Product Info

LTE Standard Module Series
EG95 Series Hardware Design
EG95_Series_Hardware_Design
10 / 99
Figure Index
Figure 1: Functional Diagram ..................................................................................................................... 18
Figure 2: Pin Assignment (Top View) .......................................................................................................... 21
Figure 3: Sleep Mode Application via UART ............................................................................................... 30
Figure 4: Sleep Mode Application with USB Remote Wakeup ................................................................... 31
Figure 5: Sleep Mode Application with RI ................................................................................................... 32
Figure 6: Sleep Mode Application without Suspend Function .................................................................... 32
Figure 7: Power Supply Limits during Burst Transmission ......................................................................... 34
Figure 8: Star Structure of Power Supply ................................................................................................... 35
Figure 9: Reference Circuit of Power Supply ............................................................................................. 35
Figure 10: Turn on the Module by Using Driving Circuit ............................................................................. 36
Figure 11: Turn on the Module by Using Keystroke .................................................................................... 37
Figure 12: Timing of Turning on Module ..................................................................................................... 37
Figure 13: Timing of Turning off Module ..................................................................................................... 38
Figure 14: Reference Circuit of RESET_N by Using Driving Circuit .......................................................... 39
Figure 15: Reference Circuit of RESET_N by Using Button ....................................................................... 40
Figure 16: Timing of Resetting Module ....................................................................................................... 40
Figure 17: Reference Circuit of (U)SIM Interface with an 8-pin (U)SIM Card Connector ........................... 42
Figure 18: Reference Circuit of (U)SIM Interface with a 6-pin (U)SIM Card Connector ............................. 42
Figure 19: Reference Circuit of USB Interface ........................................................................................... 44
Figure 20: Reference Circuit with Translator Chip ...................................................................................... 46
Figure 21: Reference Circuit with Transistor Circuit ................................................................................... 46
Figure 22: Primary Mode Timing ................................................................................................................ 47
Figure 23: Auxiliary Mode Timing ............................................................................................................... 48
Figure 24: Reference Circuit of PCM and I2C Application with Audio Codec ............................................. 49
Figure 25: Reference Circuit of SPI Interface with Peripherals .................................................................. 50
Figure 26: Reference Circuit of Network Status Indicator........................................................................... 51
Figure 27: Reference Circuit of STATUS .................................................................................................... 51
Figure 28: Reference Circuit of USB_BOOT Interface ............................................................................... 54
Figure 29: Timing Sequence for Entering Emergency Download Mode ..................................................... 54
Figure 30: Reference Circuit of RF Antenna Interface ................................................................................ 59
Figure 31: Microstrip Design on a 2-layer PCB .......................................................................................... 59
Figure 32: Coplanar Waveguide Design on a 2-layer PCB ........................................................................ 60
Figure 33: Coplanar Waveguide Design on a 4-layer PCB (Layer 3 as Reference Ground) ..................... 60
Figure 34: Coplanar Waveguide Design on a 4-layer PCB (Layer 4 as Reference Ground) ..................... 60
Figure 35: Reference Circuit of GNSS Antenna ......................................................................................... 62
Figure 36: Dimensions of the U.FL-R-SMT Connector (Unit: mm) ............................................................. 63
Figure 37: Mechanicals of U.FL-LP Connectors ......................................................................................... 64
Figure 38: Space Factor of Mated Connector (Unit: mm) ........................................................................... 64
Figure 39: Referenced Heatsink Design (Heatsink at the Top of the Module) ............................................ 81
Figure 40: Referenced Heatsink Design (Heatsink at the Backside of Customers’ PCB) .......................... 82
Figure 41: Module Top and Side Dimensions ............................................................................................. 83