Product Info

LTE Standard Module Series
EC25 Mini PCIe Hardware Design
EC25_Mini_PCIe_Hardware_Design 19 / 76
3 Application Interfaces
The physical connections and signal levels of EC25 Mini PCIe comply with PCI Express Mini Card
Electromechanical Specification. This chapter mainly describes the definition and application of the
following interfaces of EC25 Mini PCIe:
 Power supply
 (U)SIM interface
 USB interface
 UART interfaces
 PCM and I2C interfaces
 Control and indicator signals
 Antenna interfaces
3.1. Pin Assignment
The following figure shows the pin assignment of EC25 Mini PCIe module. The top side contains EC25
module and antenna connectors.
Figure 2: Pin Assignment