Fibocom FM101-CG Hardware Manual

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FM101-CG

Hardware Guide

V1.0

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Page 1 FM101-CG Hardware Guide V1.0...
Page 2 Copyright Copyright ©2021 Fibocom Wireless Inc. All rights reserved. Without the prior written permission of the copyright holder, any company or individual is prohibited to excerpt, copy any part of or the entire document, or transmit the document in any form.
Page 8: Foreword
1.1. Document Description This document describes the electrical characteristics, RF performance, dimensions and application environment, etc. of the FM101-CG wireless module. With the assistance of this document and other related documents, application developers can quickly understand the hardware functions of the FM101-CG module and develop product hardware.
Page 9 Keep mobile device away from flammable gases. Turn off the mobile device when you are near to gas stations, oil depots, chemical plants or explosive workplaces. There are potential safety hazards when operating electronic equipment in any potentially explosive area. Copyright © Fibocom Wireless Inc.
Page 10: Product Overview
TDD-LTE. The maximum downlink rate supported in CA mode is 261 Mbps, and the maximum uplink rate is 30 Mbps. FM101-CG is designed with M.2 package and is applicable to various scenarios such as CPE, VR/AR, gateway, Internet TV set-top box, and intelligent monitoring.
Page 11: Other Key Features
A group of USB 3.0 superspeed (SS) interfaces with data transmission rate up to 5 Gbps Compatible with USB 2.0 highspeed (HS) interfaces, with data USB interface transmission rate up to 480 Mbps Used for AT command transmission, data transmission, software debugging, software upgrading, etc. Copyright © Fibocom Wireless Inc.
Page 12 3GPP standards. Storage temperature: –40°C to 90°C The storage temperature range of the module when the module is powered off. Software Through USB interface/FOTA upgrade Environmental RoHS and halogen-free standards Copyright © Fibocom Wireless Inc.
Page 13: Supported Ca Combinations
Table 5. CA combinations supported by FM101-CG FM101-CG Combination 2DLCA B42C B48C 2.4. Functional Block Diagram Functional block diagram shows the main hardware functions of the FM101-CG module, including the baseband and RF functions. Baseband section • PMIC • LPDDR2 •...
Page 14: Evaluation Board
2. Product Overview Figure 1. Functional block diagram 2.5. Evaluation Board Fibocom provides EVB-M.2 evaluation board to facilitate module debug and testing. For how to use it, see FIBOCOM EVB-M2 User Guide. Copyright © Fibocom Wireless Inc.
Page 15: Pin Definition
3. Pin Definition 3. Pin Definition 3.1. Pin Distribution The FM101-CG module uses M.2 packaging and have 75 pins in total. The following figure shows the pin mapping. Figure 2. Pin mapping Copyright © Fibocom Wireless Inc.
Page 16: Pin Function
3. Pin Definition 3.2. Pin Function The FM101-CG module pin function is described in the following table. Table 6. M.2 pin function description Reset Pin Name Pin Description Type Number Status NC, WWAN-PCIe is configured for FM101-CG module, USB_SS CONFIG_3 interface type M.2 module...
Page 17 Notch groove Notch Notch groove Notch Notch groove CMOS I2S_SCK S serial clock, reserved 1.8V NC, WWAN-PCIe is configured for FM101-CG module, USB_SS CONFIG_0 interface type M.2 module S serial data receiving, CMOS I2S_RX reserved 1.8V CMOS WOWWAN# Wakeup host 1.8V...
Page 18 3V/1.8V Ultra high speed USB data USB_SS_RX_ receiving negative SIM card 1 power supply, CMOS UIM1_PWR 3V/1.8V 3V/1.8V Ultra high speed USB data USB_SS_RX_P AI receiving positive Peripheral wake-up module CMOS WAKEUP_IN control signal 1.8V Copyright © Fibocom Wireless Inc.
Page 19 PCIe data receiving negative CMOS UIM2_PWR SIM card 2 power supply 3V/1.8V PERp0 PCIe data receiving positive Module PCIe interface reset. CMOS Active low, and an external pull- PERST# 3.3V/1.8V up resistor is required Power Ground supply Copyright © Fibocom Wireless Inc.
Page 20 CMOS GRFC7* reserved 1.8V LTE/WLAN common control COEX3/GPIO CMOS signal 1.8V CMOS Tuned antenna control bit 1, GRFC6* 1.8V reserved CMOS LTE and WLAN share a serial COEX_UART_ 1.8V port receiving signal line, RXD* reserved Copyright © Fibocom Wireless Inc.
Page 21 A card is available at 1.8V high level by default CMOS RESET_N Module reset. Active low 1.8V I2S_MCLK I2S MCLK clock output GND, WWAN–PCIe is configured for the FM101-CG module, CONFIG_1 USB_SS interface type M.2 module Power Power input supply Power Ground supply...
Page 22 Type Number Status Power Power input supply NC, WWAN-PCIe is configured for FM101-CG module, USB_SS CONFIG_2 interface type M.2 module Pins marked with * are reserved functions or under development.  Unused pins remain floating. Table 7. I/O parameter description...
Page 23: Electrical Characteristics
The operating limit voltage is the normal operating voltage range of the module, beyond which the module will have an abnormal performance. 4.1.1. Absolute Limit Voltage The following table describes the absolute limit voltage ranges of FM101-CG module. Table 8. Absolute limit voltage range Minimum...
Page 24: Power Consumption
1.8/2.85 1.85/2.928 4.2. Power Consumption The power consumption of FM101-CG module measured under 3.8 V power supply is described in the following table. For AT commands used for USB sleep and wakeup, see Fibocom_FM101_AT Commands User Manual. Table 11. Power consumption...
Page 25 4. Electrical Characteristics Table 12. 2CA power consumption Transmitting Band@FRB@Data 2CA Typical Combination Typical Current (mA) Transmission Status B42+B42 @+21dBm B48+B48 @+21dBm Copyright © Fibocom Wireless Inc.
Page 26: Functional Interface
GND, all GND pins must be grounded 45, 51, 57, 71, 73 Power Input The FM101-CG module is powered on through the VBAT pin. The following figure shows the recommended power supply design. Figure 3. Recommended power supply design Copyright © Fibocom Wireless Inc.
Page 27 2500/2600 MHz band interference. Stable power supply ensures proper operating of the FM101-CG module. During design, ensure that the power supply ripple is less than 300 mV (circuit ESR < 100 mΩ). When the module is working in maximum load, ensure that the power supply voltage is not lower than 3.135V.
Page 28: Control Interface
3.3 V or 1.8 V, the module is powered on. When the AP (Application Processor) controls the power-on of the module, it is recommended to use GPIO with the reset status of low or internal pull-down. Copyright © Fibocom Wireless Inc.
Page 29: Power-On Sequence
40ms. The power-on control is automatically pulled up inside the module. 5.2.1.3. Power Off When the module is powered on, pull down FCPO#, and the module is powered off. The Copyright © Fibocom Wireless Inc.
Page 30: Reset
5. Functional Interface recommended power-off sequence is shown in the following figure. Figure 7. Recommended power-off sequence 5.2.2. Reset FM101-CG module can be reset by hardware and software. Table 16. Reset methods Reset Method Action Hardware reset Pull down the RESET_N pin for 0.5s or...
Page 31: Led1
The RESET pin can be internally pulled up, without external pull-up. Keep the pin floating when it is not used. 5.3. LED1# The LED1# signal is used to indicate the operating status of the module, as described in the table below. Copyright © Fibocom Wireless Inc.
Page 32: U)Sim Card Interface
The LED driver circuit is shown in the following figure. Figure 11. Reference circuit of network status indicators 5.4. (U)SIM Card Interface FM101-CG module has built-in (U)SIM card interface, and supports 1.8 V and 3.0 V (U)SIM cards. 5.4.1. (U)SIM Pin Definition (U)SIM pin definition is described in the following table.
Page 33: U)Sim Interface Circuit
The following figure shows the reference design circuit. When (U)SIM card is inserted, USIM_DET pin is at high level, when (U)SIM card is removed, USIM_DET pin is at low level. Copyright © Fibocom Wireless Inc.
Page 34: U)Sim Card Hot Plug
Figure 12. (U)SIM card slot with card detection signal 5.4.3. (U)SIM Card Hot Plug The FM101-CG series module supports the (U)SIM card hot plug function. The module detects the status of the USIM1_DET/USIM2_DET pin to determine whether a (U)SIM card is inserted or removed.
Page 35: U)Sim Design Requirements
Refer to the specification of (U)SIM card slot for PCB packaging design. The PCB • surface layer under the 6 contactors should be keepout to avoid short circuit caused by the contactor pricked to the copper plane. Copyright © Fibocom Wireless Inc.
Page 36: Usb Interface
5. Functional Interface 5.5. USB Interface FM101-CG module supports USB 3.0 (5 Gb/s) ultra-high-speed data transmission, and is also compatible with USB high-speed (480 Mb/s) for download, debugging, data transmission and other functions. USB pin definition is shown in the following table.
Page 37: Usb Routing Rules
USB_SS_TX_P/USB_SS_TX_M and USB_SS_RX_P/USB_SS_RX_M are two pairs of • differential signal lines, and their differential impedance should be controlled as 90Ω±7Ω. Traces in the differential pair must be parallel with equal length, and the length • Copyright © Fibocom Wireless Inc.
Page 38: I 2 C Interface
I2C_SCL C clock signal 5.7. PCM and I S Digital Audio Interface The FM101-CG module provides a digital audio interface (PCM/I S) for communication with external codec and other digital audio devices. 5.7.1. PCM Interface Definition PCM interface signals include transmission clock PCM_CLK, frame synchronization signal PCM_SYNC, and input and output PCM_IN/PCM_OUT.
Page 39: Pcm Application Circuit
TBD bit. The PCM channel can also be configured as I S interface. Please contact Fibocom technical support for adjustment. 5.7.2. PCM Application Circuit The application reference circuit of the external Codec chip of the PCM interface is shown in the following figure.
Page 40: Pcie Interface
5. Functional Interface Figure 14. Reference circuit of the PCM interface external Codec chip 5.8. PCIe Interface FM101-CG module supports a group of PCIe GEN 2.0 x 1 lanes. Table 23. PCIe pin definition Pin Name Description Number PCIe data transmitting signal negative...
Page 41: Pcie Routing Rules
5. Functional Interface 5.8.1. PCIe Routing Rules FM101-CG module supports PCIe 2.0 x1, including three differential pairs: transmitting pair TXP/N, receiving pair RXP/N and clock pair CLKP/N. PCIe can achieve the maximum transmission rate of 5GT/s. The following rules must be...
Page 42: Pcie Application Circuit
Figure 16. Length match design of PCIe difference pair 5.8.2. PCIe Application Circuit Please refer to the following figure for PCIe application circuit, and Fibocom_FM101- NA_Reference Design for details. Copyright © Fibocom Wireless Inc.
Page 43: Flight Mode Control Interface
Table 24. W_DISABLE_N pin description Pin Name Pin Number Description Module flight mode control (internal W_DISABLE_N pulled up by default) FM101-CG module supports two ways as described in the following table to enter flight mode: Copyright © Fibocom Wireless Inc.
Page 44: Sleep/Wakeup Interface
I/O Pin Number Description WAKEUP_IN DI External device wake-up module, active low by default The module supports setting wake-up mode and waking up active level through AT commands. For details of configuration method, see Fibocom_FM101-NA_AT Commands User Manual. Copyright © Fibocom Wireless Inc.
Page 45: Radio Frequency
6.1. RF Interface 6.1.1. RF Interface Function The FM101-CG module supports three RF connectors used for external antenna connection. As shown in the following figure, "M" refers to the RF main antenna for receiving and transmitting RF signals; "D" refers to the diversity antenna for receiving diversity RF signals;...
Page 46: Rf Connector Dimensions
6. Radio Frequency 6.1.3. RF Connector Dimensions FM101-CG module adopts standard M.2 module RF connectors, the model name is 818004607 from ECT company, and the connector dimensions are 2 mm × 2 mm × 0.6 mm, as shown in the following figure.
Page 47: Operating Bands
3600~3800 3600~3800 Band 48 LTE TDD 3550–3700 3550–3700 6.3. Transmitting Power The following table describes the RF output power of FM101-CG module. Table 28. Output power Band Minimum Value Maximum Value LTE TDD < –40 dBm 23 dBm ± 2 dB...
Page 48: Receiving Sensitivity
Typ (dBm) Band 42 Band 43 LTE TDD Band 48 6.5. GNSS Receiving Performance The GNSS of FM101-CG module supports GPS/GLONASS/BDS/GALILEO, and the performance parameters of GNSS are shown in the following table. Table 30. GNSS performance parameters Indicator Description Result...
Page 49: Antenna Design
6. Radio Frequency 6.6. Antenna Design Antenna indicators The antenna requirements for FM101-CG module are described in the following table. Table 31. Module Antenna Requirements FM101-CG module main antenna requirements VSWR: ≤ 2 Input power: > 28dBm Input impedance: 50Ω...
Page 50: Impedance Design
"3W principle". Figure 21. 3W principle 6.7.4. Impedance Design for Four-layer Board The thickness of four-layer board is 1.0 mm. RF line is routed on Lay 1, and reference Copyright © Fibocom Wireless Inc.
Page 51 The thickness from Lay 1 to Lay 2 is 65 um, RF trace is 4 mil, and the distance from RF to GND is greater than 3 times of RF line width. The blue area is Lay 1 and the red area is Lay 2, the highlighted part is RF line. Copyright © Fibocom Wireless Inc.
Page 52: Main Antenna Design
6.8. Main Antenna Design 6.8.1. External Antenna The external antenna has good performance. The antenna is placed outside the complete machine, the antenna space is large, and the antenna performance is not easy to be Copyright © Fibocom Wireless Inc.
Page 53: Internal Antenna
Avoid using long FPC. If a long FPC is required, add grounding shields on both • sides. Routing When connecting RF routing, apply circular arc treatment at the turning, take • grounding and pay attention to characteristic impedance. Copyright © Fibocom Wireless Inc.
Page 54: Internal Antenna Classification
The distance between the signal point and GND point should be at least 4 mm to 5 mm. The signal point and GND point can be put in different places, and more GND points mean more choices during antenna design. Copyright © Fibocom Wireless Inc.
Page 55 The feeding point must be greater than 2mm × 3mm. Try to place it at the edge of the PCB board, and adopt round shape. Square with rounded corners is also preferred. The distance between feeding point pad and ground should be equal to or greater than 1mm. Copyright © Fibocom Wireless Inc.
Page 56 There is one feeding point between the antenna and main board, which is module output. It is recommended to design the antenna on the top of the device. The following figure shows the monopole antenna design. Copyright © Fibocom Wireless Inc.
Page 57 The height and area requirements for monopole antenna are described in the • following table. Operating Band Height Area GSM/DCS > 5 mm > 35 mm × 7 mm GSM/DCS/PCS > 6 mm > 35 mm × 8 mm Copyright © Fibocom Wireless Inc.
Page 58 Monopole antenna and PIFA antenna. Antenna area Ant connector PCB motherboard Figure 30. Location of signal point and GND point Antenna space requirement: monopole < IFA < PIFA. For other requirements, refer to the PIFA and monopole requirements. Copyright © Fibocom Wireless Inc.
Page 59: Surrounding Environment Design Of Internal Antenna
Monopole antenna: The distance between battery and antenna is equal to or ◦ greater than 5 mm. PIFA antenna: The distance between battery and antenna is equal to or ◦ greater than 3 mm. Do not put the battery connector right beside the antenna. • Copyright © Fibocom Wireless Inc.
Page 60: Location Of Large Components In Antenna Area
6.8.4. Common Problems of Internal Antenna Overall Design Factors that would affect transmitting performance As the internal antenna is sensitive to the nearby medium, so the design of shell is • closely related to antenna performance. Copyright © Fibocom Wireless Inc.
Page 61: Diversity And Mimo Antenna Design
• division multiplexing technology and receive data from the multiple different paths in parallel to improve the receiving throughput. The function of MIMO antenna is similar to that of diversity antenna, and they both • Copyright © Fibocom Wireless Inc.
Page 62: Gnss Antenna Design
2.928V, and the power supply needs to be started with the AT command. 6.11. Other Interfaces For the application of other interfaces, please refer to the recommended design. If the application scenario and the recommended design are not consistent, please contact FIBOCOM technicians for confirmation. Copyright © Fibocom Wireless Inc.
Page 63: Thermal Design
7. Thermal Design 7. Thermal Design FM101-CG module is designed to be workable on an extended temperature range, to make sure the module can work properly for a long time and achieve a better performance under extreme temperatures or extreme working conditions, such as high...
Page 64: Electrostatic Protection
8. Electrostatic Protection Although the ESD problem has been considered and ESD protection has been completed in the FM101-CG module design, the ESD problem may also occur in transportation and secondary development. Developers should consider ESD protection in the final product.
Page 65: Structural Specifications
The appearance of the FM101-CG module is shown in the following figure. Figure 32. Product appearance 9.2. Structural Dimensions The structural dimensions of the FM101-CG module is shown in the following figure. The unit is mm. Copyright © Fibocom Wireless Inc.
Page 66: Package
Tray Package The FM101-CG module uses tray package. 20 pcs are packed in one tray. 5 trays covering an empty tray on top are packed in one box. 5 boxes are packed in one case.
Page 67: Storage
9. Structural Specifications Figure 34. Tray package Tray Size The tray size of FM101-CG module is 330 mm × 175 mm × 6.5 mm, as shown in the following figure. Figure 35. Tray size (unit: mm) 9.4. Storage Storage conditions (recommended): The temperature is 23℃ ± 5℃, and the relative humidity is less than RH 60%.
Page 68 9. Structural Specifications Storage period: Under the recommended storage conditions, the storage life is 12 months. Copyright © Fibocom Wireless Inc.
Page 69 Downlink Carrier Aggregation Discontinuous Reception Imax Maximum Load Current Light Emitting Diode Long Term Evolution Mobile Equipment Mobile Station Mobile Terminated Printed Circuit Board Protocol Data Unit Radio Frequency Root Mean Square Real Time Clock Copyright © Fibocom Wireless Inc.
Page 70 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 VImin Absolute Minimum Input Voltage Value VOHmax Maximum Output High Level Voltage Value Copyright © Fibocom Wireless Inc.
Page 71 Appendix A: Acronyms and Abbreviations 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 Copyright © Fibocom Wireless Inc.
Page 72 Fibocom that they wish to change the antenna trace design. In this case, a Class II permissive change application is required to be filed by...
Page 73 Federal Communication Commission Interference Statement This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
Page 74 This device is intended only for OEM integrators under the following conditions: (For module device use) 1) The antenna must be installed such that 20 cm is maintained between the antenna and users, and 2) The transmitter module may not be co-located with any other transmitter or antenna. As long as 2 conditions above are met, further transmitter test will not be required.

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