Product Info

5G Module Series
RM500Q-AE&RM502Q-AE Hardware Design
RM500Q-AE&RM502Q-AE_Hardware_Design 8 / 83
Figure Index
Figure 1: Functional Diagram ..................................................................................................................... 16
Figure 2: Pin Assignment ........................................................................................................................... 18
Figure 3: Power Supply Limits during Radio Transmission ....................................................................... 24
Figure 4: Reference Circuit of VCC Pins ................................................................................................... 25
Figure 5: Reference Design of Power Supply ............................................................................................ 25
Figure 6: Turn-on Timing of the Module ..................................................................................................... 26
Figure 7: Turn on the Module with a Host GPIO ........................................................................................ 27
Figure 8: Turn-off Timing through FULL_CARD_POWER_OFF# ............................................................. 28
Figure 9: Turn-off Timing through AT Command and FULL_CARD_POWER_OFF# .............................. 28
Figure 10: Reference Circuit of RESET_N with NPN Driving Circuit ........................................................ 29
Figure 11: Reference Circuit of RESET_N with NMOS Driving Circuit ..................................................... 30
Figure 12: Resetting Timing of the Module ................................................................................................ 30
Figure 13: Reference Circuit for Normally Closed (U)SIM Card Connector .............................................. 32
Figure 14: Reference Circuit for Normally Open (U)SIM Card Connector ................................................ 32
Figure 15: Reference Circuit for a 6-Pin (U)SIM Card Connector ............................................................. 33
Figure 16: Reference Circuit of USB 3.1 & 2.0 Interface ........................................................................... 35
Figure 17: PCIe Interface Reference Circuit .............................................................................................. 37
Figure 18: PCIe Power-on Timing Requirements of M.2 Specification ..................................................... 38
Figure 19: PCIe Power-on Timing Requirements of the Module ............................................................... 38
Figure 20: Primary Mode Timing ................................................................................................................ 40
Figure 21: Auxiliary Mode Timing .............................................................................................................. 41
Figure 22: W_DISABLE1# and W_DISABLE2# Reference Circuit ........................................................... 44
Figure 23: WWAN_LED# Reference Circuit .............................................................................................. 44
Figure 24: WAKE_ON_WAN# Signal Reference Circuit ........................................................................... 45
Figure 25: Recommended Circuit of Configuration Pins ........................................................................... 48
Figure 26: RM500Q-AE&RM502Q-AE Reference Circuit of RF Antenna ................................................. 53
Figure 27: Microstrip Design on a 2-layer PCB ......................................................................................... 55
Figure 28: Coplanar Waveguide Design on a 2-layer PCB ....................................................................... 55
Figure 29: Coplanar Waveguide Design on a 4-layer PCB (Layer 3 as Reference Ground) .................... 55
Figure 30: Coplanar Waveguide Design on a 4-layer PCB (Layer 4 as Reference Ground) .................... 56
Figure 31: RM500Q-AE Antenna Connectors ........................................................................................... 57
Figure 32: RM502Q-AE Antenna Connectors ........................................................................................... 57
Figure 33: RM500Q-AE&RM502Q-AE RF Connector Dimensions (Unit: mm) ......................................... 60
Figure 34: Specifications of Mating Plugs Using Ø0.81 mm Coaxial Cables ............................................ 61
Figure 35: Connection between RF Connector and Mating Plug Using Ø0.81 mm Coaxial Cable .......... 61
Figure 36: Connection between RF Connector and Mating Plug Using Ø1.13 mm Coaxial Cable .......... 62
Figure 37: Thermal Dissipation Area on Bottom Side of Module .............................................................. 71
Figure 38: Mechanical Dimensions of the Module (Unit: mm) ................................................................... 73
Figure 39: RM500Q-AE Top View and Bottom view ................................................................................. 74
Figure 40: RM502Q-AE Top View and Bottom View ................................................................................. 74
Figure 41: Tray Size (Unit: mm) ................................................................................................................. 75