Sim Interface; Sim Connection - Fibocom G510 Hardware User Manual

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3.8 SIM Interface

The SIM interface follows the GSM 11.11 and GSM 11.12 standards, which are based on the ISO/IEC

7816 standard. These standards define the electrical, signaling and protocol specifications of a GSM SIM

card.

The module does not incorporate an on-board SIM card tray for SIM placement. The SIM must be located

on the user application board, external to the G510. The module SIM interface includes all the necessary

signals, which are routed to the interface connector, for a direct and complete connection to an external

SIM.

The module supports 1.8V or 2.85V SIM card automatic. While the module turn on by POWER_ON. At

first SIM_VCC output 1.8V voltage for external SIM card communication. If it is not successful SIM_VCC

output 2.85V voltage and communicated SIM card again.

Note: If SIM_VCC is supplied, remove SIM card is prohibited. In case, it would cause damage to SIM card

and G510.

Pin No.

The following figure illustrates a typical SIM interface connection to G510. This connection type is

implemented on the module Developer Board, using an MOLEX SIM tray, PN 912283001 & 912360001.

To ensure the stability of SIM card , SIM_CD shall be pulled up whether it is used or not . SIM_DATA

signal has been pulled up to SIM_VCC inside of the modules ,but no need to pull up outside of the

modules .

G510 Hardware User Manual

Signal Name

SIM_CLK

VSIM

SIM_DATA

SIM_RST

SIM_CD

Description

Serial 3.25 MHz clock

2.85V Supply to the SIM

Serial input and output data

Active low SIM reset signal

SIM card hot-plug

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