Wavecom FASTRACK M1306B Betriebsanweisung PDF herunterladen (Seite 40)

WM_PRJ_M13_UGD_001 - 001

20th July 2004

Wavecom Confidential & Proprietary Information

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7.6 RESET

7.6.1 General presentation

This signal is used to force a reset procedure by providing low level during at

least 500 µs.

This signal has to be considered as an emergency reset only

. A reset procedure

is automatically driven by an internal hardware during the power-up sequence.

This signal can also be used to provide a reset to an external device. It then

behaves as an output. If no external reset is necessary this input can be left

open, if used (emergency reset), it has to be driven by an open collector or an

open drain output:

• RESET pin 14 = 0, for Modem Reset,

• RESET pin 14 = 1, for normal mode.

Pin description

Signal Sub HD 15-Pin connector

Pin number

I/O I/O type Description

RESET 14 I/O SCHMITT Modem Reset

Additional comments on RESET:

The RESET process is activated either

by the external RESET signal or by an

internal signal (coming from a RESET generator). This automatic reset is

activated at Power-up.

The modem remains in RESET mode as long as the RESET signal is held low.

This signal should be used only for “emergency” reset

A software reset is always preferred to a hardware reset.

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Wavecom FASTRACK M1306B Betriebsanweisung Seite 40