Quectel RM505Q-AE User manual

RM505Q-AE
Hardware Design
5G Module Series
Version: 1.0.0
Date: 2020-12-14
Status: Preliminary
www.quectel.com

5G Module Series
RM505Q-AE Hardware Design
RM505Q-AE_Hardware_Design 1 / 79
Our aim is to provide customers with timely and comprehensive service. For any assistance,
please contact our company headquarters:
Quectel Wireless Solutions Co., Ltd.
Building 5, Shanghai Business Park Phase III (Area B), No.1016 Tianlin Road, Minhang District, Shanghai
200233, China
Tel: [phone]
Email: [email protected]om
Or our local office. For more information, please visit:
http://www.quectel.com/support/sales.htm.
For technical support, or to report documentation errors, please visit:
http://www.quectel.com/support/technical.htm
Or email to [e-mail].
General Notes
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. All information supplied herein is subject to change without prior notice.
Disclaimer
While Quectel has made efforts to ensure that the functions and features under development are free
from errors, it is possible that these functions and features could contain errors, inaccuracies and
omissions. Unless otherwise provided by valid agreement, Quectel makes no warranties of any kind,
implied or express, with respect to the use of features and functions under development. To the maximum
extent permitted by law, Quectel excludes all liability for any loss or damage suffered in connection with
the use of the functions and features under development, regardless of whether such loss or damage
may have been foreseeable.
Duty of Confidentiality
The Receiving Party shall keep confidential all documentation and information provided by Quectel,
except when the specific permission has been granted by Quectel. The Receiving Party shall not access
or use Quectel’s documentation and information for any purpose except as expressly provided herein.
Furthermore, the Receiving Party shall not disclose any of the Quectel's documentation and information
to any third party without the prior written consent by Quectel. For any noncompliance to the above
requirements, unauthorized use, or other illegal or malicious use of the documentation and information,
Quectel will reserve the right to take legal action.

5G Module Series
RM505Q-AE Hardware Design
RM505Q-AE_Hardware_Design 2 / 79
Copyright
The information contained here is proprietary technical information of Quectel. Transmitting, reproducing,
disseminating and editing this document as well as using the content without permission are forbidden.
Offenders will be held liable for payment of damages. All rights are reserved in the event of a patent grant
or registration of a utility model or design.
Copyright © Quectel Wireless Solutions Co., Ltd. 2020. All rights reserved.

5G Module Series
RM505Q-AE Hardware Design
RM505Q-AE_Hardware_Design 3 / 79
About the Document
Revision History
Version
Date
Author
Description
-
2020-10-20
Jared WANG
Hank LIU
Creation of the document
1.0.0
2020-12-14
Jared WANG/
Simon WANG/
Hank LIU
Preliminary

5G Module Series
RM505Q-AE Hardware Design
RM505Q-AE_Hardware_Design 4 / 79
Contents
About the Document...................................................................................................................................3
Contents.......................................................................................................................................................4
Table Index...................................................................................................................................................6
Figure Index.................................................................................................................................................7
1Introduction..........................................................................................................................................9
1.1. Safety Information.....................................................................................................................10
2Product Concept................................................................................................................................11
2.1. General Description..................................................................................................................11
2.2. Key Features.............................................................................................................................12
2.3. Functional Diagram...................................................................................................................15
2.4. Evaluation Board.......................................................................................................................15
3Application Interfaces .......................................................................................................................16
3.1. Pin Assignment.........................................................................................................................17
3.2. Pin Description..........................................................................................................................18
3.3. Operating Modes.......................................................................................................................22
3.4. Power Supply............................................................................................................................23
3.4.1. Decrease Voltage Drop..................................................................................................23
3.4.2. Reference Design for Power Supply..............................................................................24
3.5. Turn on and off Scenarios.........................................................................................................25
3.5.1. Turn on the Module........................................................................................................25
3.5.2. Turn off the Module........................................................................................................26
3.5.2.1. Turn off the Module through FULL_CARD_POWER_OFF#..............................26
3.5.2.2. Turn off the Module through AT Command........................................................27
3.6. Reset the Module......................................................................................................................27
3.7. (U)SIM Interfaces......................................................................................................................30
3.8. USB Interface............................................................................................................................33
3.9. PCIe Interface...........................................................................................................................35
3.9.1. PCIe Operating Mode....................................................................................................35
3.9.2. USB and PCIe Modes....................................................................................................38
3.10. PCM Interface*..........................................................................................................................39
3.11. Control and Indication Interfaces..............................................................................................41
3.11.1. W_DISABLE1#...............................................................................................................41
3.11.2. W_DISABLE2#...............................................................................................................42
3.11.3. WWAN_LED#*...............................................................................................................43
3.11.4. WAKE_ON_WAN#.........................................................................................................44
3.11.5. DPR* ..............................................................................................................................45
3.11.6. STATUS*........................................................................................................................45
3.12. Cellular/WLAN Interface*..........................................................................................................45
3.13. Antenna Tuner Control Interface*.............................................................................................46
3.14. Configuration Pins.....................................................................................................................47

5G Module Series
RM505Q-AE Hardware Design
RM505Q-AE_Hardware_Design 5 / 79
4GNSS Receiver...................................................................................................................................48
4.1. General Description..................................................................................................................48
4.2. GNSS Performance..................................................................................................................48
5Antenna Interfaces.............................................................................................................................50
5.1. Antenna Connectors.................................................................................................................50
5.2. Cellular Antenna Port Mapping.................................................................................................51
5.3. Cellular Frequency....................................................................................................................52
5.4. GNSS Frequency......................................................................................................................53
5.5. Reference Design for Cellular Antenna Interfaces...................................................................55
5.6. Reference Design of RF Layout ...............................................................................................56
5.7. Antenna Installation ..................................................................................................................58
5.7.1. Antenna Requirements..................................................................................................58
5.7.2. Recommended RF Connector for Antenna Installation.................................................58
6Reliability, Radio and Electrical Characteristics............................................................................61
6.1. Absolute Maximum Ratings......................................................................................................61
6.2. Power Supply Requirements ....................................................................................................61
6.3. I/O Requirements......................................................................................................................62
6.4. Operating and Storage Temperatures......................................................................................62
6.5. Current Consumption................................................................................................................63
6.6. RF Output Power ......................................................................................................................68
6.7. RF Receiving Sensitivity...........................................................................................................68
6.8. ESD Characteristics..................................................................................................................71
6.9. Thermal Dissipation ..................................................................................................................72
7Mechanical Dimensions and Packaging .........................................................................................74
7.1. Mechanical Dimensions of the Module.....................................................................................74
7.2. Top and Bottom Views of the Module.......................................................................................75
7.3. M.2 Connector...........................................................................................................................75
7.4. Packaging .................................................................................................................................75
8Appendix References........................................................................................................................77

5G Module Series
RM505Q-AE Hardware Design
RM505Q-AE_Hardware_Design 6 / 79
Table Index
Table 1: Frequency Bands and GNSS Systems of RM505Q-AE Module.................................................11
Table 2: Key Features of RM505Q-AE......................................................................................................12
Table 3: Definition of I/O Parameters......................................................................................................... 18
Table 4: Pin Description............................................................................................................................. 18
Table 5: Overview of Operating Modes.....................................................................................................22
Table 6: Definition of VCC and GND Pins.................................................................................................23
Table 7: Definition of FULL_CARD_POWER_OFF# Pin........................................................................... 25
Table 8: Definition of RESET_N Pin..........................................................................................................28
Table 9: Pin Definition of (U)SIM Interfaces .............................................................................................. 30
Table 10: Pin Definition of USB Interface..................................................................................................33
Table 11: Pin Definition of PCIe Interface.................................................................................................. 35
Table 12: Pin Definition of PCM Interface.................................................................................................. 40
Table 13: Pin Definition of Control and Indication Interfaces..................................................................... 41
Table 14: RF Function Status ....................................................................................................................42
Table 15: GNSS Function Status...............................................................................................................42
Table 16: Network Status Indications of WWAN_LED# Signal.................................................................44
Table 17: State of the WAKE_ON_WAN# Signal...................................................................................... 44
Table 18: Function of the DPR Signal........................................................................................................ 45
Table 19: Pin Definition of COEX Interface ............................................................................................... 45
Table 20: Pin Definition of Antenna Tuner Control Interface..................................................................... 46
Table 21: Definition of Configuration Pins..................................................................................................47
Table 22: Configuration Pins List of M.2 Specification.............................................................................. 47
Table 23: GNSS Performance ...................................................................................................................48
Table 24: RF Bands Supported by RM505Q-AE Antenna Connectors..................................................... 51
Table 25: RM505Q-AE Cellular Antenna Mapping.................................................................................... 51
Table 26: RM505Q-AE Module Operating Frequencies............................................................................52
Table 27: GNSS Frequency....................................................................................................................... 54
Table 28: Antenna Requirements.............................................................................................................. 58
Table 29: Major Specifications of the RF Connector................................................................................. 59
Table 30: Absolute Maximum Ratings.......................................................................................................61
Table 31: Power Supply Requirements .....................................................................................................61
Table 32: I/O Requirements....................................................................................................................... 62
Table 33: Operating and Storage Temperatures....................................................................................... 62
Table 34: RM505Q-AE Current Consumption........................................................................................... 63
Table 35: RF Output Power .......................................................................................................................68
Table 36: RM505Q-AE Conducted RF Receiving Sensitivity.................................................................... 68
Table 37: Electrostatic Discharge Characteristics (Temperature: 25 ºC, Humidity: 40 %).......................71
Table 38: Related Documents....................................................................................................................77
Table 39: Terms and Abbreviations........................................................................................................... 77

5G Module Series
RM505Q-AE Hardware Design
RM505Q-AE_Hardware_Design 7 / 79
Figure Index
Figure 1: Functional Block Diagram........................................................................................................... 15
Figure 2: Pin Assignment...........................................................................................................................17
Figure 3: Power Supply Limits during Radio Transmission....................................................................... 23
Figure 4: Reference Circuit for VCC Pins..................................................................................................24
Figure 5: Reference Design of Power Supply............................................................................................24
Figure 6: Turn-on Timing of the Module.....................................................................................................25
Figure 7: Turn on the Module with a Host GPIO........................................................................................26
Figure 8: Turn-off Timing through FULL_CARD_POWER_OFF#............................................................. 27
Figure 9: Turn-off Timing through AT Command and FULL_CARD_POWER_OFF#.............................. 27
Figure 10: Reference Circuit for RESET_N with NPN Driving Circuit....................................................... 28
Figure 11: Reference Circuit for RESET_N with NMOS Driving Circuit....................................................29
Figure 12: Reference Circuit for RESET_N with Button............................................................................ 29
Figure 13: Resetting Timing of the Module................................................................................................30
Figure 14: Reference Circuit for Normally Closed (U)SIM Card Connector.............................................. 31
Figure 15: Reference Circuit for Normally Open (U)SIM Card Connector................................................ 32
Figure 16: Reference Circuit for a 6-Pin (U)SIM Card Connector.............................................................32
Figure 17: Reference Circuit for USB 3.1/2.0 Interface.............................................................................34
Figure 18: PCIe Interface Reference Circuit.............................................................................................. 36
Figure 19: PCIe Power-on Timing Requirements of M.2 Specification.....................................................37
Figure 20: PCIe Power-on Timing Requirements of the Module............................................................... 37
Figure 21: Primary Mode Timing................................................................................................................ 39
Figure 22: Auxiliary Mode Timing ..............................................................................................................40
Figure 23: W_DISABLE1# and W_DISABLE2# Reference Circuit...........................................................43
Figure 24: WWAN_LED# Reference Circuit..............................................................................................43
Figure 25: WAKE_ON_WAN# Signal Reference Circuit........................................................................... 44
Figure 26: Recommended Circuit for Configuration Pins.......................................................................... 47
Figure 27: Antenna Connectors on the Module......................................................................................... 50
Figure 28: Reference Circuit of GNSS Antenna........................................................................................ 54
Figure 29: Reference Design for Cellular Antenna.................................................................................... 55
Figure 30: Microstrip Design on a 2-layer PCB .........................................................................................56
Figure 31: Coplanar Waveguide Design on a 2-layer PCB.......................................................................56
Figure 32: Coplanar Waveguide Design on a 4-layer PCB (Layer 3 as Reference Ground).................... 56
Figure 33: Coplanar Waveguide Design on a 4-layer PCB (Layer 4 as Reference Ground).................... 57
Figure 34: RM505Q-AE RF Connector Dimensions (Unit: mm)................................................................ 58
Figure 35: Specifications of Mating Plugs Using Ø 0.81 mm Coaxial Cables...........................................59
Figure 36: Connection between RF Connector and Mating Plug Using Ø 0.81 mm Coaxial Cable......... 60
Figure 37: Connection between RF Connector and Mating Plug Using Ø 1.13 mm Coaxial Cable......... 60
Figure 38: Thermal Dissipation Area on Both Sides of Module (Unit: mm)...............................................72
Figure 39: Mechanical Dimensions of RM505Q-AE (Unit: mm)................................................................74
Figure 40: TOP & Bottom View of the Module...........................................................................................75
Figure 41: Tray Size (Unit: mm)................................................................................................................. 76

5G Module Series
RM505Q-AE Hardware Design
RM505Q-AE_Hardware_Design 8 / 79
Figure 42: Tray Packaging Procedure.......................................................................................................76

5G Module Series
RM505Q-AE Hardware Design
RM505Q-AE_Hardware_Design 9 / 79
1Introduction
This document introduces RM505Q-AE module and describes its air interface and hardware interfaces
which are connected with customers’ applications.
This document helps you quickly understand the interface specifications, electrical and mechanical
details, as well as other related information of the module. To facilitate its application in different fields,
reference design is also provided for reference. Coupled with application notes and user guides, you can
easily design and set up mobile applications with RM505Q-AE.

5G Module Series
RM505Q-AE Hardware Design
RM505Q-AE_Hardware_Design 10 / 79
1.1. 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 the module. Manufacturers of the cellular terminal
should notify users and operating personnel of the following safety information by incorporating these
guidelines into all manuals of the product. Otherwise, Quectel assumes no liability for customers’ failure to
comply with these precautions.
Full attention must be paid to driving at all times in order to reduce the risk of an
accident. Using a mobile while driving (even with a handsfree kit) causes
distraction and can lead to an accident. Please comply with laws and regulations
restricting the use of wireless devices while driving.
Switch off the cellular terminal or mobile before boarding an aircraft. The operation
of wireless appliances in an aircraft is forbidden to prevent interference with
communication systems. If there is an Airplane Mode, it should be enabled prior to
boarding an aircraft. Please consult the airline staff for more restrictions on the use
of wireless devices on an aircraft.
Wireless devices may cause interference on sensitive medical equipment, so
please be aware of the restrictions on the use of wireless devices when in
hospitals, clinics or other healthcare facilities.
Cellular terminals or mobiles operating over radio signal and cellular network
cannot be guaranteed to connect in certain conditions, such as when the mobile bill
is unpaid or the (U)SIM card is invalid. When emergent help is needed in such
conditions, use emergency call if the device supports it. In order to make or receive
a call, the cellular terminal or mobile must be switched on in a service area with
adequate cellular signal strength. In an emergency, the device with emergency call
function cannot be used as the only contact method considering network
connection cannot be guaranteed under all circumstances.
The cellular terminal or mobile contains a transceiver. When it is ON, it receives
and transmits radio frequency signals. RF interference can occur if it is used close
to TV sets, radios, computers or other electric equipment.
In locations with explosive or potentially explosive atmospheres, obey all posted
signs and turn off wireless devices such as mobile phone or other cellular
terminals. Areas with explosive or potentially explosive atmospheres include
fuelling areas, below decks on boats, fuel or chemical transfer or storage facilities,
and areas where the air contains chemicals or particles such as grain, dust or
metal powders.

5G Module Series
RM505Q-AE Hardware Design
RM505Q-AE_Hardware_Design 11 / 79
2Product Concept
2.1. General Description
RM505Q-AE is a 5G NR/LTE-A/UMTS/HSPA+ wireless communication module with receive diversity. It
provides data connectivity on 5G NR SA and NSA, LTE-FDD, LTE-TDD, DC-HSDPA, HSPA+, HSDPA,
HSUPA and WCDMA networks and a standard PCI Express M.2 interface.
It supports embedded operating systems such as Windows, Linux and Android, and also provides GNSS
and voice functionality to meet specific application demands.
The following table shows the frequency bands and GNSS systems of RM505Q-AE module.
Table 1: Frequency Bands and GNSS Systems of RM505Q-AE Module
1. LTE-FDD B29/B32 and LTE-TDD B46 are supported for receiving only.
2. “*” means under development.
RM505Q-AE can be applied in the following fields:
⚫Rugged tablet PC and laptop computer
⚫Remote monitor system
Mode
RM505Q-AE
5G NR
n1/n2/n3/n5/n7/n8/n12/n20/n25/n28/n38/n40/n41/n48*/n66/n71/n77/n78/n79
LTE-FDD
B1/B2/B3/B4/B5/B7/B8//B12/B13/B14/B17/B18/B19/B20/B25/B26/B28/B29/B30/B
32/B66/B71
LTE-TDD
B34/B38/B39/B40/B41/B42/B43/B46/B48
WCDMA
B1/B2/B3/B4/B5/B6/B8/B19
GNSS
GPS/GLONASS/BeiDou/Galileo
NOTES

5G Module Series
RM505Q-AE Hardware Design
RM505Q-AE_Hardware_Design 12 / 79
⚫Smart metering system
⚫Wireless router and switch
⚫Other wireless terminal devices
2.2. Key Features
The following table describes key features of RM505Q-AE.
Table 2: Key Features of RM505Q-AE
Feature
Details
Function Interface
⚫PCI Express M.2 Interface
Power Supply
⚫Supply voltage: 3.135–4.4 V
⚫Typical supply voltage: 3.7 V
Transmitting Power
⚫Class 3 (24 dBm +1/-3 dB) for WCDMA bands
⚫Class 3 (23 dBm ±2 dB) for LTE bands
⚫Class 3 (23 dBm ±2 dB) for 5G NR bands
⚫Class 2 (26 dBm ±2 dB) for LTE B38/B40/B41/B42/B43 bandsHPUE 1)
⚫Class 2 (26 dBm +2/-3 dB) for 5G NR n41/n77/n78/n79 bands HPUE 1)
5G NR Features
⚫3GPP Rel-15
⚫Modulation:
- Uplink 256QAM
- Downlink 256QAM
⚫Support downlink 4 ×4 MIMO on:
n1/n2/n3/n7/25/n38/n40/n41/n48/n66/n77/n78/n79
⚫Support SCS 15 kHz and 30 kHz
⚫Support SA and NSA operation modes
⚫Support NSA on 5G bands
⚫Support SA on 5G bands
⚫Support Option 3x, 3a, and Option 2
⚫NSA TDD: Max 2.5 Gbps(DL)/ 650 Mbps (UL)
⚫SA TDD: Max 2.1 Gbps(DL)/ 450 Mbps (UL)
LTE Features
⚫Support up to CA Cat 16 FDD and TDD
⚫Support uplink QPSK, 16QAM and 64QAM and 256QAM modulation
⚫Support downlink QPSK, 16QAM and 64QAM and 256QAM modulation
⚫Support 1.4 MHz to 20 MHz (3CA) RF bandwidth
⚫Support downlink 4 ×4 MIMO on:
- B1/B2/B3/B4/B7/B25/B30/B38/B39/B40/B41/B42/B43/B48/B66
⚫LTE: Max 1.0 Gbps(DL)/ 200 Mbps (UL)
UMTS Features
⚫Support 3GPP R8 DC-HSDPA, HSPA+, HSDPA, HSUPA and WCDMA

5G Module Series
RM505Q-AE Hardware Design
RM505Q-AE_Hardware_Design 13 / 79
⚫Support QPSK, 16QAM and 64QAM modulation
⚫DC-HSDPA: Max 42 Mbps (DL)
⚫HSUPA: Max 5.76 Mbps (UL)
⚫WCDMA: Max 384 kbps (DL)/384 kbps (UL)
Internet Protocol
Features
⚫QMI/NTP* protocols
⚫The protocols PAP and EIRP usually used for PPP connections
SMS
⚫Text and PDU modes
⚫Point-to-point MO and MT
⚫SMS cell broadcast
⚫SMS storage: ME by default
(U)SIM Interfaces
⚫Support (U)SIM card: Class B (3.0 V) and Class C(1.8 V)
⚫(U)SIM1 and (U)SIM2 interfaces
⚫Dual SIM Single Standby*
USB Interface
⚫Compliant with USB 3.1 and 2.0 specifications, with maximum transmission
rates up to 10 Gbps on USB 3.1 and 480 Mbps on USB 2.0.
⚫Used for AT command communication, data transmission, firmware
upgrade, software debugging, GNSS NMEA sentence output.
⚫USB serial drivers for:
- Windows 7/8/8.1/10
- Linux 2.6–5.4
- Android 4.x/5.x/6.x/7.x/8.x/9.x/10
PCIe Interface
⚫Complaint with PCIe Gen3, support 8 Gbps per lane.
⚫Used for AT command communication, data transmission, firmware
upgrade, software debugging, GNSS NMEA sentence output.
Rx-diversity
⚫5G NR/LTE/WCDMA Rx-diversity
GNSS Features
⚫Gen9 Lite of Qualcomm
⚫Protocol: NMEA 0183
⚫Data Update Rate: 1 Hz
AT Commands
⚫Compliant with 3GPP TS 27.007 and 3GPP TS 27.005
⚫Quectel enhanced AT commands
Antenna Interfaces
⚫ANT0, ANT1, ANT2, ANT3 and ANT4_GNSS
Physical
Characteristics
⚫Size: (52.0 ±0.15) mm ×(30.0 ±0.15) mm ×(2.3 ±0.2) mm
⚫Weight: TBD
Temperature Range
⚫Operating temperature range: -20 °C to +60 °C 2)
⚫Restricted operating temperature range: -30 °C to -20 °C, +60 °C to +70 °C
⚫Extended temperature range: -40 °C to -30 °C, +70 °C to +85 °C 3)
⚫Storage temperature range: -40°C to +90 °C
Firmware Upgrade
⚫USB 2.0 interface
⚫PCIe interface
⚫DFOTA*
RoHS
All hardware components are fully compliant with EU RoHS directive

5G Module Series
RM505Q-AE Hardware Design
RM505Q-AE_Hardware_Design 14 / 79
1. 1) HPUE is only for single carrier.
2. 2) To meet this operating temperature range, you need to ensure effective thermal dissipation, for
example, by adding passive or active heatsinks, heat pipes, vapor chambers, etc. Within this range,
the module can meet 3GPP specifications.
3. 3) To meet this extended temperature range, you need to ensure effective thermal dissipation, for
example, by adding passive or active heatsinks, heat pipes, vapor chambers, etc. Within this range,
the module remains the ability to establish and maintain functions such as voice, SMS, emergency
call, etc., without any unrecoverable malfunction. Radio spectrum and radio network are not
influenced, while one or more specifications, such as Pout, may undergo a reduction in value,
exceeding the specified tolerances of 3GPP. When the temperature returns to the normal operating
temperature level, the module will meet 3GPP specifications again.
4. “*” means under development.
NOTES

5G Module Series
RM505Q-AE Hardware Design
RM505Q-AE_Hardware_Design 15 / 79
2.3. Functional Diagram
The following figure shows the functional block diagram of RM505Q-AE.
Baseband
PMIC
Sub-6 GHz
Transceiver
ANT0
ANT3
ANT2
ET
VCC
RESET_N
38.4M
XO
SPMI
IQ
Control
Tx
PRx
DRx
PCI Express M.2 Key-B Interface
FULL_CARD_POWER_OFF#
W_DISABLE2#
USB 2.0 & USB 3.1
(U)SIM1
WWAN_LED#
WAKE_ON_WAN#
4Gb NAND 4Gb x8
4Gb LPDDR4X SDRAM 4Gb x16
RFFE
W_DISABLE1#
GPIOs
Tx/Rx Blocks
ANT1
PCIe ×1
(U)SIM2
GND
ANT4_GNSS
Figure 1: Functional Block Diagram
2.4. Evaluation Board
To help you develop applications conveniently with RM505Q-AE, Quectel supplies an evaluation board
(PCIe Card EVB), a USB to RS-232 converter cable, a USB type-C cable, antennas and other peripherals
to control or test the module. For more details, see document [1].

5G Module Series
RM505Q-AE Hardware Design
RM505Q-AE_Hardware_Design 16 / 79
3Application Interfaces
The physical connections and signal levels of RM505Q-AE comply with PCI Express M.2 specification.
This chapter mainly describes the definition and application of the following interfaces/pins of
RM505Q-AE:
⚫Power supply
⚫(U)SIM interfaces
⚫USB interface
⚫PCIe interface
⚫PCM interface*
⚫Control and indication interfaces
⚫Cellular/WLAN COEX interface*
⚫Antenna tuner control interface*
⚫Configuration pins
“*” means under development.
NOTE

5G Module Series
RM505Q-AE Hardware Design
RM505Q-AE_Hardware_Design 17 / 79
3.1. Pin Assignment
The following figure shows the pin assignment of RM505Q-AE. The top side contains RM505Q-AE
module and antenna connectors.
PIN2
PIN74
BOT
PIN1
PIN75
TOP
Pin Name No.
CONFIG_2 75
GND 73
GND 71
CONFIG_1 69
RESET_N 67
RFFE_VIO_1V8 65
ANTCTL2 63
ANTCTL1 61
LAA_TX_EN 59
GND 57
PCIE_REFCLK_P 55
PCIE_REFCLK_M 53
GND 51
PCIE_RX_P 49
PCIE_RX_M 47
GND 45
PCIE_TX_P 43
PCIE_TX_M 41
GND 39
USB_SS_RX_P 37
USB_SS_RX_M 35
GND 33
USB_SS_TX_P 31
USB_SS_TX_M 29
GND 27
DPR 25
WAKE_ON_WAN# 23
CONFIG_0 21
Notch
Notch
Notch
Notch
GND 11
USB_DM 9
USB_DP 7
GND 5
GND 3
CONFIG_3 1
PIN11
PIN10
No. Pin Name
74 VCC
72 VCC
70 VCC
68 AP2SDX_STATUS
66 USIM1_DET
64 COEX_TXD
62 COEX_RXD
60 WLAN_TX_EN
58 RFFE_DATA
56 RFFE_CLK
54 PCIE_WAKE_N
52 PCIE_CLKREQ_N
50 PCIE_RST_N
48 USIM2_VDD
46 USIM2_RST
44 USIM2_CLK
42 USIM2_DATA
40 USIM2_DET
38 SDX2AP_STATUS
36 USIM1_VDD
34 USIM1_DATA
32 USIM1_CLK
30 USIM1_RST
28 PCM_SYNC
26 W_DISABLE2#
24 PCM_DOUT
22 PCM_DIN
20 PCM_CLK
Notch
Notch
Notch
Notch
10 WWAN_LED#
8 W_DISABLE1#
6FULL_CARD_POWER_OFF#
4 VCC
2 VCC
Figure 2: Pin Assignment

5G Module Series
RM505Q-AE Hardware Design
RM505Q-AE_Hardware_Design 18 / 79
3.2. Pin Description
Table 3: Definition of I/O Parameters
The following table shows the pin definition and description of RM505Q-AE.
Table 4: Pin Description
Type
Description
AI
Analog Input
AO
Analog Output
DI
Digital Input
DO
Digital Output
IO
Bidirectional
OD
Open Drain
PI
Power Input
PO
Power Output
Pin No.
Pin Name
I/O
Description
Comment
1
CONFIG_3
DO
Not connected internally
2
VCC
PI
Power supply for the
module
Vmin = 3.135 V
Vnorm = 3.7 V
Vmax = 4.4 V
3
GND
Ground
4
VCC
PI
Power supply
Vmin = 3.135 V
Vnorm = 3.7 V
Vmax = 4.4 V
5
GND
Ground
6
FULL_CARD_POWER_
OFF#
DI
Turn on/off of the module.
Internally pulled down
with a
100 kΩ resistor
When it is at low voltage
level, the module is

5G Module Series
RM505Q-AE Hardware Design
RM505Q-AE_Hardware_Design 19 / 79
turned off.
When it is at high
voltage level, the
module is turned on.
7
USB_DP
AI,
AO
USB differential data (+)
Requires differential
impedance of 90 Ω
8
W_DISABLE1#
DI
Airplane mode control.
1.8/3.3 V power domain.
Active LOW.
9
USB_DM
AI,
AO
USB differential data (-)
Requires differential
impedance of 90 Ω
10
WWAN_LED#*
OD
RF status indication LED
Open drain and active
low signal.
11
GND
Ground
12
Notch
Notch
13
Notch
Notch
14
Notch
Notch
15
Notch
Notch
16
Notch
Notch
17
Notch
Notch
18
Notch
Notch
19
Notch
Notch
20
PCM_CLK*
IO
PCM data bit clock
1.8 V power domain
21
CONFIG_0
DO
Not connected internally
22
PCM_DIN*
DI
PCM data input
1.8 V power domain
23
WAKE_ON_WAN#
OD
Wake up the host.
Open drain
Active LOW.
24
PCM_DOUT*
DO
PCM data output
1.8 V power domain
25
DPR*
DI
Dynamic power reduction.
High voltage level by
default.
1.8 V power domain
26
W_DISABLE2#
DI
GNSS disable control.
1.8/3.3 V power domain
Active LOW.
27
GND
Ground