Summary of Contents for Goodix GR5526
- Page 1 GR5526 Starter Kit User Guide Version: 1.0 Release Date: 2023-01-10 Shenzhen Goodix Technology Co., Ltd.
- Page 2 Copyright © 2023 Shenzhen Goodix Technology Co., Ltd. All rights reserved. Any excerption, backup, modification, translation, transmission or commercial use of this document or any portion of this document, in any form or by any means, without the prior written consent of Shenzhen Goodix Technology Co., Ltd. is prohibited.
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Page 3: Preface
This document introduces the components and hardware features of GR5526 Starter Kit (GR5526 SK), as well as the hardware layout & configuration and RF & current tests of the GR5526 Starter Kit Board (GR5526 SK Board), to help you get started with the GR5526 SK Board quickly in developing Bluetooth Low Energy (Bluetooth LE) products and applications with GR5526 System-on-Chips (SoCs). -
Page 4: Table Of Contents
4.1 RF Performance Test............................18 4.2 Current Consumption Test..........................20 5 SK Board Dimensions............................22 6 FAQ................................... 23 6.1 Why Do I Fail to Connect to and Program GR5526 SK Board via J-Link?............23 7 Glossary................................24 Copyright © 2023 Shenzhen Goodix Technology Co., Ltd. -
Page 5: Introduction
By default, display application firmware has been programmed to a GR5526 SK Board. You can view demo graphics by connecting a GR5526 SK Board to a display daughter board. You can also generate firmware by compiling other application example projects provided in a GR5526 Software Development Kit (SDK) and then download the firmware to a GR5526 SK Board for debugging/testing. - Page 6 On-board QSPI Flash and PSRAM, with reserved interfaces for external Flash and PSRAM • On-board AoA/AoD multi-antenna interface • On-board adjustable boost circuit • Battery level detection • Reserved standard 2.54 mm jumper pin I/O interface Copyright © 2023 Shenzhen Goodix Technology Co., Ltd.
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Page 7: Quick Start Guide
Quick Start Guide 2 Quick Start Guide This chapter introduces how to use the GR5526 SK by running a GR5526 application example on a GR5526 SK Board. Note: The GR5526 example projects are in SDK_Folder\projects. SDK_Folder is the root directory of GR5526 SDK. -
Page 8: Hardware Connection And Configuration
Figure 2-1 SEGGER directory 2.3 Hardware Connection and Configuration To ensure proper function of the GR5526 SK Board, it is required to connect the board to a PC and set the power supply mode. GR5526 supports two connection/programming modes: J-Link and UART. You can select either one as needed. - Page 9 Switch S11 (power selection switch) on the board to the right (VCC) to supply the board via USB connection. Note: The GR5526 SK Board also can be supplied by lithium battery. Switch S11 to the left (Li-BAT) to supply the board by lithium battery.
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Page 10: Example Running
Get the UART port (GPIO_0 and GPIO_1; same as the J-Link port) of GR5526 SoC ready for programming and debugging via UART, by connecting Pin3 to Pin5 and Pin4 to Pin6 of J65 on the GR5526 SK Board with jumpers. - Page 11 Quick Start Guide Note: For more information about example project testing/verification, refer to corresponding example application documents. Copyright © 2023 Shenzhen Goodix Technology Co., Ltd.
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Page 12: Hardware Layout And Configuration
This chapter depicts the hardware layout and detailed hardware configurations of the GR5526 SK Board. 3.1 Block Diagram With a GR5526 Bluetooth SoC as the host MCU, the GR5526 SK Board integrates an interface microcontroller unit (MCU), power modules, USB Type-C connectors, a J-Link/UART debugging module, buttons and LEDs, Flash & PSRAM, digital microphones (MICs), a headphone (speaker) jack, a display &... -
Page 13: Interface Mcu
Figure 3-3 GR5526 SK Board layout (bottom view) 3.3 Interface MCU The GR5526 SK Board integrates an STM32F MCU (U3), which can convert a USB connector to a J-Link port or a Communication Device Class (CDC) virtual serial port, to support J-Link/UART debugging. -
Page 14: Firmware Download Port
GR5526 SK Boards have been factory-downloaded with J-Link OB firmware. No download is required for users. 3.4 Power Supply 3.4.1 Power Supply Mode The GR5526 SK Board supports two power supply modes: power supply via USB connection and power supply from lithium battery. Users can select a proper power supply mode by switching S11: •... -
Page 15: Charging Management Circuit
Power supply via USB connection The GR5526 SK Board is connected to an external power source via J5, J15, or J29. The external power source supplies power at 1.8 V–3.3 V (default: 3.3 V) after current passes through the on-board LDO for voltage regulation. -
Page 16: Battery Level Detection
Figure 3-8 Battery level detection circuit 3.5 Buttons and LEDs The GR5526 SK Board integrates 3 buttons and 3 LEDs, which are connected to corresponding I/O pins on the GR5526 SoC. Table 3-2 Functional Description of buttons/LEDs... -
Page 17: On-Board Qspi Flash/Psram
3.6 On-board QSPI Flash/PSRAM The GR5526 SK Board integrates a 128 Mb QSPI Flash and a 128 Mb PSRAM, to expand Flash and store application data. By default, the power supply pin VCC3P3V outputs current passing through the on-board low dropout regulator (LDO) at 3.3 V, VDDIO outputs current passing through the on-board LDO at 1.8 V, and VIO_OUT outputs current at 1.8 V... -
Page 18: Display & Tp Interface
PSRAM. For external PSRAM commissioning through J27, a plug-in module shall be designed according to the pin definitions of U10 in Figure 3-11, TP53–TP58 shall be disconnected, and TP35–TP40 shall be shorted. Figure 3-11 Expanded QSPI PSRAM schematic diagram 3.7 Display & TP Interface Copyright © 2023 Shenzhen Goodix Technology Co., Ltd. - Page 19 Hardware Layout and Configuration A display & TP interface (J22 & J25) has been reserved on the GR5526 SK Board to connect a display & TP daughter board to the SK Board, allowing users to develop/debug products with display function, for example, smart watches and wristbands.
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Page 20: Audio Module And On-Board Mic
Figure 3-13 Schematic diagram of Audio module and on-board MICs 3.9 AoA/AoD Multi-antenna Interfaces Two AoA/AoD multi-antenna interfaces (multiplexing the I2S interface of the Decode IC) are reserved on the GR5526 SK Board, supporting AoA/AoD application verification. Copyright © 2023 Shenzhen Goodix Technology Co., Ltd. - Page 21 Hardware Layout and Configuration Figure 3-14 AoA/AoD multi-antenna interface Note: MSIO_0–MSIO_3 are multiplexed as AoA/AoD multi-antenna interfaces. Copyright © 2023 Shenzhen Goodix Technology Co., Ltd.
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Page 22: Performance Test
Figure 4-1 GR5526 RF circuit Note: • To test the RF performance, connect the GR5526 SK Board to the test instrument with an RF coaxial cable. The RF coaxial cable is not included in the GR5526 SK package. • Since the board-level PCB antenna is a non-omnidirectional antenna, there will be differences in gain at different angles. - Page 23 RF coaxial cable USB Type-C cable GR5526 SK Board Figure 4-2 Connection between GR5526 SK Board and TLF3000 After hardware connection, you can use the test software on the PC to perform RF performance test. Figure 4-3 RF parameter test diagram...
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Page 24: Current Consumption Test
4.2 Current Consumption Test On the GR5526 SK Board, connect pins 2 and 3 of S1 (DIP switch) to set VBAT to power VBATL and VBATT_RF of the GR5526 SoC through the jumper pin J1, and then connect the GR5526 SoC to a test instrument through J1 to test current consumption. - Page 25 (such as Keysight N6705c) for measurement. To use a power analyzer to test the current consumption of a GR5526 SoC, connect the power port of the power analyzer to Pin 1 of J1. During a Bluetooth LE event, the power analyzer automatically stores and displays the current curve for the moment.
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Page 26: Board Dimensions
SK Board Dimensions 5 SK Board Dimensions Dimensions of the GR5526 SK Board are 110.11 mm x 63.51 mm, with details shown in Figure 5-1. 8.76 mm 12.73 mm 2.54 mm 4.95 mm 110.11 mm Figure 5-1 GR5526 SK Board dimensions (top view) -
Page 27: Faq
6.1 Why Do I Fail to Connect to and Program GR5526 SK Board via J-Link? • Description When I program a firmware file to GR5526 SK Board through Keil/GProgrammer, I fail to connect to and program GR5526 SK Board via J-Link. •... -
Page 28: Glossary
Light-Emitting Diode Low Dropout Regulator Microcontroller Unit Pulse Density Modulation PSRAM Pseudo Static Random Access Memory Personal Computer Radio Frequency Receive Small A Type Transmit Universal Serial Bus UART Universal Asynchronous Receiver/Transmitter Copyright © 2023 Shenzhen Goodix Technology Co., Ltd.
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