2.SYSTEM CONNECTOR INTERFACE

2.10Service/Programming

Pin

Signal

Dir

Description

 

 

 

 

58

SERVICE

I

Flash programming voltage

 

 

 

 

When the SERVICE input signal is active the module will:

be reprogrammed if data is received through UART2 from a computer running Sony Ericsson reprogramming software;

or it will output logging data on UART2.

The electrical characteristics are given below. The signal reference is

DGND.

Mode

SERVICE Voltage (V)

Drive Capacity

Min.

Typ.

Max.

 

 

 

 

 

 

 

Normal Operation

 

 

0.8

-

 

 

 

 

 

Service/enable

1.9

2.75

13.6

>1mA

programming

 

 

 

 

 

 

 

 

 

2.11 Buzzer

Pin

Signal

Dir

Description

 

 

 

 

31

BUZZER

O

Buzzer output from module

 

 

 

 

Connecting the BUZZER signal to an inverting transistor-buffer followed by a piezoelectric transducer enables the module to play pre- programmed melodies or sounds.

2.12 LED

Pin

Signal

Dir

Description

 

 

 

 

33

LED

O

LED Output from module

 

 

 

 

The LED states shown below, are hard coded.

LED indication

Operational status

 

 

No indication

No power or in the OFF state

 

 

Green, steady

Power on, not connected to a network

 

 

Green, blinking

Power on, connected to a network

 

 

61

LZT 123 7263 R1C

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Image 61
Sony Ericsson GM47, GM48 manual Service/Programming, Buzzer, 12 LED, LED states shown below, are hard coded