Fibocom SC128 Hardware Manual
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Fibocom SC128 Hardware Manual

Fibocom SC128 Hardware Manual

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SC128
Hardware Guide
V1.3

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Summary of Contents for Fibocom SC128

  • Page 1 SC128 Hardware Guide V1.3...
  • Page 2 Trademark Statement The trademark is registered and owned by Fibocom Wireless Inc. Other trademarks, product names, service names and company names appearing in this document are owned by their respective owners.
  • Page 3 Contact Information Website: https://www.fibocom.com Address: 10/F-14/F, Block A, Building 6, Shenzhen International Innovation Valley, Dashi First Road, Xili Community, Xili Subdistrict, Nanshan District, Shenzhen Tel: 0755-26733555 Safety Instructions Do not operate wireless communication products in areas where the use of radio is not recommended without proper equipment certification.

  • Page 4: Table Of Contents

    3.2.1.3 Sleep/Wakeup ....................38 3.2.1.4 Volume Control ....................38 3.3 USB Interface (TYPE-C) ....................38 3.4 UART ..........................41 3.5 SPI ..........................42 3.6 SD ..........................43 3.7 SIM ..........................44 3.8 GPIO ..........................46 Copyright © Fibocom Wireless Inc.
  • Page 5 4.3 GNSS Antenna ......................67 4.3.1 GNSS Operating Frequency ................... 68 4.3.2 Circuit Reference Design ..................68 4.4 Antenna Requirements ....................69 5 RF PCB Layout Design Guide ................. 71 6 WIFI and Bluetooth ....................74 Copyright © Fibocom Wireless Inc.
  • Page 6 10.2 Packaging and Storage ....................88 Appendix A Acronyms and Abbreviations ..............89 Appendix B GPRS Encoding Scheme ................ 92 Appendix C GPRS Multi-timeslot ................93 Appendix D EDGE Modulation and Encoding Method ..........94 Copyright © Fibocom Wireless Inc.

  • Page 7: Applicable Models

    16GB e.MMC+16Gb LPDDR4X.SDRAM, 4G frequency band, SC128-EAU-10 Android 12, applicable in Europe 32GB e.MMC+24Gb LPDDR4X.SDRAM, 4G frequency band, SC128-EAU-30 Android 12, applicable in Europe 32GB e.MMC+24Gb LPDDR4X.SDRAM, 4G frequency band, SC128-NA-30 Android 12, applicable in North America Copyright © Fibocom Wireless Inc.

  • Page 8: Change History

    Change History Update the antenna reference circuit, Corrected AIR mode sleep power V1.3 (2022-12-24) consumption V1.2 (2022-11-24) Add SC128-NA-30 support. V1.1 (2022-11-02) Add SC128-EAU-30 support. Add charging description. V1.0 (2022-07-12) Initial version Copyright © Fibocom Wireless Inc.

  • Page 9: Foreword

    1.1 Description This document describes the electrical characteristics, RF performance, structure size, application environment, etc. of SC128 series module (hereinafter referred to as module). With the assistance of the document and other instructions, the developers can quickly understand the hardware functions of the module and develop products.
  • Page 10 Supplier’s Declaration of Conformity procedure without a transmitter certified module and a module is added, the host manufacturer is responsible for ensuring that the after the module is installed and operational the host continues to Copyright © Fibocom Wireless Inc.

  • Page 11: Reference Standards

    The device for operation in the band 5150–5250 MHz is only for indoor use to reduce the potential for harmful interference to co-channel mobile satellite systems. 1.2 Reference Standards This product is designed with reference to the following standards: Copyright © Fibocom Wireless Inc.
  • Page 12 Bluetooth Low Energy RF PHY Test Specification, RF-PHY.TS/4.0.0, December 15, 2009 ⚫ Bluetooth Low Energy RF PHY Test Specification, RF-PHY.TS/4.2.0, November 7, 2014 ⚫ Bluetooth Low Energy RF PHY Test Specification, RF-PHY.TS/5.0.2, December 07,2017 ⚫ Copyright © Fibocom Wireless Inc.

  • Page 13: Product Overview

    Android operating system and supports various interfaces such as MIPI/USB/UART/SPI/I C. It is the optimal solution for the core system of wireless smart products. Its corresponding network modes and frequency bands are as follows: Table 1. SC128-EAU supported bands Mode Band GSM850/EGSM900/DCS1800/PCS1900...

  • Page 14: Main Performance

    Class 3 (24 dBm + 1/-3 dB) for WCDMA bands Class 3 (23 dBm ± 2 dB) for LTE FDD bands Class 3 (23 dBm ± 2 dB) for LTE TDD bands R99: GSM/GPRS/EDGE CSD transmission rate: 9.6 kbps, 14.4 kbps features GPRS: Copyright © Fibocom Wireless Inc.
  • Page 15 Support 2.4 G and 5 G WLAN wireless communication, support 802.11a, WLAN features 802.11b, 802.11g, 802.11n and 802.11ac, the maximum rate is up to 433 Mbps Bluetooth features BT5.0 (BR/EDR + BLE) Satellite positioning GPS/GLONASS/BeiDou 4-Lane MIPI_DSI interface LCD Interface Support for 1080P maximally Copyright © Fibocom Wireless Inc.
  • Page 16 C interfaces for TP, camera, sensor, etc. ADC Interfaces One general ADC Support Antenna Interface MAIN antenna, DRX antenna, GNSS antenna, WIFI/BT antenna Physical characteristics Dimensions: 41 (±0.15) mm × 41 (±0.15) mm × 2.85 (max) mm Copyright © Fibocom Wireless Inc.

  • Page 17: Function Block Diagram

    3GPP standard. 2.3 Function Block Diagram Function block diagram shows the main hardware features of the module, including: Baseband ⚫ Wireless transceiver ⚫ Power Management ⚫ Memory ⚫ Copyright © Fibocom Wireless Inc.
  • Page 18 S D R A M VBAT eM M C VRTC P M U AUDIO Control Air Interface Mem ory RESET B aseb an d PWRKEY Multimedia Connectivity UART (U)SIM GPIO VoL key Figure 1. Function block diagram Copyright © Fibocom Wireless Inc.

  • Page 19: Pin Definition

    2.4 Pin Definition 2.4.1 Pin Distribution Figure 2. Pin distribution Copyright © Fibocom Wireless Inc.

  • Page 20: Pin Description

    Table 4. Description of module pins Pin Name Pin No. Pin Description Remarks Power interface VBAT 4,5,6 PI/PO Main power supply VRTC PI/PO RTC power supply VREG_CAM_AVDD_2 Camera power output VREG_CAM_AF_2P8 Camera VIB power output Copyright © Fibocom Wireless Inc.
  • Page 21 162, 163, 164, 170, 171, 176, 177, 178, 182, 190, 191, 196, 197, 204, 205, 228, 229, 230, 231, 232, 235, 236, 237, 246, 250, 253, 275 Battery supply interface Connect the feedback line from the battery VBAT_SNS Battery positive detection end to the module pin separately. Copyright © Fibocom Wireless Inc.
  • Page 22 Reset key Active low CBL_PWR_N Auto power-on pin Active low (U)SIM card interface Active high by UIM2_DET UIM2 hot plugging detection default UIM2_RST UIM2 reset signal UIM2_CLK UIM2 clock signal UIM2_DATA DI/DO UIM2 data signal Copyright © Fibocom Wireless Inc.
  • Page 23 C clock signal For camera only CAM_I2C_SDA0 DI/DO CAM0 I C data signal CAM_I2C_SCL1 CAM1/2 I C clock signal For camera only CAM_I2C_SDA1 DI/DO CAM1/2 I C data signal For peripheral APPS_I2C_SCL APPS_I2C clock signal Copyright © Fibocom Wireless Inc.
  • Page 24 USB 3.1 differential data USB_SS1_RX_M receiving- USB 3.1 differential data USB_SS1_RX_P receiving+ USB 3.1 differential data USB_SS1_TX_M sending- USB 3.1 differential data USB_SS1_TX_P sending+ USB 3.1 differential data USB_SS2_RX_M receiving- USB 3.1 differential data USB_SS2_RX_P receiving+ Copyright © Fibocom Wireless Inc.
  • Page 25 UART0_CTS signal UART0 serial interface RTS UART0_RTS signal Debugging serial interface UART_DBG_RX UART_RX Debugging serial interface UART_DBG_TX UART_TX UART1_RX Serial interface UART1_RX UART1_TX Serial interface UART1_TX SPI Interface SPI_CLK SPI clock SPI_CS SPI chip select Copyright © Fibocom Wireless Inc.
  • Page 26 LCD MIPI-DSI signal MIPI_DSI0_LN1_P MIPI_DSI0_LN2_N MIPI_DSI0_LN2_P MIPI_DSI0_LN3_N MIPI_DSI0_LN3_P LCD backlight brightness PWM control LCD_RST LCD reset signal LCD swipe synchronization LCD_TE signal TP interface TP_INT TP interrupt TP_RST TP reset signal Camera interface MIPI_CSI0_CLK_P Camera MIPI-CSI0 interface. Copyright © Fibocom Wireless Inc.
  • Page 27 MIPI_CSI0_LN3_N MIPI_CSI0_LN3_P MIPI_CSI1_CLK_N MIPI_CSI1_CLK_P MIPI_CSI1_LN0_N MIPI_CSI1_LN0_P Camera MIPI-CSI1 interface. MIPI_CSI1_LN1_N Keep the unused pins MIPI_CSI1_LN1_P unconnected. MIPI_CSI1_LN2_N MIPI_CSI1_LN2_P MIPI_CSI1_LN3_N MIPI_CSI1_LN3_P MCAM_MCLK Camera 1 clock signal MCAM_RST Camera 1 reset signal MCAM_PWDN Camera 1 shutdown signal Copyright © Fibocom Wireless Inc.
  • Page 28 It requires an external audio PA. SPKR_DRV _M Differential lineout output- Headphone right channel HPH_R output It requires to be HPH_GND Headphone reference ground grounded. HPH_L Headphone left channel output HPH_DET Headphone plug detection Antenna interface Copyright © Fibocom Wireless Inc.
  • Page 29 Ordinary GPIO, 1.8V power B-PD: nppukp; domain used internally as GPIO_57 DI/DO bootconfig, which cannot be pulled GPIO_86 DI/DO B-PD: nppukp GPIO_98 DI/DO B-PD: nppukp GPIO_99 DI/DO B-PD: nppukp GPIO_100 DI/DO B-PD: nppukp GPIO_101 DI/DO B-PD: nppukp Copyright © Fibocom Wireless Inc.
  • Page 30 PM_GPIO_3 DI/DO PMIC_GPIO B-PD: nppukp; PM_GPIO_7 DI/DO PMIC_GPIO B-PD: nppukp; PM_GPIO_8 DI/DO PMIC_GPIO LPI interface LPI_GPIO_21 DI/DO Reserved. Don't LPI_GPIO_22 DI/DO LPI GPIO, 1.8V power domain suggest using it as LPI_GPIO_25 DI/DO GPIO. LPI_GPIO_26 DI/DO Copyright © Fibocom Wireless Inc.
  • Page 31 14, 141, 167, 169, 192, 193, 194, 195, 198, 199, 200, 201, 202, 203, 210, 211, 212, 218, 219, 225, 226, 241, Reserved 242, 247, 256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 271, 272, 273, 274 Copyright © Fibocom Wireless Inc.
  • Page 32 GPIO_80 UART_RX SPI_CS_0 GPIO_96 UART_CTS SPI_MISO I2C_SDA GPIO_97 UART_RTS SPI_MOSI I2C_SCL QUP SE4 GPIO_12 UART_TX SPI_SCLK GPIO_13 UART_RX SPI_CS_0 GPIO_14 UART_CTS SPI_MISO I2C_SDA GPIO_15 UART_RTS SPI_MOSI I2C_SCL QUP SE5 GPIO_16 UART_TX SPI_SCLK GPIO_17 UART_RX SPI_CS_0 Copyright © Fibocom Wireless Inc.
  • Page 33 The QUP interfaces in the same group cannot be configured in different types at the same time, for example, UART and I C interfaces. Copyright © Fibocom Wireless Inc.

  • Page 34: Application Interfaces

    VBAT route and avoid significant voltage drop at high currents at maximum transmit power. Table 6. Power supply Parameter Minimum Value Typical Value Maximum Value Unit Copyright © Fibocom Wireless Inc.
  • Page 35 ESR capacitors are required. Regulating LDO or DCDC power supply requires capacitor 220 μF×2 capacitor with a capacitance of no less than 440 μF. Battery power supply requires capacitors with a capacitance of 100-220 μF. Copyright © Fibocom Wireless Inc.

  • Page 36: Vrtc

    Value VRTC output voltage 2.45 3.35 VRTC input voltage (clock works well) 3.35 VRTC input current (clock works well) The VRTC power supply uses the following reference circuit when powered by an external power source: Copyright © Fibocom Wireless Inc.

  • Page 37: Vph_Pwr

    Table 9. Power output Pin Name Default Voltage (V) Drive Current (mA) VDD_2V8 LDO15_1V8 VPH_PWR =VBAT 1000 LDO19_UIM2 1.8/3.0 LDO18_UIM1 1.8/3.0 IOVDD_1V8 LDO17A_3V0 LDO4_SDIO 1.8/2.95 LDO21_SD 2.95 Copyright © Fibocom Wireless Inc.

  • Page 38: Control Signal

    After the module’s VBAT pin is powered on, pull down KEY_PWR_ON pin for 2s–8s to trigger module to start. The keystroke and OC driver power-on reference circuit are designed as follows: Figure 6. Keystroke power-on reference circuit Copyright © Fibocom Wireless Inc.
  • Page 39 The CBL_PWR_N pin is connected to the ground through a 1K resistor, and the module can be started up automatically after power-on. The following figure shows the reference circuit for automatic startup upon power-on. Figure 8. CBL power-on reference circuit Power on sequence is shown as follows: Copyright © Fibocom Wireless Inc.

  • Page 40: Power-Off And Reset

    9s ＜ T ＜ 15s KEY_PWR_N LDO15_1V8 Other LDOs Figure 10. Power-off timing When the system is abnormal or crashes, you can forcibly reset the module. The normal power-off method is recommended in normal cases, because forced reset may Copyright © Fibocom Wireless Inc.

  • Page 41: Sleep/Wakeup

    USB supports OTG function and HUB expansion interface. The pin definition of the USB interface is as follows: Table 11. USB 3.1 pin definition Pin Name Pin No. Description Remarks USB 3.1 differential USB_SS1_RX_M data receiving- Copyright © Fibocom Wireless Inc.
  • Page 42 Table 12. USB 2.0 pin definition Pin Name Pin No. Description Remarks USB_VBUS PI/PO USB 5V power supply USB 2.0 differential USB_DM AI/AO data signal- USB 2.0 differential USB_DP AI/AO data signal+ USB_ID Reserved USB 2.0 Device/Host Copyright © Fibocom Wireless Inc.
  • Page 43 USB_DP and USB_DM are high-speed differential signal lines. The highest transmission rate is ⚫ 480Mbps. Please pay attention to the following requirements during PCB layout: USB_DP and USB_DM signal cables should be parallel and equal in length (differential cable ◦ Copyright © Fibocom Wireless Inc.

  • Page 44: Uart

    Table 13. UART pin definition Pin Name Pin No. Description Remarks UART0 serial interface data sending UART0_TX signal UART0 serial interface data receiving UART0_RX signal UART0_CTS UART0 serial interface CTS signal UART0_RTS UART0 serial interface RTS signal Copyright © Fibocom Wireless Inc.

  • Page 45: Spi

    Table 14. SPI pin definition Pin Name Pin No. Description Remarks SPI_CLK SPI clock SPI_CS SPI chip select SPI_MISO SPI master in slave out SPI_MOSI SPI master output slave input Copyright © Fibocom Wireless Inc.
  • Page 46 SD card data bit 0 SD_CMD DI/DO SD card command interface SD_CLK SD card clock LDO21_SD LDO L21 2.9 V power output LDO L4 SD pull-up power LDO4_SDIO output SD interface reference circuit design is as follows: Copyright © Fibocom Wireless Inc.

  • Page 47: Sim

    TVS tube should be a device with a parasitic capacitance less than 0.5 3.7 SIM The module provides two (U) SIM card interfaces that support dual card dual standby. The pin definition is as follows: Copyright © Fibocom Wireless Inc.
  • Page 48 （U）SIM2 reset UIM2_RST （U）SIM2 clock UIM2_CLK （U）SIM2 data UIM2_DATA DI/DO SIM reference circuit design is as follows: VIO_1P8 Connector Module UIM_VDD SIM IN UIM_DATA DATA UIM_DET UIM_CLK SIM OUT UIM_RST 18pF/NC Figure 14. SIM reference circuit Copyright © Fibocom Wireless Inc.

  • Page 49: Gpio

    B-PD: nppukp GPIO_99 B-PD: nppukp GPIO_100 B-PD: nppukp GPIO_101 B-PD: nppukp GPIO_102 B-PD: nppukp GPIO_103 B-PD: nppukp GPIO_104 B-PD: nppukp GPIO_105 B-PD: nppukp GPIO_107 B-PD: nppukp GPIO_111 B-PD: nppukp GPIO_112 B-PD: nppukp PM_GPIO_4 B-PD: nppukp Copyright © Fibocom Wireless Inc.

  • Page 50: I 2 C

    Dedicated for TP TP_I2C_SDA 150, 158 TP I C data signal C clock signal of camera CAM_I2C_SCL0 For camera only CAM_I2C_SDA0 C data signal of camera 0 C clock signal of camera CAM_I2C_SCL1 For camera only Copyright © Fibocom Wireless Inc.

  • Page 51: Adc

    3.11 Battery Supply Interface Table 21. Battery interface pin definition Pin Name Description Remarks Name VBAT 4,5,6 Main power supply Battery positive Connect the feedback line from the VBAT_SNS detection battery end to the module pin Copyright © Fibocom Wireless Inc.

  • Page 52: Charging Description

    Table 22. Charge interface parameters Minimum Typical Maximum Explain Parameters Unit Value Value Value USB maximum input voltage USB operating input voltage Trickle charge to pre-charge TRKL threshold Trickle charge current TRKL Copyright © Fibocom Wireless Inc.
  • Page 53 =1.3A, and it is recommended that the maximum current should not exceed 1.44A. 3. The module supplies a regulated 5.0V output (sourced by the battery) at the USB_IN pin for powering peripherals compliant with the USB OTG specifications. Copyright © Fibocom Wireless Inc.

  • Page 54: Motor Driver Interface

    The screen interface is based on MIPI_DSI standard and supports one set of 4-Lane high-speed differential data transmission. It supports 1080P resolution. Table 24. LCD pin definition Pin Name Description Remarks MIPI_DSI0_CLK_N MIPI_DSI0_CLK_P MIPI_DSI0_LN0_N MIPI_DSI0_LN0_P MIPI_DSI0_LN1_N LCD MIPI-DSI signal MIPI_DSI0_LN1_P MIPI_DSI0_LN2_N MIPI_DSI0_LN2_P MIPI_DSI0_LN3_N MIPI_DSI0_LN3_P LCD backlight brightness PWM Copyright © Fibocom Wireless Inc.
  • Page 55 LED_A1_P VPH_PWR LED_A2_P LCD_PWM BL Driver LED_K1_N LCD_BL_EN LED_K2_N LCD_RST_N LCD_RST_N GPIO LCD_ID LCD_TE LCD_TE MIPI_DSI_LN3_P MIPI_D3P MIPI_DSI_LN3_N MIPI_D3N MIPI_DSI_LN2_P MIPI_D2P MIPI_DSI_LN2_N MIPI_D2N MIPI_DSI_LN1_P MIPI_D1P MIPI_DSI_LN1_N MIPI_D1N MIPI_DSI_CLK_P MIPI_CLKP MIPI_DSI_CLK_N MIPI_CLKN MIPI_DSI_LN0_P MIPI_D0P MIPI_DSI_LN0_N MIPI_D0N Copyright © Fibocom Wireless Inc.
  • Page 56 TP. The pin definition of the module is shown in the following table: Table 25. TP pin definition Pin Name Pin No. Description Remarks VDD_2V8 2.8V voltage output LDO15_1V8 LDO L15 1.8V power output Copyright © Fibocom Wireless Inc.

  • Page 57: Camera

    Lane) or three (4 Lane + 2 Lane + 1 Lane) cameras. The maximum resolution is 25 MP. The pin definition of camera interface is as follows: Table 26. Camera interface pin definition Pin Name Pin No. 4-lane + 2-lane + 1-lane MIPI_CSI0_CLK_P 4-lane camera MIPI-CSI0 interface. Keep the unused pins unconnected. MIPI_CSI0_CLK_N Copyright © Fibocom Wireless Inc.
  • Page 58 MIPI_CSI1_LN0_P MIPI_CSI1_LN1_N MIPI_CSI1_LN1_P MIPI_CSI1_LN3_N MIPI_CSI1_LN3_P 1-lane camera CSI2 interface (LN3 as MIPI_CLK) MIPI_CSI1_LN2_N MIPI_CSI1_LN2_P MCAM_MCLK Camera 0 clock signal MCAM_RST Camera 0 reset signal MCAM_PWDN Camera 0 shutdown signal SCAM_MCLK Camera 1 clock signal Copyright © Fibocom Wireless Inc.

  • Page 59: Camera 0

    The module does not have this power supply, so it needs to be provided by VDD_1V2 an external high-power noise suppression ratio LDO 3.15.1 Camera 0 The reference circuit design of camera 0 is as follows: Copyright © Fibocom Wireless Inc.

  • Page 60: Camera 1

    MIPI_CSI_LN3_N DAT3_N MIPI_CSI_LN2_P DAT2_P MIPI_CSI_LN2_N DAT2_N MIPI_CSI_LN1_P DAT1_P MIPI_CSI_LN1_N DAT1_N MIPI_CSI_LN0_P DAT0_P DAT0_N MIPI_CSI_LN0_N Figure 17. Reference circuit design of camera 0 3.15.2 Camera 1 The reference circuit design of camera 1 is as follows: Copyright © Fibocom Wireless Inc.

  • Page 61: Camera 2

    CAM_I2C_SCL CAM_I2C_SDA MIPI_CSI_CLK_P CLK_P MIPI_CSI_CLK_N CLK_N MIPI_CSI_LN1_P DAT1_P MIPI_CSI_LN1_N DAT1_N MIPI_CSI_LN0_P DAT0_P MIPI_CSI_LN0_N DAT0_N Figure 18. Reference circuit design of camera 1 3.15.3 Camera 2 The reference circuit design of camera 2 is as follows: Copyright © Fibocom Wireless Inc.

  • Page 62: Design Considerations

    MIPI routing is recommended to be designed in the inner layer, and connected using GND in three ⚫ dimensions; The MIPI signal line needs to be controlled with a 100 Ω differential impedance with tolerance ⚫ ±10%; Copyright © Fibocom Wireless Inc.

  • Page 63: Audio

    The module supports analog audio interface, and has 3 inputs and 3 outputs. Pin definition is as follows: Table 27. Audio interface pin definition Pin Name Pin No. Description Remarks MIC1_P Main MIC input+ MIC1_M Main MIC input- Copyright © Fibocom Wireless Inc.
  • Page 64 It is recommended to use receiver with 32 Ω impedance; ⚫ Reduce noise and improve audio quality, the following approaches are recommended: ⚫ Keep audio PCB routing away from the antenna and high-frequency digital signal; ◦ Copyright © Fibocom Wireless Inc.

  • Page 65: Mic Circuit Design

    3.16.2 MIC Circuit Design It is recommended to use a silicon MIC, and the reference design circuit is as follows: Module MIC_P MIC_M Figure 20. Microphone circuit design 3.16.3 Receiver Circuit Design Figure 21. Receiver circuit design Copyright © Fibocom Wireless Inc.

  • Page 66: Headphone Interface Circuit Design

    To facilitate the subsequent software upgrade and product debugging, please reserve this pin. The reference circuit is as follows: VIO_1V8 Module FORCE_BOOT Figure 23. Design of forced download interface Copyright © Fibocom Wireless Inc.

  • Page 67: Antenna Interface

    Table 28. MAIN/DRX antenna interface definition Pin Name Pin No. Description Remarks ANT_MAIN AI/AO 2G/3G/4G main antenna interface ANT_DRX 4G diversity antenna interface 4.1.1 Operating Bands Table 29. SC128-EAU operating band Mode Band TX (MHz) RX (MHz) 824-849 869-894 880-915 925-960 1800 1710-1785...
  • Page 68 791-821 Band 28 703-748 758-803 Band 38 2570-2620 2570-2620 LTE TDD Band 40 2300-2400 2300-2400 Band 41 2496-2690 2496-2690 Table 30. SC128-NA operating band Mode Band TX（MHz） RX（MHz） Band 2 1850-1910 1930-1990 Band 4 1710-1755 2110-2155 Band 5 824-849 869-894...

  • Page 69: Circuit Reference Design

    TVS device welding position at the antenna interface. The reference circuit is shown below: Module Main_Ant enna ANT_MAIN Diversity_Antenna ANT_DRX Figure 24. Antenna reference circuit 4.2 WIFI/BT Antenna Microstrip route is recommended for the WIFI/BT RF route, with insertion loss within 0.2dB and impedance at 50Ω. Copyright © Fibocom Wireless Inc.

  • Page 70: Operating Bands

    5170 - 5835 2402 - 2480 4.2.2 Circuit Reference Design The reference circuit of WIFI/BT antenna is shown as follows: WIFI/BT_Antenna Module ANT_WIFI/BT Figure 25. Antenna reference circuit 4.3 GNSS Antenna GNSS supports GPS, GLONASS, and BeiDou. Copyright © Fibocom Wireless Inc.

  • Page 71: Gnss Operating Frequency

    GNSS RF route, with insertion loss within 0.2dB and impedance at 50Ω. The GNSS antenna reference design is shown as follows: G N S S _A ntenna M od ul e A N T _G N S S Figure 26. GNSS passive antenna reference circuit Copyright © Fibocom Wireless Inc.

  • Page 72: Antenna Requirements

    The module provides four antenna interfaces: main, diversity, WIFI/BT and GNSS. The antenna requirements are as follows: Table 35. Antenna requirements Module Antenna Requirement Standard Antenna Requirement VSWR: <2 (typical) Gain (dBi): 1 Max input power (W): 5 Copyright © Fibocom Wireless Inc.
  • Page 73 Passive antenna gain: > 0 dBi Active antenna NF: < 1.5 dB (typical) Active antenna gain: > -2 dBi Isolation between GPS and main antenna > 20 dB Isolation between WIFI and LTE antenna > 20 dB Copyright © Fibocom Wireless Inc.

  • Page 74: Rf Pcb Layout Design Guide

    50 Ω. Microstrip cable complete structure ⚫ Figure 28. Two-layer PCB microstrip line structure Coplanar waveguide complete structure ⚫ Figure 29. Two-layer PCB coplanar waveguide structure Copyright © Fibocom Wireless Inc.
  • Page 75 The distance between the RF pin and the RF connector should be as short as possible. At the same ⚫ time, avoid the right-angle route. The recommended route angle is 135 degrees. Copyright © Fibocom Wireless Inc.
  • Page 76 RF performance; and the distance between the ground holes and the signal line should be at least 2 times of the ⚫ line width (2*W). Copyright © Fibocom Wireless Inc.

  • Page 77: Wifi And Bluetooth

    BLE can accommodate 40 channels. Its main features are as follows: BT 5.0 + BR/EDR + BLE ⚫ Support for ANT protocol ⚫ Support for BT-WLAN coexistence operation, including optional concurrent receive ⚫ Up to 3.5 piconets (master, slave and page scanning) ⚫ Copyright © Fibocom Wireless Inc.
  • Page 78 1 Mbit/s > 80 Kbit/s BT2.0 + EDR 3 Mbit/s > 80 Kbit/s BT3.0 + HS 24 Mbit/s Refer to 3.0+HS BT4.2 LE 24 Mbit/s Refer to 4.2 LE BT5.0 24 Mbit/s Refer to 5.0 Copyright © Fibocom Wireless Inc.

  • Page 79: Gnss

    Test condition: 3.8 V power supply, environment temperature 25°C. Table 37. GNSS positioning performance Parameter Description Typical Result Unit Acquisition -145 Sensitivity Tracking -157 C/No -130 dBm dB-Hz Cold Start TTFF Warm Start Hot Start Static accuracy (95% @- 130dbm) Copyright © Fibocom Wireless Inc.

  • Page 80: Electricity, Reliability And Rf Performance

    3.35 Operating °C temperature Storage temperature °C 8.2 Operating Current Test condition: 3.8 V power supply, environment temperature 25°C. Table 39. SC128-EAU operating current Parameter Description Condition Typical Result Unit Static leakage Leakage current before power on current Normal power-...
  • Page 81 GSM850@ Gamma=3 (1UL/4DL) GSM850@ Gamma=3 (4UL/1DL) EGSM900@ Gamma=3 (1UL/4DL) EGSM900@ Gamma=3 (4UL/1DL) GPRS data GPRS-RMS DCS1800@ Gamma=3 (1UL/4DL) RMS Current DCS1800@ Gamma=3 (4UL/1DL) PCS1900@ Gamma=3 (1UL/4DL) PCS1900@ Gamma=3 (4UL/1DL) EGPRS data GSM850@ Gamma=6 (1UL/4DL) EGPRS-RMS Copyright © Fibocom Wireless Inc.
  • Page 82 Band4@max power (10MHz, 1RB) FDD data Band5@max power (10MHz, 1RB) RMS Current LTE-RMS Band7@max power (10MHz, 1RB) Band8@ max power (10MHz,1RB) Band20@max power (10MHz, 1RB) Band28@max power (10MHz, 1RB) TDD data Band38@ max power (10MHz,1RB) Copyright © Fibocom Wireless Inc.
  • Page 83 Parameter Description Condition Typical Result Unit RMS Current Band40@max power (10MHz, 1RB) Band41@max power (10MHz, 1RB) Table 40. SC128-NA operating current Parameter Description Condition Typical Result unit Static leakage Leakage current before power on current Normal power-off Power off leakage current...

  • Page 84: Rf Transmit Power

    850 (GMSK) 33±2 5±5 900 (GMSK) 33±2 5±5 1800 (GMSK) 30±2 0±5 1900 (GMSK) 30±2 0±5 850 (8PSK) 27.0±3 5±5 900 (8PSK) 27.0±3 5±5 1800 (8PSK) 26.0±3 0±5 1900 (8PSK) 26.0±3 0±5 Band 1 24+1/-3 <-49 Copyright © Fibocom Wireless Inc.
  • Page 85 <-39 Band 25 23.0±2 <-39 Band 26 23.0±2 <-39 Band 28 23.0±2 <-39 Band 66 23.0±2 <-39 Band 71 23.0±2 <-39 Band 38 23.0±2 <-39 LTE TDD Band 40 23.0±2 <-39 Band 41 23.0±2 <-39 Copyright © Fibocom Wireless Inc.

  • Page 86: Rf Receiver Sensitivity

    The sensitivity of each frequency band of the module is shown in the following table: Test condition: 3.8 V power supply, environment temperature 25°C, LTE power test performed with 10 MHz bandwidth. For RB configuration, see 3GPP standard. Table 42. SC128-EAU RF receiving sensitivity Mode Band...

  • Page 87: Electrostatic Protection

    -94.8 Band 38 -96.3 -96.3 -96.3 LTE TDD Band 40 -96.3 -96.3 -96.3 Band 41 -94.5 -97.5 -94.3 Table 43. SC128-NA RF receiving sensitivity 单位 Mode Band Primary Diversity PRX+Div 3GPP Requirement Band 2 -98.5 -100 -96.3 Band 4 -96.5 -98.5...
  • Page 88 The following table lists ESD performance parameters (Temperature: 25°C, Humidity: 45%–65%): Table 44. ESD performance Test Point Contact Discharge Air Discharge Unit VBAT, GND ±5 ±10 Antenna Interface ±5 ±10 Other interfaces ±0.5 ±1 Copyright © Fibocom Wireless Inc.

  • Page 89: Structure Specifications

    9 Structure Specifications 9.1 Product Appearance Figure 32. Product appearance 9.2 Structural Dimensions Figure 33. Structural dimensions Copyright © Fibocom Wireless Inc.

  • Page 90: Recommended Pcb Soldering Pad Design

    9.3 Recommended PCB Soldering Pad Design For PCB soldering pad and stencil design, please refer to Fibocom_SC128_SMT Design Guide. 9.4 Recommended Thermal Design For recommended module and peripheral thermal design, see Fibocom_SC128_Thermal Design Guide. Copyright © Fibocom Wireless Inc.

  • Page 91: Production And Storage

    10 Production and Storage 10.1 SMT See Fibocom_SC128_SMT Design Guide. 10.2 Packaging and Storage See Fibocom_SC128_SMT Design Guide. Copyright © Fibocom Wireless Inc.

  • Page 92: Appendix A Acronyms And Abbreviations

    Maximum Load Current Light Emitting Diode Least Significant Bit Long Term Evolution Mobile Equipment Mobile Station Mobile Terminated Printed Circuit Board Protocol Data Unit Phase Shift Keying Quadrature Amplitude Modulation QPSK Quadrature Phase Shift Keying Copyright © Fibocom Wireless Inc.
  • Page 93 Minimum Voltage Value VIHmax Maximum Input High Level Voltage Value VIHmin Minimum Input High Level Voltage Value VILmax Maximum Input Low Level Voltage Value VILmin Minimum Input Low Level Voltage Value VImax Absolute Maximum Input Voltage Value Copyright © Fibocom Wireless Inc.
  • Page 94 Maximum Output High Level Voltage Value VOHmin Minimum Output High Level Voltage Value VOLmax Maximum Output Low Level Voltage Value VOLmin Minimum Output Low Level Voltage Value VSWR Voltage Standing Wave Ratio WCDMA Wideband Code Division Multiple Access Copyright © Fibocom Wireless Inc.

  • Page 95: Appendix B Gprs Encoding Scheme

    Appendix B GPRS Encoding Scheme Table 46. GPRS encoding scheme Encoding Method CS-1 CS-2 CS-3 CS-4 Rate Pre-coded USF Radio Block excl. USF and BCS Tail Coded Bits Punctured Bits Data Rate Kb/s 9.05 13.4 15.6 21.4 Copyright © Fibocom Wireless Inc.

  • Page 96: Appendix C Gprs Multi-Timeslot

    Active timeslot represents the total number of timeslots that the GPRS device can use for both uplink and downlink communications at the same time. Table 47. Multislot allocation of different classes Multislot Class Downlink Slots Uplink Slots Active Slots Copyright © Fibocom Wireless Inc.

  • Page 97: Appendix D Edge Modulation And Encoding Method

    MCS-3 GMSK 14.8kbit/s 29.6kbit/s 59.2kbit/s MCS-4 GMSK 17.6kbit/s 35.2kbit/s 70.4kbit/s MCS-5 8-PSK 22.4kbit/s 44.8kbit/s 89.6kbit/s MCS-6 8-PSK 29.6kbit/s 59.2kbit/s 118.4kbit/s MCS-7 8-PSK 44.8kbit/s 89.6kbit/s 179.2kbit/s MCS-8 8-PSK 54.4kbit/s 108.8kbit/s 217.6kbit/s MCS-9 8-PSK 59.2kbit/s 118.4kbit/s 236.8kbit/s Copyright © Fibocom Wireless Inc.

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