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- Page 1 EC20 R2.1 Mini PCIe Hardware Design LTE Standard Module Series Rev. EC20_R2.1_Mini_PCIe_Hardware_Design_V1.1 Date: 2019-09-10 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
2017-12-22 Initial Niko WU Added LTE-TDD band B34 (Table 1, 19, 20, 23, 24 and 26). Updated key features of EC20 R2.1 Mini PCIe module (Table 2). Updated names of pin 3 and 5 from RESERVED to COEX_UART_RX COEX_UART_TX respectively (Figure 2). -
Page 4: Table Of Contents
LTE Standard Module Series EC20 R2.1 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 Current Consumption ......................42 Dimensions and Packaging ......................46 7.1. General Description ......................... 46 7.2. Mechanical Dimensions of EC20 R2.1 Mini PCIe ..............46 7.3. Standard Dimensions of Mini PCI Express ................47 7.4. Packaging Specifications ......................48 Appendix A References ........................49 EC20_R2.1_Mini_PCIe_Hardware_Design...
- Page 6 TABLE 21: POWER SUPPLY REQUIREMENTS ....................37 TABLE 22: I/O REQUIREMENTS ........................38 TABLE 23: EC20 R2.1 MINI PCIE CONDUCTED RF OUTPUT POWER ............38 TABLE 24: EC20 R2.1 MINI PCIE CONDUCTED RF RECEIVING SENSITIVITY ........... 39 TABLE 25: ESD CHARACTERISTICS OF EC20 R2.1 MINI PCIE ..............40 TABLE 26: CURRENT CONSUMPTION OF EC20 R2.1 MINI PCIE ..............
- Page 7 FIGURE 17: SPACE FACTOR OF MATING PLUGS (UNIT: MM) ..............36 FIGURE 18: REFERENCED HEATSINK DESIGN ................... 41 FIGURE 19: MECHANICAL DIMENSIONS OF EC20 R2.1 MINI PCIE ............46 FIGURE 20: STANDARD DIMENSIONS OF MINI PCI EXPRESS ..............47 FIGURE 21: DIMENSIONS OF THE MINI PCI EXPRESS CONNECTOR (MOLEX 679100002) ....48 EC20_R2.1_Mini_PCIe_Hardware_Design...
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Page 8: Introduction
LTE Standard Module Series EC20 R2.1 Mini PCIe Hardware Design Introduction This document defines EC20 R2.1 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
The following safety precautions must be observed during all phases of operation, such as usage, service or repair of any cellular terminal or mobile incorporating EC20 R2.1 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. -
Page 10: Product Concept
Product Concept 2.1. General Description EC20 R2.1 Mini PCIe module provides data connectivity on LTE-FDD, LTE-TDD, DC-HSDPA, HSPA+, HSDPA, HSUPA, WCDMA, TD-SCDMA, EVDO, CDMA, EDGE and GPRS networks with PCI Express Mini Card 1.2 standard interface. It supports embedded operating systems such as Linux, Android, etc., and also provides audio, high-speed data transmission and GNSS functionalities for customers’... -
Page 11: Key Features
GNSS function is optional. Digital audio (PCM) function is only supported on Telematics version. 2.2. Key Features The following table describes the detailed features of EC20 R2.1 Mini PCIe module. Table 2: Key Features of EC20 R2.1 Mini PCIe Features... - Page 12 LTE Standard Module Series EC20 R2.1 Mini PCIe Hardware Design Coding scheme: CS-1, CS-2, CS-3 and CS-4 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...
- Page 13 Support LTE/WCDMA Rx-diversity (Optional) Gen8C Lite of Qualcomm GNSS Features Protocol: NMEA 0183 Data update rate: 10Hz 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.
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Page 14: Functional Diagram
LTE Standard Module Series EC20 R2.1 Mini PCIe Hardware Design 2.3. Functional Diagram The following figure shows the block diagram of EC20 R2.1 Mini PCIe. VBAT Boost Circuit Main Main Antenna Antenna Connector PCM&I2C GNSS GNSS EC20 R2.1 Antenna UART... -
Page 15: Application Interfaces
EC20 R2.1 Mini PCIe Hardware Design Application Interfaces The physical connections and signal levels of EC20 R2.1 Mini PCIe comply with PCI Express Mini Card Electromechanical Specification. This chapter mainly describes the definition and application of the following interfaces for EC20 R2.1 Mini PCIe: ... -
Page 16: Pin Description
LTE Standard Module Series EC20 R2.1 Mini PCIe Hardware Design 3.2. Pin Description The following tables show the pin definition and description of the 52 pins on EC20 R2.1 Mini PCIe. Table 3: I/O Parameters Definition Type Description Digital Input... - Page 17 LTE Standard Module Series EC20 R2.1 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 (U)SIM UIM_CLK USIM_CLK card Connect to...
- Page 18 LTE Standard Module Series EC20 R2.1 Mini PCIe Hardware Design 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 Require differential USB_D- USB_DM USB differential data (-) impedance of 90Ω.
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Page 19: Operating Modes
TCP/UDP data from the network normally. 3.4. Power Saving 3.4.1. Sleep Mode EC20 R2.1 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 20: Airplane Mode
35, 37, 40, 43, 50 The typical supply voltage of EC20 R2.1 Mini PCIe is 3.3V. In the 2G network, the input peak current may reach 2.7A during the transmitting time. Therefore, the power supply must be able to provide a rated output current of 2.7A at least, and a bypass capacitor of no less than 470µF with low-ESR should be... -
Page 21: Uart Interfaces
LTE Standard Module Series EC20 R2.1 Mini PCIe Hardware Design 3.6. UART Interfaces EC20 R2.1 Mini PCIe provides one main UART interface and one COEX UART interface. 3.6.1. Main UART Interface The main UART interface supports 9600bps, 19200bps, 38400bps, 57600bps, 115200bps and 230400bps baud rates, and the default is 115200bps. -
Page 22: Coex Uart Interface
“*” means under development. 3.7. USB Interface EC20 R2.1 Mini PCIe provides one integrated Universal Serial Bus (USB) interface which complies with USB 2.0 specification. It can only be used as a slave device. Meanwhile, it supports high speed (480Mbps) mode and full speed (12Mbps) mode. -
Page 23: U)Sim Interface
2pF and should be placed as close as possible to the USB interface. 3.8. (U)SIM Interface EC20 R2.1 Mini PCIe’s (U)SIM interface circuitry meets ETSI and IMT-2000 requirements. Both 1.8V and 3.0V (U)SIM cards are supported. The following table shows the pin definition of the (U)SIM interface. - Page 24 1.8V (U)SIM card insertion detection EC20 R2.1 Mini PCIe supports (U)SIM card hot-plug via the USIM_PRESENCE pin. The function supports low level and high level detections. By default, It is disabled, and can be configured via AT+QSIMDET command. Please refer to document [2] for details about the command.
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Page 25: Pcm And I2C Interfaces
3.9. PCM and I2C Interfaces EC20 R2.1 Mini PCIe provides one Pulse Code Modulation (PCM) digital interface and one I2C interface. The following table shows the pin definition of PCM and I2C interfaces that can be applied in audio codec design. - Page 26 I2C serial data. I2C_SDA 1.8V Require external pull-up to 1.8V. EC20 R2.1 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 EC20 R2.1 Mini PCIe Hardware Design In auxiliary mode, the data is sampled on the falling edge of the PCM_CLK and transmitted on the rising edge. The PCM_SYNC rising edge represents the MSB. In this mode, the PCM interface operates with a 256kHz, 512kHz, 1024kHz or 2048kHz PCM_CLK and an 8kHz, 50% duty cycle PCM_SYNC.
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Page 28: Control And Indication Signals
LTE Standard Module Series EC20 R2.1 Mini PCIe Hardware Design NOTE Digital audio (PCM) function is only supported on Telematics version. 3.10. Control and Indication Signals The following table shows the pin definition of control and indication signals. Table 12: Pin Definition of Control and Indication Signals Pin Name Pin No. -
Page 29: Dtr Signal
Chapter 3.4.1. 3.10.3. W_DISABLE# Signal EC20 R2.1 Mini PCIe provides a W_DISABLE# signal to disable or enable the RF function (GNSS not included). 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
3.10.5. LED_WWAN# Signal The LED_WWAN# signal of EC20 R2.1 Mini PCIe is used to indicate the network status of the module, and can absorb a current up to 40mA. According to the following circuit, in order to reduce the current of the LED, a resistor must be placed in series with the LED. -
Page 31: Wake# Signal
LTE Standard Module Series EC20 R2.1 Mini PCIe Hardware Design Flicker slowly (1800ms Low/200ms High) Idle Flicker quickly (125ms Low/125ms High) Data transfer is ongoing Always Low Voice calling Table 16: Indications of Network Status (AT+QCFG="ledmode",2) Pin Status Description Low Level (Light ON) Registered on network successfully ... -
Page 32: Gnss Receiver
NMEA-0183 protocol, and outputs NMEA sentences at 1Hz data update rate via USB interface by default. By default, EC20 R2.1 Mini PCIe GNSS engine is switched off. It has to be switched on via AT command. For more details about GNSS engine technology and configurations, please refer to document [3]. -
Page 33: Gnss Frequency
LTE Standard Module Series EC20 R2.1 Mini PCIe Hardware Design 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
Antenna Connection 5.1. Antenna Connectors EC20 R2.1 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. The impedance of the antenna connectors is 50Ω. -
Page 35: Antenna Requirements
LTE Standard Module Series EC20 R2.1 Mini PCIe Hardware Design LTE-TDD B39 1880~1920 1880~1920 LTE-TDD B40 2300~2400 2300~2400 LTE-TDD B41 2555~2655 2555~2655 5.2. Antenna Requirements The following table shows the requirements on main antenna, Rx-diversity antenna and GNSS antenna. Table 20: Antenna Requirements... -
Page 36: Recommended Mating Plugs For Antenna Connection
EC20 R2.1 Mini PCIe Hardware Design 5.3. Recommended Mating Plugs for Antenna Connection EC20 R2.1 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 37 LTE Standard Module Series EC20 R2.1 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.
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Page 38: Electrical, Reliability And Radio Characteristics
Thermal consideration Current consumption 6.2. Power Supply Requirements The input voltage of EC20 R2.1 Mini PCIe is 3.0V~3.6V. The following table shows the power supply requirements of EC20 R2.1 Mini PCIe. Table 21: Power Supply Requirements Parameter Description Min. -
Page 39: I/O Requirements
The maximum voltage value of V for PERST# signal and W_DISABLE# signal is 0.5V. 6.4. RF Characteristics The following tables show the conducted RF output power and receiving sensitivity of EC20 R2.1 Mini PCIe module. Table 23: EC20 R2.1 Mini PCIe Conducted RF Output Power Frequency Max. - Page 40 EC20 R2.1 Mini PCIe Hardware Design CDMA BC0 24dBm+2/-1dB < -49dBm LTE-FDD B1/B3/B5/B8 23dBm± 2dB < -39dBm LTE-TDD B38/B39/B40/B41 23dBm± 2dB < -39dBm Table 24: EC20 R2.1 Mini PCIe Conducted RF Receiving Sensitivity Frequency Primary Diversity SIMO 3GPP (SIMO) EGSM900 -109dBm -102dBm DCS1800...
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Page 41: Esd Characteristics
LTE Standard Module Series EC20 R2.1 Mini PCIe Hardware Design 6.5. ESD Characteristics The following table shows the ESD characteristics of EC20 R2.1 Mini PCIe. Table 25: ESD Characteristics of EC20 R2.1 Mini PCIe Tested Interfaces Contact Discharge Air Discharge... - Page 42 LTE Standard Module Series EC20 R2.1 Mini PCIe Hardware Design Thermal Pad Thermal Pad EC20 R2.1 Mini PCIe Heatsink Heatsink EC20 R2.1 Module Shielding Cover Thermal Pad PCI Express Mini Card Connector Application Board Application Board Figure 18: Referenced Heatsink Design NOTES The module offers the best performance when the internal BB chip stays below 105°...
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Page 43: Current Consumption
LTE Standard Module Series EC20 R2.1 Mini PCIe Hardware Design 6.7. Current Consumption Table 26: Current Consumption of EC20 R2.1 Mini PCIe Parameter Description Conditions Typ. Unit AT+CFUN=0 (USB disconnected) 3.38 EGSM @DRX=2 (USB disconnected) 4.84 EGSM @DRX=5 (USB disconnected) 4.18... - Page 44 LTE Standard Module Series EC20 R2.1 Mini PCIe Hardware Design LTE-FDD @PF=64 (USB disconnected) 4.66 LTE-FDD @PF=64 (USB suspend) 4.58 LTE-FDD @PF=128 (USB disconnected) 4.02 LTE-FDD @PF=256 (USB disconnected) 3.65 LTE-TDD @PF=32 (USB disconnected) 6.36 LTE-TDD @PF=64 (USB disconnected) 5.12 LTE-TDD @PF=64 (USB suspend) 4.73...
- Page 45 LTE Standard Module Series EC20 R2.1 Mini PCIe Hardware Design DCS1800 4DL/1UL @29.60dBm 223.4 DCS1800 3DL/2UL @29.48dBm 355.1 DCS1800 2DL/3UL @29.81dBm 489.8 DCS1800 1DL/4UL @29.73dBm 649.5 EGSM900 4DL/1UL @27.50dBm 212.5 EGSM900 3DL/2UL @27.50dBm 356.8 EGSM900 2DL/3UL @27.60dBm 490.9 EGSM900 1DL/4UL @27.42dBm 622.7...
- Page 46 BC0 @-60.67dBm 146.1 WCDMA B1 @23.05dBm 865.8 WCDMA voice call WCDMA B8 @23.1dBm 718.5 Table 27: GNSS Current Consumption of EC20 R2.1 Mini PCIe Parameter Description Conditions Typ. Unit Cold start @Passive Antenna 63.3 Searching (AT+CFUN=0) Lost state @Passive Antenna 64.1...
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Page 47: Dimensions And Packaging
Dimensions and Packaging 7.1. General Description This chapter mainly describes mechanical dimensions as well as packaging specification of EC20 R2.1 Mini PCIe module. All dimensions are measured in millimeter (mm), and the dimensional tolerances are ± 0.05mm unless otherwise specified. -
Page 48: Standard Dimensions Of Mini Pci Express
Figure 20: Standard Dimensions of Mini PCI Express EC20 R2.1 Mini PCIe adopts a standard Mini PCI Express connector which compiles with the directives and standards listed in document [1]. The following figure takes the Molex 679100002 as an example. -
Page 49: Packaging Specifications
Figure 21: Dimensions of the Mini PCI Express Connector (Molex 679100002) 7.4. Packaging Specifications EC20 R2.1 Mini PCIe modules are packaged in a tray. Each tray contains 10 modules. The smallest package of EC20 R2.1 Mini PCIe contains 100 modules. -
Page 50: Appendix A References
LTE Standard Module Series EC20 R2.1 Mini PCIe Hardware Design Appendix A References Table 28: Related Documents Document Name Remark PCI Express Mini Card Electromechanical PCI Express Mini Card Electromechanical Specification Revision 1.2 Specification Quectel_EC20_R2.1_AT_Commands_Manual EC20 R2.1 AT commands manual... - Page 51 LTE Standard Module Series EC20 R2.1 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 52 LTE Standard Module Series EC20 R2.1 Mini PCIe Hardware Design Point-to-Point Protocol Radio Frequency Ready To Send Receive Direction SIMO Single Input Multiple Output Short Message Service Transmitting Direction Transient Voltage Suppressor UART Universal Asynchronous Receiver & Transmitter Up Link...