5G Module Series
RM500Q-AE&RM502Q-AE Hardware Design
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4 Application Interfaces
The physical connections and signal levels of RM500Q-AE and RM502Q-AE comply with the PCI
Express M.2 specification. This chapter mainly describes the definition and application of the following
interfaces/pins of the module:
⚫ (U)SIM interfaces
⚫ USB interface
⚫ PCIe interface
⚫ PCM interface
⚫ Control and indication interfaces
⚫ Cellular/WLAN COEX interface*
⚫ Antenna tuner control interface*
⚫ Configuration pins
4.1. (U)SIM Interface
The (U)SIM interface circuitry meets ETSI and IMT-2000 requirements. Both Class B (3.0 V) and Class C
(1.8 V) (U)SIM cards are supported.
4.1.1. Pin definition of (U)SIM
RM500Q-AE and RM502Q-AE support single (U)SIM slot.
Table 14: Pin Definition of (U)SIM Interface