Product Info

LTE-A Module Series
EM121R-GL Hardware Design
EM121R-GL Hardware Design 10 / 80
Figure Index
Figure 1: Functional Diagram ..................................................................................................................... 18
Figure 2: Pin Assignment ........................................................................................................................... 19
Figure 3: DRX Run Time and Current Consumption in Sleep Mode ......................................................... 26
Figure 4: Sleep Mode Application with USB Remote Wakeup .................................................................. 26
Figure 5: Power Supply Limits during Radio Transmission ....................................................................... 28
Figure 6: Reference Circuit for the VCC .................................................................................................... 28
Figure 7: Reference Circuit for the Power Supply ..................................................................................... 29
Figure 8: Turn on the Module with a Host GPIO ........................................................................................ 30
Figure 9: Turn-on Timing of the Module ..................................................................................................... 30
Figure 10: Turn-off Timing through FULL_CARD_POWER_OFF# ........................................................... 31
Figure 11: Reference Circuit for the RESET# with NPN Driver Circuit ..................................................... 32
Figure 12: Reference Circuit for the RESET# with a Button...................................................................... 32
Figure 13: Reset Timing of the Module ...................................................................................................... 33
Figure 14: Reference Circuit for Normally Closed (U)SIM Card Connector .............................................. 37
Figure 15: Reference Circuit for Normally Open (U)SIM Card Connector ................................................ 37
Figure 16: Reference Circuit for a 6-Pin (U)SIM Card Connector ............................................................. 38
Figure 17: Recommended Compatible Design for (U)SIM2 Interface ....................................................... 38
Figure 18: Reference Circuit for the USB 3.0 & 2.0 Interface.................................................................... 40
Figure 19: PCIe Interface Reference Circuit .............................................................................................. 42
Figure 20: PCIe Power-on Timing Requirements of M.2 Specification ..................................................... 43
Figure 20: PCIe Turn-on Timing of the Module ..................................................................................... 44
Figure 21: PCIe Turn-off Timing through FULL_CARD_POWER_OFF# .................................................. 45
Figure 22: PCIe Reset Timing .................................................................................................................... 45
Figure 23: PCIe D3 Hot State Timing ........................................................................................................ 46
Figure 24: PCIe D3 Cold Timing ................................................................................................................ 47
Figure 25: Primary Mode Timing ................................................................................................................ 48
Figure 26: Auxiliary Mode Timing .............................................................................................................. 48
Figure 27: W_DISABLE1# and W_DISABLE2# Reference Circuit ........................................................... 50
Figure 28: WWAN_LED# Reference Circuit .............................................................................................. 51
Figure 29: WAKE_ON_WAN# Signal Reference Circuit ........................................................................... 52
Figure 31: Recommended Circuit of EM121R-GL Configuration Pins ...................................................... 55
Figure 30: Internal circuit for Active Antenna DC Bias .............................................................................. 63
Figure 33: Antenna Connectors on the EM121R-GL Module .................................................................... 65
Figure 34: EM121R-GL RF Connector Dimensions (Unit: mm) ................................................................ 66
Figure 35: EM121R-GL RF Connector Dimensions (Unit: mm) ................................................................ 66
Figure 36: Specifications of Mating Plugs Using Ø 0.81 mm Coaxial Cables ........................................... 67
Figure 37: Connection between RF Connector and Mating Plug Using Ø 0.81 mm Coaxial Cable ......... 67
Figure 38: Connection between RF Connector and Mating Plug Using Ø 1.13 mm Coaxial Cable ......... 68
Figure 39: Thermal Dissipation Area on Bottom Side of Module .............................................................. 73
Figure 40: Mechanical Dimensions of the Module (Unit: mm) ................................................................... 75
Figure 41: EM121R-GL Top View and Bottom View ................................................................................. 76