Circuit Note

CN-0575

analog.com

Rev. 0 | 6 of 7

EQUIPMENT NEEDED

►

EVAL-CN0575-RPIZ

►

EVAL-ADIN1100-EBZ

►

24 V (Class 12) or 55 V (Class 13) power supply

►

Raspberry Pi computer (Model 3B+ or above)

►

Host PC (Windows/Linux/Mac)

►

CN0575 demo Python script

►

Plug-in screw-terminal connector

►

Single-pair of 18 AWG (max) wires

►

Category 5e Ethernet cable with RJ45 connectors

►

USB-A to micro-USB-B cable

GETTING STARTED

Before proceeding with the test, the Raspberry Pi must be config-

ured with the latest ADI Kuiper Linux image and set to use the

CN0575 device tree. For a detailed procedure on how to set up the

Raspberry Pi, refer to the EVAL-CN0575-RPIZ User Guide.

SETUP AND TEST

To establish a 10BASE-T1L connection to a Raspberry Pi using the

EVAL-CN0575-RPIZ, follow below procedure:

1. Connect the EVAL-CN0575-RPIZ to the Raspberry Pi via the

40-pin interface connector.

2. Set the output of the DC power supply to either 24 V (Class 12)

or 55 V (Class 13), depending on the setting of JP1 and JP2 on

the EVAL-CN0575-RPIZ.

3. Screw in one end of the single pair of wires to the terminal block

of the EVAL-CN0575-RPIZ.

4. Screw in the other end to the plug-in connector on the EVAL-

ADIN1100-EBZ.

5. Screw in the other end of the twisted pair into the EVAL-

ADIN1100-EBZ 10BASE-T1L terminal block.

6. Using the Ethernet cable and the micro-USB cable, connect the

EVAL-ADIN1100-EBZ to the host PC.

Figure 8. CN0575 Test Setup

7. The LINK LED on the EVAL-CN0575-RPIZ and the LED_0 LED

on the EVAL-ADIN1100-EBZ must turn on and start blinking at

the same time to indicate a successful link.

8. On the host PC, use remote access software (PuTTY, VNC

viewer) to log into and control the Raspberry Pi.

9. Open Python on the remote host and run the CN0575 example

script, as shown in Figure 9. The CPU temperature and ADT75

will display, the on-board ALERT LED starts blinking, and the

state of the TEST button will be displayed.

Figure 9. CN0575 Example Script