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6 at^ssync configure sync pin, At^ssync – Siemens Brodersen MC55 AT User Manual

Page 437

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MC55_ATC_V04.00

Page 437 of 475

3/17/06

Confidential / Released

18.6

AT^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

Parameter Description

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

.

Test Command

AT^SSYNC=?

Response(s)

^SSYNC:

list of supported

s

OK

Read Command

AT^SSYNC?

Response(s)

^SSYNC:

OK

Write Command

AT^SSYNC=

Response(s)

OK

Reference(s)

PIN

ASC0 ASC1

MUX1

MUX2

MUX3 Charge

Last

SIEMENS

!

%

%

%

%

%

!

!

!

(num)