參數(shù)資料
型號: Q2406
廠商: Electronic Theatre Controls, Inc.
英文描述: SELF CONTAINED E GSM/GPRS 900/1800 OR 850/1900 BI BAND MODULE
中文描述: 自成一體的位置的GSM / GPRS或850/1900畢帶模塊900/1800
文件頁數(shù): 22/81頁
文件大?。?/td> 922K
代理商: Q2406
WM_PRJ_Q2400_PTS_002 - 002
24th January 2003
confidential
Page :
22 / 81
This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged
without prior written agreement.
Ce document est la propriété exclusive de WAVECOM. Il ne peut être communiqué ou divulgué à
des tiers sans son autorisation préalable.
2.9 SIM interface
2.9.1 General Description
5 signals exist :
SIMVCC : SIM power supply.
SIMRST : reset.
SIMCLK : clock.
SIMDATA : I/O port.
SIMPRES : SIM card detect.
The SIM interface controls a 3V SIM (and a 5V SIM through an external SIM
driver). This interface is fully compliant with GSM 11.11 recommendations
concerning SIM functions.
It is recommended to add Transient Voltage Suppressor diodes on the signal
connected to the SIM socket in order to prevent any ElectroStatic Discharge.
TVS diodes with low capacitance (less than 10pF) have to be connected on
SIMCLK and SIMDATA to avoid any disturbance of the rising and falling edge.
These types of diodes are mandatory for the Full Type Approval. They shall be
placed as close as possible to the SIM socket.
The following references can be used : DALC208SC6 from ST Microelectronics.
Pin description
Signal
Pin number
I/O
I/O type
Description
SIMCLK
3
O
2X
SIM Clock
SIMRST
5
O
2X
SIM Reset
SIMDATA
7
I/O
CMOS / 3X
SIM Data
SIMVCC
9
O
SIM Power Supply
SIMPRES
50
I
CMOS
SIM Card Detect
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