User's Guide

SETUP AND TROUBLESHOOTING
SIM INTERFACE MULTIPLEXING
15 PROPRIETARY GM01Q-STMOD TEST KIT USER MANUAL
SEQUANS Communications
3.6 SIM Interface Multiplexing
This section describes the different SIM interfaces available to GM01Q on
GM01Q-STMOD Test Kit. These options are managed by a dedicated SIM
multiplexer
The SIM multiplexer of the GM01Q-STMOD Test Kit can be used to configure
3 different SIM cards:
• LOCAL SIM: this is the plastic SIM card slot located on the
GM01Q-STMOD board (J2 connector)
• LOCAL eSIM: Not currently supported
• HOST eSIM: Not supported
Table 3-4 describes how to configure each SIM slot with SIM multiplexer
signals SIM_SEL0 and SIM_SEL1.
Figure 3-7 represents the GM01Q-STMOD Test Kit connector to ST Discovery
board, where the SIM multiplexer signals SIM_SEL0 and SIM_SEL1 are
located (positions 8 and 18).
Figure 3-7: Connector to ST Discovery Board
Table 3-4: SIM Multiplexer Configuration Table
Selection SIM_SEL0 SIM_SEL1
LOCAL_SIM 0 0
LOCAL_eSIM (not supported) 1 0
HOST_eSIM (not supported) 0 1
No SIM Hi-Z 1 1
Rev4 Draft