Siemens MC55 AT manual Atssync Configure Sync Pin, Atssync=?, Atssync?, SSYNCmode, ATSSYNC=mode

18.6AT^SSYNC Configure SYNC Pin

The AT^SSYNC command serves to configure the SYNC pin of the application interface. Please note that the SYNC pin may be assigned different functions: Depending on the design of the host application, the pin can either be used to indicate the current consumption in a transmit burst or to drive a status LED connected to the pin as specified in [2]. For detailed information on the SYNC pin and its LED functionality refer to [2]. Before changing the mode of the SYNC pin, carefully read the technical specifications.

Syntax

Test Command

AT^SSYNC=?

Response(s)

^SSYNC:list of supported <mode>s

OK

Read Command

AT^SSYNC?

Response(s)

^SSYNC:<mode>

OK

Write Command

AT^SSYNC=<mode>

Response(s)

OK

Reference(s)

SIEMENS

PIN ASC0 ASC1 MUX1 MUX2 MUX3 Charge  Last

! % % % % % ! ! !

Parameter Description

<mode>(num)

Operation mode of the SYNC pin. Setting is stored non-volatile.

0(D)	SYNC mode:
	Enables the SYNC pin to indicate growing power consumption during a trans-
	mit burst. You can make use of the signal generated by the SYNC pin, if power
	consumption is your concern. To do so, ensure that your application is capable
	of processing the signal. Your platform design must be such that the incoming
	signal causes other components to draw less current. In short, this allows your
	application to accommodate current drain and thus, supply sufficient current to
	the GSM engine if required.
1	LED mode:
	Enables the SYNC pin to drive a status LED installed in your application

according to the specifications provided in [2].

The coding of the LED is described in Section 18.6.1, ME status indicated by status LED patterns.

MC55_ATC_V04.00	Page 437 of 475	3/17/06
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