Getting Started with the TJA11xx-EVB Evaluation Board

2.1 Board Features

• Evaluation of hardware pinstrapping options on the expansion board
• LEDs to indicate supply status and PHY signals
• Several supply options can be configured - with external supplies, all possible options can be evaluated
• All signals accessible via pinheaders
• CMOS xMII interface accessible via pinheader
• SGMII interface accessible via SFP cage
• JTAG connection accessible
• SMI accessible in several different modes including via USB

Several board-level features were implemented to simplify operation while allowing room for customization:

• The entire board can powered via USB
• SMI access via USB is possible, software support is provided in the form of a GUI-tool and a python API
• SMI+xMII pinheaders are placed in such a way that 2 boards can be connected back-to-back
• All serial interfaces supported by the sabre specification are accessible via USB (SPI, I²C, SMI)
• Unused pins on the USB-to-GPIO IC are brought to pinheaders and can be used for custom functions
• Supplies routed to the sabre daughter expansion can be switched via enable signals

2.2 Board Description

The TJA11xx-EVB evaluation board is designed to be used with PHY expansion boards that support the Sabre connector.

The EVB allows access to all signals on the expansion board that are routed to the Sabre connector and provides power to the expansion board. When combined with the features offered by the Sabre expansion cards, a number of hardware tests can be performed.

2.3 Board Components

Overview of the TJA11xx-EVB evaluation board.

Figure 1. GS-TJA11xx-EVB Callouts

Figure 1. GS-TJA11xx-EVB Callouts

3.1 Install Software

The TJA11xx-EVB Configuration GUI software under secure file, used to communicate with the board via USB must be downloaded and installed from the NXP website.

4.1 Configure Hardware

The TJA11xx-EVB board cannot be used standalone. A PHY expansion board with a supported 100/1000 BASE-T1 PHY must be plugged into the EVB before it can be used. The following jumper settings should be checked before plugging in the expansion board and applying power (see Figure 2).

Table 1 Quick start settings

Note: Jumper J18: 9-10 must be closed.

Figure 2. GS-TJA11xx-EVB Configuration

Figure 2. GS-TJA11xx-EVB Configuration

After plugging the Sabre expansion board onto the EVB and powering it up by connecting it via USB to a computer, check the following LEDs (see Figure 3):

• Orange: D5 - supply from USB connector
• Green: D8 - supply available after input selector and USB switch

Note: If D5 lights up to indicate USB supply is connected but D8 does not, power-up handshaking was not successful. Make sure to plug the device into a functional USB port.

• Green: D6 - 3.3 V power available
• Green: D9 - 5-12 V power available

Once the hardware has started up successfully, the GUI-Tool can be loaded and used to access the PHY.

Figure 3. GS-TJA11xx-EVB Leds

Figure 3. GS-TJA11xx-EVB Leds

Board Information

Available to selected customers only (non disclosure agreement (NDA) required). Contact your local NXP sales representative for more information.

Additional References

In addition to our Automotive Ethernet PHY Transceivers product pages containing details of our PHY devices, you may also want to visit:

• AN13335, PCB Design Guidelines for Automotive Ethernet
• TJA11xx_STBx Sabre Expansion Board