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Realtek RTL87 2G Series User Manual

Evaluation board v2 model b
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RTL87x2G Evaluation Board V2 model B
User Manual
V1.1
2023/11/22
Realtek Semiconductor Corp.
No.2, Innovation Road II, Hsinchu Science Park, Hsinchu 300, Taiwan
Tel.: +886-3-578-0211. Fax: +886-3-577-6047
www.realtek.com

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Summary of Contents for Realtek RTL87 2G Series

  • Page 1 RTL87x2G Evaluation Board V2 model B User Manual V1.1 2023/11/22 Realtek Semiconductor Corp. No.2, Innovation Road II, Hsinchu Science Park, Hsinchu 300, Taiwan Tel.: +886-3-578-0211. Fax: +886-3-577-6047 www.realtek.com...
  • Page 2 RTL87x2G Evaluation Board V2 model B User Manual COPYRIGHT ©2023 Realtek Semiconductor Corp. All rights reserved. No part of this document may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means without the written permission of Realtek Semiconductor Corp.
  • Page 3 RTL87x2G Evaluation Board V2 model B User Manual Revision History Date Version Comments Author Reviewer 2023/11/10 V1.0 First version chw_zhou Add EVB interfaces distribution Diagram 2023/11/22 V1.1 Add screen interface selection Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.

  • Page 4: Table Of Contents

    2.1 EVB power connection ........................16 2.2 Download with on-board USB-UART converter ................17 2.3 Debug log with on-board USB-UART converter ................17 2.4 Ethernet and SDIO interface Switching .................... 17 2.5 Display interface ..........................18 Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.
  • Page 5 Figure 2-3 Switch to Ethernet interface ......................17 Figure 2-4 Switch to SDIO interface ........................17 Figure 2-5 Single USB cable power supply and burning mode, 5VDIS connecting to 5V_FT ....18 Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.
  • Page 6 RTL87x2G Evaluation Board V2 model B User Manual Figure 2-6 Dual wire burning debugging, 5VDIS connecting to 5V_IC ............18 Figure 2-7 Screen interface select ........................18 Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.

  • Page 7: Overview

    2. Support QSPI/8080/RGB display interface 3. Audio module (AMIC, DMIC, AEC) 4. Ethernet & WiFi module 5. Support RS485 &CAN 6. Temperature & humidity sensor module (I2C) 7. IR sensing module interface Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.

  • Page 8: Rtl87X2G Evb V2 Model B Blocks

    EVB contains the following user interfaces as shown in Figure 1-1, Figure 1-2, Figure 1-3 and Figure 1-4, which marks 22 components with red rectangles. Figure 1-1 EVB blocks distribution Diagram-Front Figure 1-2 EVB blocks distribution Diagram-Back Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.
  • Page 9 RTL87x2G Evaluation Board V2 model B User Manual Figure 1-3 EVB interfaces distribution Diagram-Front Figure 1-4 EVB interfaces distribution Diagram-Back Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.

  • Page 10: Main Chip (Module)

    UART downloading or log debugging. It is also allowed to choose this USB to supply power with jumper. The yellow box marked parts shown in Figure 1-6 can supply 1V8 and 3V3 power respectively, which can power external devices. Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.
  • Page 11 1.2.4 IO It is designed to connect peripheral devices with IO ports or provide IO test points. Mark 8: JP1, 2x23 pin header, IO jumper Mark 9: JP2, 2x17 pin header, IO jumper Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.

  • Page 12: Interface

    RS485 module input is 3.3V-TTL. When connecting the RS485 module to EVB, pay attention to the one-to-one correspondence between each pin on the module and the RS485 interface on the EVB to prevent reverse insertion. Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.
  • Page 13 CAN controller, with a transmission rate of up to 1Mbit/s. When connecting the CAN module to EVB, pay attention to the one-to-one correspondence between each pin on the module and the CAN interface on the EVB to prevent reverse insertion. Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.
  • Page 14 Mark 12: The microphone and headphone sockets are shown in Figure 1-14. The red is the microphone socket, and the green is the headphone socket, both of which can support 3.5mm audio connectors. Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.
  • Page 15 8kHz~96kHz. The power supply is 5V analog power supply and 3.3V digital power supply. Figure 1-15 Audio stereo analog-to-digital conversion module interface Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.
  • Page 16 (the sensing module will automatically extend a delay time period after detecting each activity of the person, and the start point of the delay time will be the time of the last activity). Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.
  • Page 17 The temperature range and accuracy are -40~+125℃ and ±0.2℃, respectively. The humidity range and accuracy are 0-100% RH and ± 2% RH, respectively. The power consumption is 4.8uW (once/second). When connecting, pay attention to the sequence of plug positions to prevent reverse connections. Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.
  • Page 18 Mark 10: 24-bit SDADC interface, as shown in Figure 1-22. Supports two differential inputs, A0IO and A1IO are a pair of differential inputs. A2IO and A3IO are a pair of differential inputs. Figure 1-22 24bits SDADC interface Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.
  • Page 19 NAND flash connection is shown in Figure 1-26. When using SD NAND flash, it is necessary to use a jumper cap to short circuit J35. Provide a power switching circuit for the module to cut off the power supply when not in use, Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.
  • Page 20 Mark 17: Ethernet module, as shown in Figure 1-27. The button marked in the red box is the reset button for the Ethernet module. The Ethernet module uses RTL8201FR, supports RMII interfaces. Figure 1-27 Ethernet module Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.

  • Page 21: Reset Key

    Figure 1-29 Reset keys 1.3 EVB motherboard pin assignment There is an anti-reverse insertion mechanism between motherboard and daughterboard. Please refer to the latest RTL87x2G_IOPin_Information table about the pin assignment of daughterboard. Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.

  • Page 22: Evb User Guide

    Figure 2-2, and all jumpers marked in the red box need to be placed. The difference between using a single USB socket CON2 for power supply is that in J120, the jumper cap is selected as 5V_ IC. Figure 2-2 Power supply with USB socket CON1&2 Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.

  • Page 23: Download With On-Board Usb-Uart Converter

    When using the WiFi or SDIO module, it is necessary to place the resistor in Figure 2-4 and remove the resistors in Figure 2-3; By default, the Ethernet module is selected. Figure 2-3 Switch to Ethernet interface Figure 2-4 Switch to SDIO interface Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.

  • Page 24: Display Interface

    Figure 2-5 Single USB cable power supply and burning mode, 5VDIS connecting to 5V_FT Figure 2-6 Dual wire burning debugging, 5VDIS connecting to 5V_IC Figure 2-7 Screen interface select Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.

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