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Realtek RTL87 2G Series User Manual

Evaluation board v2 model c
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RTL87x2G Evaluation Board V2 model C
User Manual
V1.0
2023/11/14
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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  • Page 1 RTL87x2G Evaluation Board V2 model C User Manual V1.0 2023/11/14 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 C 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 C User Manual Revision History Date Version Comments Author Reviewer 2023/11/14 V1.0 First version Zoe_Liang Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.

  • Page 4: Table Of Contents

    2.1 EVB power connection ........................11 2.2 Download with on-board USB-UART converter ................11 2.3 Debug log with on-board USB-UART converter ................12 2.4 Audio power amplifier interface ......................12 2.5 Display interface ..........................13 Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.
  • Page 5 Figure 2-1 Power supply connection ........................11 Figure 2-2 Download connection ......................... 11 Figure 2-3 Debug connection ..........................12 Figure 2-4 PA power supply ..........................12 Figure 2-5 PA interface ............................13 Figure 2-6 Display connection ..........................13 Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.

  • Page 6: Overview

    The RTL87x2G evaluation board V2 model C provides a hardware environment for user development, including: 1. 5V to 3.3V&1.8V power module 2. Support QSPI/8080 display interface 3. Audio module (AMIC&DMIC) 4. LED&RGB module 5. FT232 for USB to UART Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.

  • Page 7: Rtl87X2G Evb V2 Model C Blocks

    RTL87x2G Evaluation Board V2 model C User Manual 1.2 RTL87x2G EVB V2 Model C Blocks 1.2.1 EVB Blocks Distribution The EVB blocks distribution are show as follows. 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 8 RTL87x2G Evaluation Board V2 model C 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 9: Main Chip (Module)

    UART downloading or log debugging. Mark 6: The parts marked in yellow shown in Figure 1-6 can supply 1V8 and 3V3 power respectively, which can power external devices. Figure 1-6 USB socket CON1&2 Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.

  • Page 10: Interface

    Normal Mode: Need to set the dial switch (both SW1 and SW2) to “1” position, which will pull none the LOG pin, then press the reset button or power on again to start running the program. Log pin can be used for debug. Figure 1-8 UART/LOG test interface-front Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.
  • Page 11 Figure 1-10 SWD interface Mark 3: Lithium battery interface, as shown in Figure 1-11. By connecting the jumper marked in yellow, the lithium battery can be charged by USB. Figure 1-11 Lithium battery interface Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.
  • Page 12 Mark 11: 24bit SDADC interface, as shown in Figure 1-14. Support two differential input, AIN0 and AIN1 are a pair of differential inputs, AIN2 and AIN3 are a pair of differential inputs. Figure 1-14 24bit SDADC interface Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.
  • Page 13 The specific operation is to unplug the jumper on J35, and then connect the pin header marked blue on J37 in Figure 1-17 to any GPIO. The output level of GPIO controls whether the module works. Figure 1-16 SD NAND flash interface and daughterboard Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.

  • Page 14: Key Button

    The capacitor in Figure 1-19 can be combined with the internal pull-up resistor of the IC pin to form a filtering circuit to eliminate button jitter. Figure 1-19 Reset button Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.

  • Page 15: Evb Motherboard Pin Assignment

    Figure 1-20 GPIO button 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 16: Evb User Guide

    P3_0 to FT232_RX, P3_1 to FT232_TX by jumpers, as shown in Figure 2-2. After downloading, select the dial switch to “1” position, which will pull none P0_3, then press reset button or power on again, the program will start running normally. Figure 2-2 Download connection Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.

  • Page 17: Debug Log With On-Board Usb-Uart Converter

    Figure 2-4 PA power supply The default connection is the jumper shown in red on the left side of Figure 2-5. It is used to mono mode for 3.5 mm jack headphone. Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.

  • Page 18: Display Interface

    Mark 12: Screen interface select, as shown in yellow box. It needs to set the status of LCD_IM [1:0] based on used screen. Please refer to the datasheet of screen for details. Figure 2-6 Display connection Copyright 2023 Realtek Semiconductor Corporation. All Rights Reserved.

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