Xircom An Intel Company GEM3501 Manual De Usuario

Core Engine GSM/GPRS Modem Developer Guide Preliminary Draft: 7/6/2001

Part Number: 07100026, Revision: 002

Confidential

© 2001 Xircom, Inc., an Intel company All rights reserved.
All trademarks and copyrights are the property of Xircom, Inc., an Intel company

5.2.1.3 “RF DISABLED” Mode

The RF DISABLED mode is characterized as follows:

AT+CFUN=4

The Core Engine is not attached to the network.

The RF section of Core Engine is powered down.

Limited functionality is available with the digital section (AT changes, phone book
entries, etc. are possible).

The SLEEP signal on the Core Engine I/O interface is Low.

Will transition to READY mode when the WAKEP_UP signal on the Core Engine I/O
interface is asserted.

5.2.1.4 “SLEEP” Mode

The SLEEP mode is characterized as follows:

AT+CFUN=0

The Core Engine is not attached to the network.

Reduced clock speed.

Minimal digital functionality.

The SLEEP signal on the Core Engine I/O interface is Low.

Will transition to READY mode when the WAKEP_UP signal on the Core Engine I/O
interface is asserted.

Will transition to READY mode when an “AT+CFUN=1” command is received.

Minimal power draw.

5.2.1.5 “DORMANT” Mode

The DORMANT mode is characterized as follows:

AT+CPWROFF

The Core Engine is not attached to the network.

The RF section of Core Engine is disabled.

The baseband section of Core Engine is stopped.

AT command interface is disabled.

The SLEEP signal on the Core Engine I/O interface is Low.

Will transition to READY mode when the WAKEP_UP signal on the Core Engine I/O
interface is asserted.

Will transition to READY mode when the RESET_B signal on the Core Engine I/O
interface is asserted.

Will transition to READY mode when a hardware reset (cycle power) is performed.