Realtek Semiconductor RTL8773B User Manual
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Realtek Semiconductor RTL8773B User Manual

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RTL8773B Motherboard
User Guide
V2.4
2019/11/21
Copyright 2019 Realtek Semiconductor Corporation.
All Rights Reserved.

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Summary of Contents for Realtek Semiconductor RTL8773B

  • Page 1 RTL8773B Motherboard User Guide V2.4 2019/11/21 Copyright 2019 Realtek Semiconductor Corporation. All Rights Reserved.
  • Page 2 This user guide describes how to use RTL8773B Motherboard. The document is organized as follows:  Chapter 1. “Overview” This chapter introduces the features of the RTL8773B Motherboard.  Chapter2. “Getting Start” This chapter describes Hardware Requirements for starting the RTL8773B Motherboard.
  • Page 3 RTL8773B Motherboard User Guide 1 Overview 1.1 Introduction This user guide describes the hardware setup for RTL8773B Motherboard. The board is designed to contain hardware needed to evaluate/develop demo applications of the RTL8773B chip. The evaluation board contains:  Stereo audio input/output ...
  • Page 4 RTL8773B Motherboard User Guide Figure 1-1 the Frames of RTL8773B Motherboard Figure 1-2 the Physical Map of RTL8773B Motherboard & EVB ·Copyright 2019 Realtek Semiconductor Corporation. All Rights Reserved.
  • Page 5 RTL8773B Motherboard User Guide Figure 1-3 RTL8773B EVB Daughter board USB Connector CON2 Supply power for RTL8773B VDD_ADP and audio power amplifier. DM and DP signals are connected to VDD_ADP. Li-ion BAT Connector Supply power from external Lithium battery for RTL8773B VBAT.
  • Page 6 31. Control jumper for thermal detector J5 32. Power Supply for other device 33. Power supply for other device 34. Jumper for MIC module, J20 35. Power supply for FT 232, J33 36. RTL8773B EVB Daughter board USB Connector USB Power Jumper Description V_5V...
  • Page 7 RTL8773B Motherboard User Guide Battery Socket Battery connector Battery Jumper Description Description Description BAT+ BAT+ BAT- V_TH VDD_VBAT BAT+ Power test jumper VACC Test Jumper Description Description VDD_ADP VACC Description Description VDD_IO_AUX2 VDD_IO_AUX1 VDD_LDO_AUX2 VDD_LDO_AUX1 Description Description Description AUXIN_L AUXIN_R...
  • Page 8 RTL8773B Motherboard User Guide MIC1_N Pull Down MIC1_P BIAS Jumper J22 Jumper J24 Description Description MIC_BIAS MIC2_N_DN MIC1_P_UP MIC2 Jack MIC2 Jack Jumper J16 Jumper J21 Description Description MIC1_N MIC1_P JACK_N JACK_P MIC2_N Pull Down MIC2_P BIAS Jumper J15 Jumper J19...
  • Page 9 RTL8773B Motherboard User Guide JACK_GND Jumper AOUT_N Short Jumper Description Description SPKL_N JACK_GND SPKR_N SPKL_N PA Power Jumper Description VDD_ADP VDD_PA VDD_VBAT Description Description +OUT_L +OUT_R -OUT_L -OUT_L LOG TP6 Description Description M2_0 RXD_IN TXD_OUT HCI Interface Description RX_IN TX_OUT ·Copyright 2019 Realtek Semiconductor Corporation.
  • Page 10 RTL8773B Motherboard User Guide KEYS&LEDs control jumper 18 19 8 10 Description Description Description KEY0 M1_1 KEY1 M1_2 KEY2 M1_4 KEY3 M1_5 KEY4 M4_1 KEY5 M3_0 KEY6 M3_1 ED10 KEY7 M2_2 ED11 KEYs&LEDs control jumper 8 10 14 15 Description...
  • Page 11 VDD102 1.4 IO Pins Assignment The RTL8773B Motherboard is designed to fit RTL8773B EVB daughter board. All common interfaces installed on evaluation board are available to each IO pin of RTL8773B chip by connecting control jumpers to different RTL8773B chip’s IOs.
  • Page 12 RTL8773B Motherboard User Guide The default pin assignment is performed by directly shorting pins of RTL8773B Motherboard and common interfaces on control jumper. For example, J3 is used for LEDs’ and KEY s’ control. Short Pin1 and Pin2 on control jumper, LED1 is controlled by M0_1 of RTL8773B Motherboard...
  • Page 13 RTL8773B Motherboard User Guide MIC1_N MIC1_N MIC2_P MIC2_P MIC2_N MIC2_N MICBIAS MICBIAS AOUT_LP AOUT_LP AOUT_LN AOUT_LN AOUT_RP AOUT_RP AOUT_RN AOUT_RN MIC3_P MIC3_P MIC3_N MIC3_N ·Copyright 2019 Realtek Semiconductor Corporation. All Rights Reserved.

  • Page 14: Getting Start

    Short jumper J42, then LED7 is on and USB_5V from micro-USB connector CON2 on the front side of the board starts to supply power for RTL8773B Motherboard and EVB. OR connect VADP of jumper J42 to U_5V_FT (TP25), micro-USB connector CON3 on the opposite side of the board starts to supply power for RTL8773B Motherboard and EVB.

  • Page 15: Debug Interface

    RTL8773B Motherboard User Guide Figure2-1 Power Jumper Connection 2.2.2 Debug Interface To download and debug APP program, follow the steps below: J-Link is connected to corresponding SWD interface on motherboard as shown as follows. Pay special attention to the consistency of working voltage between J-Link and Motherboard.

  • Page 16: Keys And Leds

    The default mapping table for LEDs and KEYs is shown as Table2-1. Control pins of Keys and LEDs on J3、J6、J44 and J45 can be connected to different RTL8773B Motherboard IOs. For example, Key0’s control pin on J6 is Pin2. By putting jumper wire on J6.1 and J6.2, we can read key value through M1_1.

  • Page 17: Audio Interface

    RTL8773B Motherboard User Guide Figure 2-5 Active-high KEYs & Active-low KEYs 2.2.4 Audio Interface Aux line-in, dual microphones, and headphone out are supported on RTL8773B Motherboard. When MIC1 jack is used for electret condenser microphone input, follow the steps: Short J22 and J24, as shown in red rectangle box.
  • Page 18 RTL8773B Motherboard User Guide Figure 2-7 MIC2 connections for condenser microphone MIC3 jack is used for microphone input. When used as electret condenser microphone input, follow the steps: Short J26 and J28. Connect J29.1 with term 1(+) of microphone. Connect J27.1 with term 2(-) of microphone as shown below. MIC3 interface begins to sample voice signal through external microphone.
  • Page 19 RTL8773B Motherboard User Guide Figure 2-10 Capless connection for Headphone out ALC105 works on motherboard as audio power amplifier. AOUT_LP and AOUT_RP are amplified to drive speaker. By shorting J4.5 and J4.6, M4_0 on IO jumper B is connected to PD# to power off amplifier for low power application, which is active-low.

  • Page 20: Performance Test

     RF performance test 3.1 Power Consumption Test Users can perform power consumption test on RTL8773B Motherboard. Users are required to comply with the steps and requirements introduced by this document. 3.1.1 Test Device - This demonstration requires DC source and high-performance current meter.
  • Page 21 The following are the steps to perform the demonstration: Download RWS flash code to RTL8773B Motherboard with MP Programming Tool. In RWS application, headphone out is configured to be mono .

  • Page 22: Rf Performance Test

    Figure 3-3 Setting on Agilent 14564B Software and DMM Software 3.2 RF Performance Test In this demonstration, users can perform RF test on RTL8773B Motherboard. Users should comply with the steps and requirements mentioned in this document. After finishing setting up hardware connection, use RF test tool “RTLBTAPP” for non-link test and DUT test mode selection.
  • Page 23 RTL8773B Motherboard User Guide 3.2.2 BLE Direct Test Mode - Test RTL8773B Motherboard for BLE Test Item through HCI UART Interface This part describes the direct test mode (DTM) mechanisms for testing BLE items and explains how the direct test mode connection is established.
  • Page 24 USB Cable USB to UART converter RF Cable Figure 3-7 Converter for USB to UART RTL8773B Motherboard defines the UART pin as shown in the table below: Table 3-1 HCI UART Pin Define PIN Name Interface HCI UART RX...
  • Page 25 This part describes how to establish hardware connection for BR/EDR items or LE RF certification. BR/EDR test requires command from PC through HCI UART. RTL8773B EVB Motherboard use RF path to connect with the Bluetooth measurement instrument as shown in Figure 3-9.
  • Page 26 RTL8773B Motherboard User Guide 3. Connect USB connector (blue rectangle in Figure3-9) to PC. 4. Open RF Test tool “RTLBTAPP”, start test according to RF test tool user guide. ·Copyright 2019 Realtek Semiconductor Corporation. All Rights Reserved.

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