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- Page 1 EC20 Mini PCIe Hardware Design LTE Module Series Rev. EC20_Mini_PCIe_Hardware_Design_V1.0 Date: 2015-02-28 www.quectel.com...
- Page 2 QUECTEL OFFERS THIS 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 Module Series EC20 Mini PCIe Hardware Design About the Document History Revision Date Author Description Radom XIANG/ 2015-02-28 Initial Mike ZHANG EC20_Mini_PCIe_Hardware_Design Confidential / Released 2 / 36... -
Page 4: Table Of Contents
GNSS Receiver ........................30 4.6. ESD Characteristics ........................ 31 Mechanical Dimensions ........................32 5.1. General Description ......................... 32 5.2. Mechanical Dimensions of EC20 Mini PCIe ................32 5.3. Standard Dimensions of Mini PCI Express ................33 EC20_Mini_PCIe_Hardware_Design Confidential / Released 3 / 36... - Page 5 LTE Module Series EC20 Mini PCIe Hardware Design 5.4. Packaging ..........................34 Appendix Reference .......................... 35 EC20_Mini_PCIe_Hardware_Design Confidential / Released 4 / 36...
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Page 6: Table Index
EC20 Mini PCIe Hardware Design Table Index TABLE 1: DESCRIPTION OF EC20 MINI PCIE ....................10 TABLE 2: KEY FEATURES OF EC20 MINI PCIE ..................... 10 TABLE 3: DEFINITION OF IO PARAMETERS ....................13 TABLE 4: DESCRIPTION OF PIN ........................14 TABLE 5: VCC_3V3 AND GND PIN DEFINITION .................... -
Page 7: Figure Index
FIGURE 14: DIMENSIONS OF THE RF CONNECTOR (UNIT: MM) ............... 27 FIGURE 15: MECHANICALS OF UF.L-LP CONNECTORS ................27 FIGURE 16: MECHANICAL DIMENSIONS OF EC20 MINI PCIE (UNIT: MM) ..........32 FIGURE 17: STANDARD DIMENSIONS OF MINI PCI EXPRESS (UNIT: MM) ..........33 FIGURE 18: DIMENSIONS OF THE MINI PCI EXPRESS CONNECTOR (UNIT: MM) ........ -
Page 8: Introduction
EC20 Mini PCIe module. To facilitate its application in different fields, relevant reference design documents are also provided. Associated with application notes and user guide of EC20 Mini PCIe module, you can use the module to design and set up mobile applications easily. -
Page 9: Safety Information
If not so, Quectel does not take on any liability for customer failure to comply with these precautions. -
Page 10: Product Concept
Product Concept 2.1. General Description EC20 Mini PCIe module provides data connectivity on FDD-LTE, WCDMA and GSM networks with PCI Express Mini Card 1.2 standard interface. It supports embedded operating system such as WinCE, Linux and Android etc., and also provides audio, high-speed data transmission and GPS/GLONASS functionality for your applications. -
Page 11: Key Features
NOTES GPS/GLONASS function is optional. Digital audio (PCM) function is only supported in Telematics version. 2.3. Key Features The following table describes the detailed features of EC20 Mini PCIe module. Table 2: Key Features of EC20 Mini PCIe Feature Details Function Interface PCI Express Mini Card 1.2 Standard Interface... - Page 12 LTE Module Series EC20 Mini PCIe Hardware Design Support 2 × 2 MIMO in DL direction Max 100Mbps (DL), Max 50Mbps (UL) R99 CS data: Max 64kbps (DL), Max 64kbps (UL) R99 PS data: Max 384kbps (DL), Max 384kbps (UL) R5 HSDPA: Max 7.2Mbps (DL)
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Page 13: Functional Diagram
” means when the module works within this temperature range, RF performance might degrade. For example, the frequency error or the phase error may increase. 2.4. Functional Diagram The following figure shows a block diagram of EC20 Mini PCIe. VBAT Boost... -
Page 14: Application Interface
EC20 Mini PCIe Hardware Design Application Interface 3.1. General Description The physical connections and signal levels of EC20 Mini PCIe comply with PCI Express Mini CEM specifications. This chapter mainly describes the following interface definition and application of EC20 Mini PCIe: ... - Page 15 LTE Module Series EC20 Mini PCIe Hardware Design Power output Table 4: Description of Pin Mini PCI Express EC20 Mini PCIe Pin No. Description Comment Standard Name Pin Name — WAKE# RESERVED Reserved 3.3Vaux VCC_3V3 3.3V DC supply — COEX1...
- Page 16 LTE Module Series EC20 Mini PCIe Hardware Design — PERn0 RESERVED Reserved — 3.3Vaux RESERVED Reserved — PERp0 RESERVED Reserved Mini Card ground Mini Card ground — — 1.5V Mini Card ground SMB_CLK I2C_SCL I2C serial clock PETn0 Sleep mode control...
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Page 17: Pin Assignment
14 cannot be used at the same time when using the optional USIM holder. 4. “*” means digital audio (PCM) function is only supported on Telematics version. 3.2.2. Pin Assignment The following figure shows the pin assignment of EC20 Mini PCIe module. The top side contains EC20 module and antenna connectors. PIN1... -
Page 18: Power Supply
37, 40, 43, 50 The typical supply voltage of EC20 Mini PCIe is 3.3V. In the 2G networks, the input peak current may reach to 2.7A during the transmitting time, therefore the power supply must be able to provide enough current, and a bypass capacitor of no less than 470µF with low ESR should be used to prevent the... -
Page 19: Usim Card Interface
USIM/SIM data signal USIM_CLK 1.8V/3.0V USIM/SIM clock signal USIM_RST 1.8V/3.0V USIM/SIM reset signal EC20 Mini PCIe supports 1.8V and 3.0V USIM cards. The following figure shows the reference design of the 6-pin USIM card. USIM_VDD 100nF Module USIM Holder USIM_VDD... -
Page 20: Usb Interface
USB differential data (+) EC20 Mini PCIe is compliant with USB 2.0 specification. It can only be used as a slave device. Meanwhile, it supports high speed (480Mbps) and full speed (12Mbps) mode. The USB interface is used for AT command, data transmission, GNSS NMEA output, software debug and firmware upgrade. -
Page 21: Uart Interface
The UART interface supports 9600, 19200, 38400, 57600, 115200 and 230400bps baud rate. The default is 115200bps. This interface can be used for AT communication. EC20 Mini PCIe is designed as the DCE, and the DCE-DTE connection of UART interface is shown as below. - Page 22 Figure 6: The DCE-DTE Connection of UART Interface The following figure is an example of connection between EC20 Mini PCIe and PC. Since the UART interface does not support the RS-232 level, A RS-232 level translator IC must be inserted between module and PC.
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Page 23: Pcm And I2C Interface
I2C serial data, require external I2C_SDA 1.8V pull-up to 1.8V EC20 Mini PCIe provides one PCM digital interface, which supports 8-bit A-law and μ-law, 16-bit linear data formats and the following modes: Primary mode (short sync, works as either master or slave) ... - Page 24 LTE Module Series EC20 Mini PCIe Hardware Design 125us PCM_CLK PCM_SYNC PCM_DOUT PCM_DIN Figure 8: Timing of Primary Mode In auxiliary mode, the data is sampled on the falling edge of the PCM_CLK and transmitted on the rising edge; while the PCM_SYNC rising edge represents the MSB. In this mode, PCM interface operates with a 128kHz PCM_CLK and an 8kHz, 50% duty cycle PCM_SYNC only.
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Page 25: Control Signals
LTE Module Series EC20 Mini PCIe Hardware Design The following figure shows the reference design of PCM interface with external codec IC (such as ALC5616). MIC_BIAS PCM_CLK BCLK PCM_SYNC MIC+ PCM_DOUT MIC- DACIN PCM_DIN ADCOUT SPKOUT+ SCLK I2C_SCL I2C_SDA SDIN... -
Page 26: Ri Signal
AT+QCFG="pwrsavedtr" is used to disable the sleep control function. 3.8.3. W_DISABLE# Signal EC20 Mini PCIe provides W_DISABLE# signal to disable wireless communications through hardware operation. The following table shows the radio operational states of module. Please refer to document [2] for related AT commands. -
Page 27: Perst# Signal
3.8.5. LED_WWAN# Signal The LED_WWAN# signal of EC20 Mini PCIe is used to indicate the network status of the module, which can absorb the 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 28: Antenna Interface
EC20 Mini PCIe Hardware Design 3.9. Antenna Interface EC20 Mini PCIe antenna interfaces include a main LTE/UMTS/GSM antenna interface, a LTE/UMTS Rx-diversity antenna interface and a GNSS antenna interface. All of these connectors are ECT818000117. The following figure shows the overall sizes of RF connector. -
Page 29: Electrical And Radio Characteristics
ESD characteristics 4.2. Power Supply Requirements The input voltage of EC20 Mini PCIe is 3.3V± 9%, as specified by PCI Express Mini CEM Specifications 1.2. The following table shows the power supply requirements of EC20 Mini PCIe. Table 13: Power Supply Requirements... -
Page 30: Io Requirements
2. The maximum value of V for PERST# signal and W_DISABLE# signal is 0.5V. 4.4. RF Characteristics The following tables show output power and receiving sensitivity of conducted RF of EC20 Mini PCIe module. Table 15: Output Power of Conducted RF Frequency Max. -
Page 31: Gnss Receiver
NMEA-0183 protocol and output NMEA messages with 1Hz via USB NMEA interface. EC20 Mini PCIe GNSS engine is switched off by default. You must switch on it by AT command. Please refer to document [3] for more details about GNSS engine technology and configurations. In addition, it should use passive antenna. -
Page 32: Esd Characteristics
LTE Module Series EC20 Mini PCIe Hardware Design 4.6. ESD Characteristics The following table shows characteristics of EC20 Mini PCIe ESD. Table 17: ESD Characteristics Part Contact Discharge Air Discharge Unit Power Supply and GND +/-5 +/-10 Antenna Interface +/-4... -
Page 33: Mechanical Dimensions
LTE Module Series EC20 Mini PCIe Hardware Design Mechanical Dimensions 5.1. General Description This chapter mainly describes the following dimensions of EC20 Mini PCIe: Mechanical Dimensions of EC20 Mini PCIe Standard Dimensions of Mini PCI Express Packaging 5.2. -
Page 34: Standard Dimensions Of Mini Pci Express
LTE Module Series EC20 Mini PCIe Hardware Design 5.3. Standard Dimensions of Mini PCI Express The following figure shows the standard Dimensions of Mini PCI Express. Please refer to document [1] for detailed A and B. Figure 17: Standard Dimensions of Mini PCI Express (Unit: mm) - Page 35 [1]. The following figure takes the Molex 679100002 as an example. Figure 18: Dimensions of the Mini PCI Express Connector (Unit: mm) 5.4. Packaging The EC20 Mini PCIe is packaged in tray. Each tray contains 10pcs of modules. The smallest package of EC20 Mini PCIe contains 100pcs. EC20_Mini_PCIe_Hardware_Design...
- Page 36 LTE Module Series EC20 Mini PCIe Hardware Design Appendix Reference Table 18: Related Documents Document Name Remark PCI Express Mini Card Electromechanical Mini PCI Express Specification Specification Revision 1.2 Quectel_EC20_AT_Commands_Manual EC20 AT Commands Manual Quectel_EC20_GNSS_AT_Commands_Manual EC20 GNSS AT Commands Manual...
- Page 37 LTE Module Series EC20 Mini PCIe Hardware Design HSPA High Speed Packet Access HSDPA High Speed Downlink Packet Access HSUPA High Speed Uplink Packet Access kbps Kilo Bits Per Second Light Emitting Diode Long-Term Evolution Mbps Million Bits Per Second...
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