

3 Shield — Shield Optional

PXIe-8522/8523 User Manual | © National Instruments | 5

PXIe-8523 Pinout

Figure 4. PXIe-8523 Pinout

PORT 1

LINK/

ACT

STATUS

TAP

PORT 2

LINK/

ACT

STATUS

PORT 3

LINK/

ACT

STATUS

TAP

PORT 4

LINK/

ACT

STATUS

PXIe-8523

100/1000BASE-T1

PORT 1

LINK/

ACT

STATUS

Link/Act

LED

Port Identification

Status

LED

Pin 1

Pin 2

Pin 3

Tap

Pairs

Ports

Table 2. PXIe-8523 Pinout Signal Descriptions

Pin Number Signal Type Signal Direction Signal Description Signal Required

1 TRX_P Bi-directional Transceiver plus Required

2 TRX_M Bi-directional Transceiver minus Required

3 Shield — Shield Optional

Port Modes

The module includes four ports that can be configured as independent network interfaces. The

ports can function in Direct mode or Tap mode. Regardless of mode, traffic on each port can

be monitored. When monitoring is enabled, all traffic that is transmitted or received on that

6| ni.com | PXIe-8522/8523 User Manual

port is captured. Each packet is timestamped by both the local time keeper and the port's

network time keeper. The local time keeper runs off PXI Clk10 if present on the chassis. Each

port has an independent network time keeper, which uses IEEE 802.1AS to synchronize time

with other devices on the network.

Note Port mode cannot be changed while an XNET session is started on the port.

When the port mode is changed, port connectivity is lost while the change is

configured.

Data Path Overview

The following diagram describes each port within the module.

Figure 5. PXIe-8522/8523 Block Diagram

PXIe-8522/8523

User Application

PXIe Controller

XNET OS Stack

Intel i210

XNET

Monitor

XNET

Endpoint

DUT

802.1AS

Firmware

MAC

PHY

Each port has three data paths: XNET monitor, XNET endpoint, and OS stack. All three data

paths can be used simultaneously depending on port mode. The monitor path reads and

inspects all Ethernet frames that are received or transmitted on the port. The endpoint path

transmits and receives Ethernet frames on the port. The endpoint path is typically used if you

need it to act as an AVB endpoint. The OS stack path transmits and receives data using

standard network sockets via the operating system's network stack. The OS stack is typically

used with applications designed to use traditional TCP- or UDP-based protocols for its

network communication.

PXIe-8522/8523 User Manual | © National Instruments | 7

For Ethernet interfaces, the suffix "/monitor" indicates the use of a monitor path when it is

appended to the interface name. For example, "ENET1" specifies use of the endpoint path, and

"ENET1/ monitor" specifies use of the monitor path. The monitor path is used to read Ethernet

frames that are received or transmitted on each port. When Tap is enabled, data received via

the monitor path by a Tap pair will be identical on each port in the pair.

The IEEE 802.1AS protocol is implemented by the firmware running on the module, and

packet timestamps are taken near the device's physical layer. This helps guarantee a high

degree of synchronization accuracy for each port's network time.

Note The PXIe-8522 and PXIe-8523 modules only support jumbo frames at

1000BASE-T1. Refer to the Link Speed section for more information.

Direct Mode

The following diagram describes Direct mode on the module.

8| ni.com | PXIe-8522/8523 User Manual

Figure 6. Direct Mode

PXIe-8522/8523

User Application

PXIe Controller

XNET OS Stack XNET

XNET

Endpoint Intel i210 Intel i210 XNET

Endpoint

DUT1

MAC

PHY

DUT2

MAC

PHY

Note This diagram shows a design with two ports. Each of the device's four ports

can run independently under Direct mode.

Note Although it is not shown in the diagram, you can simultaneously use the

XNET monitor data path on each port while it is in Direct mode. This allows you to

analyze all network traffic that is transmitted and received on the port's endpoint.

In Direct mode, ports are directly connected and function as endpoints; Ethernet frames

received and transmitted on the port have no relationship to any other ports on the device.

Input and output sessions are supported in Direct mode. The module supports up to four ports

using Direct mode.

Tap Mode

In Tap mode, a pair of adjacent ports on the device, called tap partners, are connected to form a

Tap that allows the module to monitor traffic. In Tap mode, physical Port 1 and Port 2 are Tap

PXIe-8522/8523 User Manual | © National Instruments | 9

partners, and Port 3 and Port 4 are Tap partners. A frame received on one Tap partner is

transmitted out of the other Tap partner, which mimics the behavior of an Ethernet cable.

Note For more information about Tap latency, refer to the PXIe-8522

Specifications or PXIe-8523 Specifications.

When an input session is created using an XNET interface for either Tap partner, and the "/

monitor" suffix is used with the XNET interface, the session reads frames going through the

Tap partners. Output sessions are not supported in Tap mode.

Note You only need to select the monitor of one port in the Tap pairing. If both

monitors are selected, you will receive the same data twice.

Setting one port to Tap mode will automatically set the port's Tap partner to Tap mode. The

module supports two Taps (Ports 1/2 and Ports 3/4) using this mode. All four ports can also be

used simultaneously while one pair is in Tap mode and the other ports are in Direct mode. The

following diagram describes one Tap pair on the module.

Figure 7. Tap Mode

PHY

XNET

Monitor

PHY

PXIe-8522/8523

DUT1 DUT2

User Application

XNET XNET

PXIe Controller

PHY State

The module PHY's master/slave state can be configured for communication with its peer PHY.

In traditional Ethernet networks, this master/slave state is negotiated automatically at the PHY

level. However, in Automotive Ethernet networks, the master/slave state is commonly

configured statically and is typically determined by the PHY state setting of the connected

DUT. Configure the PHY state of the module's port to the opposite of the connected DUT's

PHY state.

10 | ni.com | PXIe-8522/8523 User Manual

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