Quectel QuecOpen AG521R-NA Supplement

AG521R-NA QuecOpen
Hardware Design
Automotive Module Series
Version: 1.0.0
Date: 2021-01-26
Status: Preliminary
www.quectel.com

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About the Document
Revision History
Version
Date
Author
Description
-
2020-04-04
Leon HUANG/
Alex ZHANG/ Evan
SHEN/
Creation of the document
1.0
2021-01-26
Charlie Bao/
Jacky CHEN/ Evan
SHEN
Preliminary

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Contents
About the Document...................................................................................................................................................3
Contents.......................................................................................................................................................................4
Table Index..................................................................................................................................................................6
Figure Index................................................................................................................................................................8
1Introduction ......................................................................................................................................................10
1.1. Safety Information..................................................................................................................................12
2Product Concept...............................................................................................................................................14
2.1. General Description................................................................................................................................ 14
2.2. Key Features...........................................................................................................................................15
2.3. Functional Diagram................................................................................................................................17
2.4. Evaluation Board....................................................................................................................................18
3Application Interfaces......................................................................................................................................19
3.1. General Description................................................................................................................................ 19
3.2. Pin Assignment....................................................................................................................................... 20
3.3. Pin Description....................................................................................................................................... 21
3.4. Operating Modes .................................................................................................................................... 37
3.5. Power Saving..........................................................................................................................................37
3.5.1. Sleep Mode................................................................................................................................. 37
3.5.1.1. USBApplication with USB Remote Wakeup Function..................................................38
3.5.1.2. USB Application without USB Remote Wakeup Function............................................. 38
3.5.1.3. USB Application without USB Suspend Function.......................................................... 39
3.5.2. Airplane Mode............................................................................................................................ 40
3.6. Power Supply..........................................................................................................................................40
3.6.1. Power Supply Pins......................................................................................................................40
3.6.2. Decrease Voltage Drop................................................................................................................41
3.6.3. Reference Design for Power Supply...........................................................................................42
3.6.4. Monitor the Power Supply..........................................................................................................42
3.7. Power on and off Scenarios.................................................................................................................... 42
3.7.1. Turn on Module with PWRKEY ................................................................................................ 42
3.7.2. Turn on Module with PON_1 ..................................................................................................... 44
3.7.3. Turn off Module..........................................................................................................................45
3.7.3.1. Turn off Module Using PWRKEY .................................................................................45
3.7.3.2. Turn off Module Using API Interface............................................................................. 46
3.8. Reset the Module....................................................................................................................................46
3.9. (U)SIM Interfaces...................................................................................................................................48
3.10. USB Interfaces........................................................................................................................................50
3.11. UART Interfaces.....................................................................................................................................52
3.12. I2S and I2C Interfaces............................................................................................................................ 54

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3.13. SDIO Interface........................................................................................................................................55
3.14. SPI Interfaces..........................................................................................................................................58
3.15. RGMII Interface ..................................................................................................................................... 59
3.16. WLAN and BT Interfaces*.....................................................................................................................62
3.17. ADC Interfaces....................................................................................................................................... 65
3.18. USB_BOOT Interface.............................................................................................................................66
3.19. GPIO Interfaces...................................................................................................................................... 66
4Antenna Interfaces............................................................................................................................................68
4.1. Main/Rx-diversity Antenna Interface ..................................................................................................... 68
4.1.1. Pin Definition.............................................................................................................................. 68
4.1.2. Operating Frequency...................................................................................................................68
4.1.3. Reference Design of RFAntenna Interfaces............................................................................... 69
4.1.4. Reference Design of RF Layout .................................................................................................70
4.2. Antenna Installation................................................................................................................................ 72
4.2.1. Antenna Requirements................................................................................................................ 72
4.2.2. Recommended RF Connector for Antenna Installation.............................................................. 72
5Reliability, Radio and Electrical Characteristics...........................................................................................74
5.1. Absolute Maximum Ratings...................................................................................................................74
5.2. Power Supply Ratings.............................................................................................................................74
5.3. Operation and Storage Temperatures...................................................................................................... 75
5.4. Current Consumption..............................................................................................................................75
5.5. RF Output Power.................................................................................................................................... 76
5.6. RF Receiving Sensitivity........................................................................................................................77
5.7. Electrostatic Discharge........................................................................................................................... 78
5.8. Thermal Consideration ...........................................................................................................................78
6Mechanical Dimensions.................................................................................................................................... 81
6.1. Mechanical Dimensions.......................................................................................................................... 81
6.2. Recommended Footprint ........................................................................................................................83
6.3. Top and Bottom Views............................................................................................................................84
7Storage, Manufacturing and Packaging.........................................................................................................85
7.1. Storage....................................................................................................................................................85
7.2. Manufacturing and Soldering ................................................................................................................. 86
7.3. Packaging................................................................................................................................................87
8Appendix A References....................................................................................................................................89

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Table Index
Table 1: Frequency Bands of AG521R-NA QuecOpen®Module.............................................................................. 14
Table 2: Key Features................................................................................................................................................ 15
Table 3: I/O Parameters Definition............................................................................................................................ 21
Table 4: Pin Description ............................................................................................................................................ 22
Table 5:Alternate Functions of Multiplexing Pins.................................................................................................... 33
Table 6: Overview of Operating Modes .................................................................................................................... 37
Table 7: VBAT and GND Pins................................................................................................................................... 40
Table 8: PWRKEY Pin Description........................................................................................................................... 42
Table 9: PON_1 Pin Description ............................................................................................................................... 44
Table 10: RESET Pin Description ............................................................................................................................. 46
Table 11: Pin Definition of (U)SIM Interface............................................................................................................ 48
Table 12: Pin Description of USB Interface.............................................................................................................. 50
Table 13: Pin Definition of UART1 Interface............................................................................................................ 52
Table 14: Pin Definition of BT UART Interface........................................................................................................ 52
Table 15: Pin Definition of Debug UART Interface.................................................................................................. 53
Table 16: Logic Levels of Digital I/O........................................................................................................................ 53
Table 17: Pin Definition of I2S Interface................................................................................................................... 54
Table 18: Pin Definition of I2C Interface.................................................................................................................. 55
Table 19: Pin Definition of SDIO Interface............................................................................................................... 55
Table 20: Pin Definition of SPI Interfaces................................................................................................................. 58
Table 21: Parameters of SPI Interface Timing........................................................................................................... 58
Table 22: Pin Definition of RGMII Interface ............................................................................................................ 59
Table 23: Pin Definition of WLAN and BT Interfaces.............................................................................................. 62
Table 24: Pin Definition ofADC Interfaces .............................................................................................................. 65
Table 25: Characteristic of ADC Interface................................................................................................................. 65
Table 26: Pin Definition of USB_BOOT Interface.................................................................................................... 66
Table 27: Pin Definition of GPIOs ............................................................................................................................ 67
Table 28: Pin Definition of Main/Rx-diversity Antenna Interfaces........................................................................... 68
Table 29: Module Operating Frequencies.................................................................................................................. 68
Table 30:Antenna Requirements............................................................................................................................... 72
Table 31: Absolute Maximum Ratings ...................................................................................................................... 74
Table 32: Power Supply Ratings................................................................................................................................ 74
Table 33: Operation and Storage Temperatures......................................................................................................... 75
Table 34: Module Current Consumption (25 °C, 3.8 V Power Supply).................................................................... 76
Table 35: RF Output Power....................................................................................................................................... 77
Table 36: RF Receiving Sensitivity (Unit: dBm)....................................................................................................... 77
Table 37: Electrostatic Discharge Characteristics...................................................................................................... 78
Table 38: Recommended Thermal Profile Parameters .............................................................................................. 86
Table 39: Related Documents.................................................................................................................................... 89
Table 40: Terms andAbbreviations ........................................................................................................................... 89
Table 41: Description of Different Coding Schemes................................................................................................. 92

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Table 42: GPRS Multi-slot Classes ........................................................................................................................... 92
Table 43: EDGE Modulation and Coding Schemes .................................................................................................. 92

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Figure Index
Figure 1: Functional Diagram forAG521R-NAQuecOpen®.................................................................................... 18
Figure 2: PinAssignment (Top View) ....................................................................................................................... 20
Figure 3: Sleep Mode Current Consumption Diagram.............................................................................................. 38
Figure 4: Sleep Mode Application with USB Remote Wakeup................................................................................. 38
Figure 5: Sleep Mode Application without USB Remote Wakeup............................................................................ 39
Figure 6: Sleep Mode Application without Suspend Function.................................................................................. 40
Figure 7: Power Supply Limits during Burst Transmission....................................................................................... 41
Figure 8: VBAT Reference Design............................................................................................................................ 41
Figure 9: 12/24 V Power Supply System Reference Design ..................................................................................... 42
Figure 10: Turn on the Module Using Driving Circuit.............................................................................................. 43
Figure 11: Turn on the Module Using Keystroke...................................................................................................... 43
Figure 12: Power-on Timing...................................................................................................................................... 44
Figure 13: Turn on the Module using PON_1 ........................................................................................................... 45
Figure 14: Power-off Timing..................................................................................................................................... 45
Figure 15: Reference Circuit of RESET by Using Driving Circuit........................................................................... 47
Figure 16: Reference Circuit of RESET by Using Button......................................................................................... 47
Figure 17: Timing of Resetting Module .................................................................................................................... 47
Figure 18: Reference Circuit of (U)SIM Interface with an 8-Pin (U)SIM Card Connector...................................... 49
Figure 19: Reference Circuit of (U)SIM Interface with a 6-Pin (U)SIM Card Connector........................................ 49
Figure 20: Reference Circuit of USB 2.0Application............................................................................................... 51
Figure 21: Reference Circuit of USB 3.0Application............................................................................................... 51
Figure 22: Reference Circuit with Translator Chip.................................................................................................... 53
Figure 23: Reference Circuit with Transistor Circuit ................................................................................................ 54
Figure 24: Reference Circuit of I2S and I2CApplication with Audio Codec ........................................................... 55
Figure 25: Reference Design of SDIO Interface for eMMCApplication.................................................................. 57
Figure 26: SPI Timing ............................................................................................................................................... 58
Figure 27: Simplified Block Diagram for EthernetApplication................................................................................ 60
Figure 28: Reference Circuit of RGMII Interface with PHYApplication................................................................. 61
Figure 29: Reference Circuit for Connection with WLAN&BT PHY....................................................................... 64
Figure 30: Reference Circuit of USB_BOOT Interface............................................................................................. 66
Figure 31: Reference Circuit of RF Antenna Interfaces ............................................................................................ 69
Figure 32: Microstrip Design on a 2-layer PCB........................................................................................................ 70
Figure 33: Coplanar Waveguide Design on a 2-layer PCB........................................................................................ 70
Figure 34: Coplanar Waveguide Design on a 4-layer PCB (Layer 3 as Reference Ground)..................................... 71
Figure 35: Coplanar Waveguide Design on a 4-layer PCB (Layer 4 as Reference Ground)..................................... 71
Figure 36: Description of the HFM Connector.......................................................................................................... 73
Figure 37: Referenced Heatsink Design (Heatsink at the Top of the Module).......................................................... 79
Figure 38: Referenced Heatsink Design (Heatsink at the Backside of Customers’ PCB) ......................................... 79
Figure 39: Module Top and Side Dimensions ........................................................................................................... 81
Figure 40: Module Bottom Dimensions (Top View)................................................................................................. 82
Figure 41: Recommended Footprint (Top View)....................................................................................................... 83

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Figure 42: Top View of the Module........................................................................................................................... 84
Figure 43: Bottom View of the Module..................................................................................................................... 84
Figure 44: Recommended Reflow Soldering Thermal Profile .................................................................................. 86
Figure 45: Tape Specifications .................................................................................................................................. 88
Figure 46: Reel Specifications................................................................................................................................... 88