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- Page 1 EG21-G Mini PCIe Hardware Design LTE Standard Module Series Rev. EG21-G_Mini_PCIe_Hardware_Design_V1.0 Date: 2019-11-21 Status: Released www.quectel.com...
- Page 2 QUECTEL OFFERS THE INFORMATION AS A SERVICE TO ITS CUSTOMERS. THE INFORMATION PROVIDED IS BASED UPON CUSTOMERS’ REQUIREMENTS. QUECTEL MAKES EVERY EFFORT TO ENSURE THE QUALITY OF THE INFORMATION IT MAKES AVAILABLE. QUECTEL DOES NOT MAKE ANY WARRANTY AS TO THE INFORMATION CONTAINED HEREIN, AND DOES NOT ACCEPT ANY LIABILITY FOR ANY INJURY, LOSS OR DAMAGE OF ANY KIND INCURRED BY USE OF OR RELIANCE UPON THE INFORMATION.
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Page 3: About The Document
LTE Standard Module Series EG21-G Mini PCIe Hardware Design About the Document History Revision Date Author Description Lorry XU/ 2019-11-21 Initial Ethan SHAN EG21-G_Mini_PCIe_Hardware_Design 2 / 54... -
Page 4: Table Of Contents
LTE Standard Module Series EG21-G Mini PCIe Hardware Design Contents About the Document ........................... 2 Contents ............................... 3 Table Index ..............................5 Figure Index ..............................6 Introduction ............................7 1.1. Safety Information........................8 Product Concept ..........................9 2.1. General Description ........................9 2.2. - Page 5 LTE Standard Module Series EG21-G Mini PCIe Hardware Design Electrical, Reliability and Radio Characteristics ................38 6.1. General Description ......................... 38 6.2. Power Supply Requirements ....................38 6.3. I/O Requirements ........................39 6.4. RF Characteristics ........................39 6.5. ESD Characteristics ........................ 41 6.6.
- Page 6 LTE Standard Module Series EG21-G Mini PCIe Hardware Design Table Index TABLE 1: DESCRIPTION OF EG21-G MINI PCIE....................9 TABLE 2: KEY FEATURES OF EG21-G MINI PCIE ..................10 TABLE 3: I/O PARAMETERS DEFINITION ....................... 15 TABLE 4: PIN DESCRIPTION ........................... 15 TABLE 5: OVERVIEW OF OPERATING MODES .....................
- Page 7 LTE Standard Module Series EG21-G Mini PCIe Hardware Design Figure Index FIGURE 1: FUNCTIONAL DIAGRAM ....................... 13 FIGURE 2: PIN ASSIGNMENT ......................... 14 FIGURE 3: REFERENCE CIRCUIT OF POWER SUPPLY ................20 FIGURE 4: REFERENCE CIRCUIT OF (U)SIM INTERFACE WITH AN 8-PIN (U)SIM CARD CONNECTOR 21 FIGURE 5: REFERENCE CIRCUIT OF (U)SIM INTERFACE WITH A 6-PIN (U)SIM CARD CONNECTOR ...
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Page 8: Introduction
LTE Standard Module Series EG21-G Mini PCIe Hardware Design Introduction This document defines EG21-G Mini PCIe module, and describes its air interfaces and hardware interfaces which are connected with customers’ applications. This document helps customers quickly understand module interface specifications, electrical characteristics, mechanical specifications and other related information of the module. -
Page 9: Safety Information
EG21-G Mini PCIe module. Manufacturers of the cellular terminal should send the following safety information to users and operating personnel, and incorporate these guidelines into all manuals supplied with the product. If not so, Quectel assumes no liability for customers’ failure to comply with these precautions. -
Page 10: Product Concept
LTE Standard Module Series EG21-G Mini PCIe Hardware Design Product Concept 2.1. General Description EG21-G Mini PCIe module provides data connectivity on LTE-FDD, LTE-TDD, DC-HSDPA, HSPA+, HSDPA, HSUPA, WCDMA, EDGE and GPRS networks with PCI Express Mini Card 1.2 standard interface. -
Page 11: Key Features
LTE Standard Module Series EG21-G Mini PCIe Hardware Design 850/900/1800/1900MHz GNSS (Optional) GPS, GLONASS, BeiDou (Compass), Galileo, QZSS Digital Audio (PCM) Supported 2.3. Key Features The following table describes the detailed features of EG21-G Mini PCIe module. Table 2: Key Features of EG21-G Mini PCIe... - Page 12 LTE Standard Module Series EG21-G Mini PCIe Hardware Design Max 107Kbps (DL), Max 85.6Kbps (UL) EDGE: Support EDGE multi-slot class 33 (33 by default) Support GMSK and 8-PSK for different MCS (Modulation and Coding Scheme) Downlink coding schemes: CS 1-4 and MCS 1-9 Uplink coding schemes: CS 1-4 and MCS 1-9 Max 296Kbps (DL), Max 236.8Kbps (UL)
- Page 13 LTE Standard Module Series EG21-G Mini PCIe Hardware Design Data update rate: 1Hz by default Compliant with 3GPP TS 27.007, 27.005 and Quectel enhanced AT AT Commands commands Size: (51.0± 0.15)mm × (30.0± 0.15)mm × (4.9± 0.2)mm Physical Characteristics Weight: approx. 9.8g Operation temperature range: -35°...
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Page 14: Functional Diagram
LTE Standard Module Series EG21-G Mini PCIe Hardware Design 2.4. Functional Diagram The following figure shows the block diagram of EG21-G Mini PCIe. VBAT Boost Circuit Main Main Antenna Antenna Connector PCM&I2C GNSS GNSS Antenna EG21-G Module Antenna UART Connector... -
Page 15: Application Interfaces
LTE Standard Module Series EG21-G Mini PCIe Hardware Design Application Interfaces The physical connections and signal levels of EG21-G Mini PCIe comply with PCI Express Mini Card Electromechanical Specification. This chapter mainly describes the definition and application of the following interfaces/pins of EG21-G Mini PCIe: ... -
Page 16: Pin Description
LTE Standard Module Series EG21-G Mini PCIe Hardware Design 3.2. Pin Description The following tables show the pin definition and description of the 52 pins on EG21-G Mini PCIe. Table 3: I/O Parameters Definition Type Description Digital Input Digital Output... - Page 17 LTE Standard Module Series EG21-G Mini PCIe Hardware Design (U)SIM card Mini card ground Data signal of (U)SIM UIM_DATA USIM_DATA card Connect to REFCLK- UART_RX UART receive data DTE’s TX. Clock signal of UIM_CLK USIM_CLK (U)SIM card Connect to REFCLK+...
- Page 18 LTE Standard Module Series EG21-G Mini PCIe Hardware Design Require SMB_CLK I2C_SCL I2C serial clock external pull-up to 1.8V. PETn0 Sleep mode control Require SMB_DATA I2C_SDA I2C serial data external pull-up to 1.8V. PETp0 RESERVED Reserved Mini card ground Mini card ground...
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Page 19: Operating Modes
LTE Standard Module Series EG21-G Mini PCIe Hardware Design Mini card ground PCM frame RESERVED PCM_SYNC synchronization 3.0V~3.6V, typically 3.3Vaux VCC_3V3 3.3V DC supply NOTE Keep all NC, reserved and unused pins unconnected. 3.1. Operating Modes The following table briefly outlines the operating modes to be mentioned in the following chapters. -
Page 20: Power Saving
LTE Standard Module Series EG21-G Mini PCIe Hardware Design 3.2. Power Saving 3.2.1. Sleep Mode EG21-G Mini PCIe is able to reduce its current consumption to a minimum value in sleep mode. There are three preconditions must be met to make the module enter sleep mode. -
Page 21: U)Sim Interface
LTE Standard Module Series EG21-G Mini PCIe Hardware Design MIC29302WU VCC_3V3 LDO_IN 82K 1% 470uF 100nF 100nF 33pF 10pF 470R 470uF 47K 1% 4.7K MCU_POWER _ON/OFF Figure 3: Reference Circuit of Power Supply 3.4. (U)SIM Interface The (U)SIM interface circuitry meets ETSI and IMT-2000 requirements. Both 1.8V and 3.0V (U)SIM cards are supported. - Page 22 LTE Standard Module Series EG21-G Mini PCIe Hardware Design USIM_VDD 100nF Module (U)SIM Card Connector USIM_VDD USIM_RST USIM_CLK USIM_PRESENCE USIM_DATA 33pF 33pF 33pF Figure 4: Reference Circuit of (U)SIM Interface with an 8-pin (U)SIM Card Connector If (U)SIM card detection function is not needed, please keep USIM_PRESENCE unconnected. A reference circuit for (U)SIM interface with a 6-pin (U)SIM card connector is illustrated in the following figure.
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Page 23: Usb Interface
LTE Standard Module Series EG21-G Mini PCIe Hardware Design Make sure the bypass capacitor between USIM_VDD and USIM_GND is less than 1uF, and be placed as close to (U)SIM card connector as possible. If the ground is complete on customers’ PCB, USIM_GND can be connected to PCB ground directly. -
Page 24: Uart Interface
LTE Standard Module Series EG21-G Mini PCIe Hardware Design A common mode choke L1 is recommended to be added in series between the module and customer’s MCU in order to suppress EMI spurious transmission. Meanwhile, the 0Ω resistors (R3 and R4) should be added in series between the module and the test points so as to facilitate debugging, and the resistors are not mounted by default. -
Page 25: Pcm And I2C Interfaces
LTE Standard Module Series EG21-G Mini PCIe Hardware Design Module MCU/ARM UART_TXD UART_RXD UART_RTS UART_CTS Voltage level: 3.3V Voltage level: 3.3V Figure 7: Reference Circuit of Power Supply NOTE AT+IPR can be used to set the baud rate of the main UART, and AT+IFC can be used to set the hardware flow control (hardware flow control is disabled by default). - Page 26 LTE Standard Module Series EG21-G Mini PCIe Hardware Design I2C serial data. I2C_SDA 1.8V Require external pull-up to 1.8V. EG21-G Mini PCIe provides one PCM digital interface, which supports 16-bit linear data format and the following modes: Primary mode (short frame synchronization, works as either master or slave) ...
- Page 27 LTE Standard Module Series EG21-G Mini PCIe Hardware Design 125us PCM_CLK PCM_SYNC PCM_DOUT PCM_DIN Figure 9: Timing in Auxiliary Mode Clock and mode can be configured by AT command, and the default configuration is master mode using short frame synchronization format with 2048kHz PCM_CLK and 8kHz PCM_SYNC. In addition, EG21-G Mini PCIe’s firmware has integrated the configuration on some PCM codec’s application with I2C interface.
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Page 28: Control And Indication Signals
LTE Standard Module Series EG21-G Mini PCIe Hardware Design 3.8. Control and Indication Signals The following table shows the pin definition of control and indication signals. Table 11: Pin Definition of Control and Indication Signals Pin Name Pin No. Power Domain Description 3.3V... -
Page 29: W_Disable# Signal
LTE Standard Module Series EG21-G Mini PCIe Hardware Design 3.8.3. W_DISABLE# Signal EG21-G Mini PCIe provides a W_DISABLE# signal to disable or enable the RF function (excluding GNSS). The W_DISABLE# pin is pulled up by default. Its control function for airplane mode is disabled by default, and AT+QCFG=“airplanecontrol”,1 can be used to enable the function. -
Page 30: Led_Wwan# Signal
LTE Standard Module Series EG21-G Mini PCIe Hardware Design VCC_3V3 ≤460ms ≥150ms ≥2.3V PERST# ≤0.5V Module Running Resetting Restart Status Figure 12: Timing of Resetting Module 3.8.5. LED_WWAN# Signal The LED_WWAN# signal of EG21-G Mini PCIe is used to indicate the network status of the module, and can absorb the current up to 40mA. -
Page 31: Wake# Signal
LTE Standard Module Series EG21-G Mini PCIe Hardware Design Table 14: Indications of Network Status (AT+QCFG="ledmode",0, Default Setting) Pin Status Description Flicker slowly (200ms Low/1800ms High) Network searching Flicker slowly (1800ms Low/200ms High) Idle Flicker quickly (125ms Low/125ms High) Data transfer is ongoing... -
Page 32: Gnss Receiver
LTE Standard Module Series EG21-G Mini PCIe Hardware Design GNSS Receiver 4.1. General Description EG21-G Mini PCIe includes a fully integrated global navigation satellite system solution that supports Gen8C-Lite of Qualcomm (GPS, GLONASS, BeiDou/Compass, Galileo and QZSS). Additionally, it supports standard NMEA-0183 protocol, and outputs NMEA sentences at 1Hz data update rate via USB interface by default. -
Page 33: Gnss Frequency
LTE Standard Module Series EG21-G Mini PCIe Hardware Design Accuracy Autonomous CEP-50 <2.5 (GNSS) @open sky NOTES Tracking sensitivity: the minimum GNSS signal power at which the module can maintain lock (keep positioning for at least 3 minutes continuously). Reacquisition sensitivity: the minimum GNSS signal power required for the module to maintain lock within 3 minutes after loss of lock. -
Page 34: Antenna Connection
LTE Standard Module Series EG21-G Mini PCIe Hardware Design Antenna Connection 5.1. Antenna Connectors EG21-G Mini PCIe is mounted with three antenna connectors for external antenna connection: a main antenna connector, an Rx-diversity antenna connector, and a GNSS antenna connector. And Rx-diversity function is enabled by default. - Page 35 LTE Standard Module Series EG21-G Mini PCIe Hardware Design LTE-FDD B1 1920~1980 2110~2170 LTE-FDD B2 1850~1910 1930~1990 LTE-FDD B3 1710~1785 1805~1880 LTE-FDD B4 1710~1755 2110~2155 LTE-FDD B5 824~849 869~894 LTE-FDD B7 2500~2570 2620~2690 LTE-FDD B8 880~915 925~960 LTE-FDD B12 699~716...
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Page 36: Antenna Requirements
LTE Standard Module Series EG21-G Mini PCIe Hardware Design 5.2. Antenna Requirements The following table shows the requirements on main antenna, Rx-diversity antenna and GNSS antenna. Table 18: Antenna Requirements Type Requirements Frequency range: 1559MHz~1609MHz Polarization: RHCP or linear VSWR: < 2 (Typ.) GNSS Passive antenna gain: >... -
Page 37: Recommended Mating Plugs For Antenna Connection
LTE Standard Module Series EG21-G Mini PCIe Hardware Design 5.3. Recommended Mating Plugs for Antenna Connection EG21-G Mini PCIe is mounted with RF connectors (receptacles) for convenient antenna connection. The dimensions of the antenna connectors are shown as below. Figure 15: Dimensions of the Receptacle RF Connectors (Unit: mm) U.FL-LP mating plugs listed in the following figure can be used to match the receptacles. - Page 38 LTE Standard Module Series EG21-G Mini PCIe Hardware Design The following figure describes the space factor of mating plugs. Figure 17: Space Factor of Mating Plugs (Unit: mm) For more details of the recommended mating plugs, please visit http://www.hirose.com. EG21-G_Mini_PCIe_Hardware_Design...
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Page 39: Electrical, Reliability And Radio Characteristics
LTE Standard Module Series EG21-G Mini PCIe Hardware Design Electrical, Reliability and Radio Characteristics 6.1. General Description This chapter mainly describes the following electrical and radio characteristics of EG21-G Mini PCIe: Power supply requirements I/O requirements RF characteristics ... -
Page 40: I/O Requirements
LTE Standard Module Series EG21-G Mini PCIe Hardware Design 6.3. I/O Requirements The following table shows the I/O requirements of EG21-G Mini PCIe. Table 20: I/O Requirements Parameter Description Min. Max. Unit Input High Voltage 0.7 × VCC_3V3 VCC_3V3 + 0.3 Input Low Voltage -0.3... - Page 41 LTE Standard Module Series EG21-G Mini PCIe Hardware Design LTE-FDD B13/B18/B19/B20/B25/B26/B28 23dBm± 2dB < -39dBm LTE-TDD B38/B39/B40/B41 23dBm± 2dB < -39dBm NOTES In GPRS 4 slots TX mode, the maximum output power is reduced by 3.0dB. The design conforms to the GSM specification as described in Chapter 13.16 of 3GPP TS 51.010-1.
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Page 42: Esd Characteristics
LTE Standard Module Series EG21-G Mini PCIe Hardware Design LTE-TDD B5 (10MHz) -98dBm -98.5dBm -99.9dBm -94.3dBm LTE-TDD B7 (10MHz) -97.3dBm -97.3dBm -99.1dBm -94.3dBm LTE-TDD B8 (10MHz) -98dBm -98.1dBm -99.8dBm -93.3dBm LTE-TDD B12 (10MHz) -98dBm -98.1dBm -99.9dBm -93.3dBm LTE-TDD B13 (10MHz) -98dBm -98.1dBm... -
Page 43: Current Consumption
LTE Standard Module Series EG21-G Mini PCIe Hardware Design Antenna Interfaces +/-4 +/-8 USB Interface +/-4 +/-8 (U)SIM Interface +/-4 +/-8 Others +/-0.5 +/-1 6.6. Current Consumption Table 24: Current Consumption of EG21-G Mini PCIe Parameter Description Conditions Typ. Unit... - Page 44 LTE Standard Module Series EG21-G Mini PCIe Hardware Design LTE-FDD @PF=128 (USB disconnected) LTE-FDD @PF=256 (USB disconnected) LTE-TDD @PF=32 (USB disconnected) LTE-TDD @PF=64 (USB disconnected) LTE-TDD @PF=64 (USB suspend) LTE-TDD @PF=128 (USB disconnected) LTE-TDD @PF=256 (USB disconnected) EGSM DRX=5 (USB disconnected)
- Page 45 LTE Standard Module Series EG21-G Mini PCIe Hardware Design DCS1800 3UL/2DL @26.38dBm DCS1800 4UL/1DL @25.50dBm PCS1900 1UL/4DL @29.49dBm PCS1900 2UL/3DL @28.05dBm PCS1900 3UL/2DL @26.25dBm PCS1900 4UL/1DL @25.28dBm GSM850 1UL/4DL @26.11dBm GSM850 2UL/3DL @24.86dBm GSM850 3UL/2DL @23.32dBm GSM850 4UL/1DL @22.30dBm EGSM900 1UL/4DL @25.95dBm EGSM900 2UL/3DL @24.99dBm...
- Page 46 LTE Standard Module Series EG21-G Mini PCIe Hardware Design WCDMA B5 HSDPA @22.44dBm WCDMA B6 HSUPA @22.39dBm WCDMA B8 HSUPA @21.76dBm WCDMA B19 HSUPA @22.01dBm LTE-FDD B1 @22.99dBm LTE-FDD B2 @22.77dBm LTE-FDD B3 @23.04dBm LTE-FDD B4 @23.41dBm LTE-FDD B5 @23.25dBm LTE-FDD B7 @23.42dBm...
- Page 47 LTE Standard Module Series EG21-G Mini PCIe Hardware Design DCS1800 PCL=0 @29.08dBm PCS1900 PCL=0 @29.42dBm WCDMA B1 @23.72dBm WCDMA B2 @23.64dBm WCDMA B4 @23.82dBm WCDMA WCDMA B5 @23.50dBm voice call WCDMA B6 @23.54dBm WCDMA B8 @23.58dBm WCDMA B19 @23.40dBm Table 25: GNSS Current Consumption of EG21-G Mini PCIe...
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Page 48: Thermal Consideration
LTE Standard Module Series EG21-G Mini PCIe Hardware Design 6.7. Thermal Consideration In order to achieve better performance of the module, it is recommended to comply with the following principles for thermal consideration: On customers’ PCB design, please keep placement of the PCI Express Mini Card away from heating sources. - Page 49 LTE Standard Module Series EG21-G Mini PCIe Hardware Design NOTES The module offers the best performance when the internal BB chip stays below 105° C. When the maximum temperature of the BB chip reaches or exceeds 105° C, the module works normal but provides reduced performance (such as RF output power, data rate, etc.).
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Page 50: Dimensions And Packaging
LTE Standard Module Series EG21-G Mini PCIe Hardware Design Dimensions and Packaging 7.1. General Description This chapter mainly describes mechanical dimensions as well as packaging specification of EG21-G Mini PCIe module. All dimensions are measured in millimeter (mm), and the dimensional tolerances are ±... -
Page 51: Standard Dimensions Of Mini Pci Express
LTE Standard Module Series EG21-G Mini PCIe Hardware Design 7.3. Standard Dimensions of Mini PCI Express The following figure shows the standard dimensions of Mini PCI Express. Please refer to document [1] for Detail A and Detail B. Figure 20: Standard Dimensions of Mini PCI Express... -
Page 52: Packaging Specifications
LTE Standard Module Series EG21-G Mini PCIe Hardware Design EG21-G Mini PCIe adopts a standard Mini PCI Express connector which compiles with the directives and standards listed in the document [1]. The following figure takes the Molex 679105700 as an example. -
Page 53: Appendix A References
LTE Standard Module Series EG21-G Mini PCIe Hardware Design Appendix A References Table 26: Related Documents Document Name Remark PCI Express Mini Card Electromechanical PCI Express Mini Card Specification Revision 1.2 Electromechanical Specification Quectel_LTE_Standard_AT_Commands_ AT commands manual for LTE Standard... - Page 54 LTE Standard Module Series EG21-G Mini PCIe Hardware Design Electrostatic Discharge Equivalent Series Resistance Frequency Division Duplexing Full Rate GLObalnaya Navigatsionnaya Sputnikovaya Sistema, the Russian Global GLONASS Navigation Satellite System GMSK Gaussian Minimum Shift Keying GNSS Global Navigation Satellite System...
- Page 55 LTE Standard Module Series EG21-G Mini PCIe Hardware Design Protocol Data Unit Point of Sale Point-to-Point Protocol Radio Frequency Ready To Send Receive SIMO Single Input Multiple Output Short Message Service Transmitting Direction Transient Voltage Suppressor UART Universal Asynchronous Receiver & Transmitter...
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